BULLS Monster E S Review

Bulls Monster E S Electric Bike Review
Bulls Monster E S
Bulls Monster E S Alloy Skid Plate Motor Protector
Bulls Monster E S Bosch Powerpack 400 Removable Battery
Bulls Monster E S Bosch Intuvia Display Panel
Bulls Monster E S Schwalbe Jumbo Jim 4 Inch Tires
Bulls Monster E S Rock Shox Bluto Rl Solo Fat Tire Suspension Fork
Bulls Monster E S 11 Speed Shimano Deore Xt
Bulls Monster E S Shimano Ice Technologies Disc Brake Rotors
Bulls Monster E S Bosch Performance Cx Motor
Bulls Monster E S Electric Bike Review
Bulls Monster E S
Bulls Monster E S Alloy Skid Plate Motor Protector
Bulls Monster E S Bosch Powerpack 400 Removable Battery
Bulls Monster E S Bosch Intuvia Display Panel
Bulls Monster E S Schwalbe Jumbo Jim 4 Inch Tires
Bulls Monster E S Rock Shox Bluto Rl Solo Fat Tire Suspension Fork
Bulls Monster E S 11 Speed Shimano Deore Xt
Bulls Monster E S Shimano Ice Technologies Disc Brake Rotors
Bulls Monster E S Bosch Performance Cx Motor


  • Premium hardtail electric fat bike with all the fixins, highlights include rear rack bosses, tubeless-ready tires and punched out rims, RockShox air fork with remote lockout and high torque Bosch CX motor
  • Quality 180 mm hydraulic disc brakes from Shimano for excellent stopping power and modulation, impressive light weight for such a large electric bike at ~52.5 lbs, quick release rear wheel and removable battery to reduce further
  • Available in two frame sizes for improved rider fit, angled top tube lowers stand over height but classic diamond frame is still stiff, strong and compatible with many hang-style racks (especially with the battery off)
  • Would be nice if the front wheel was also quick release but the 15 mm thru axle is nice for improved handling and strength, no throttle mode for help managing those precarious moments in deep sand or snow but that keeps it Class 1

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Video Review

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Monster E S



Body Position:


Suggested Use:

Trail, Sand and Snow

Electric Bike Class:

Pedal Assist (Class 1)
Learn more about Ebike classes


2 Years Motor and Battery, 5 Years Frame


Europe, Canada, United States, Australia, New Zealand

Model Year:


Bicycle Details

Total Weight:

52.5 lbs (23.81 kg)

Battery Weight:

5.2 lbs (2.35 kg)

Motor Weight:

8.8 lbs (3.99 kg)

Frame Material:

7005 Aluminium

Frame Sizes:

18.11 in (45.99 cm)20.07 in (50.97 cm)

Frame Types:


Frame Colors:

Matte Black with Matte Grey and Neon Green Accents

Frame Fork Details:

Rock Shox Bluto RL Solo Air, 100 mm Remote Lockout, 15 mm Thru Axle

Frame Rear Details:

11 mm Quick Release Skewer

Attachment Points:

Rear Rack Bosses

Gearing Details:

11 Speed 1x11 Shimano Deore XT, 11-40

Shifter Details:

Shimano XT Triggers on Right


FSA CK-760/IS Cranks, 15T Chainring


Wellgo Alloy Platform, Cage Style


Tapered 1 1/8"


7° Rise (80 mm, 90 mm)


Low Rise, 720 mm, 25 mm Rise, 9° Bend

Brake Details:

Shimano M615 Hydraulic Disc with 180 mm Shimano XT Rotors


Flat Rubber


Selle Royale M1

Seat Post:


Seat Post Length:

300 mm

Seat Post Diameter:

30.9 mm


Alloy, Punched Out Square Holes, 32 Hole


Stainless Steel, 13 Gauge, Black

Tire Brand:

Schwalbe Jumbo Jim, 26" x 4"

Wheel Sizes:

26 in (66.04cm)

Tire Details:

Snakeskin, Tubeless Easy

Tube Details:

Presta Valve


Large Slap Guard


Aluminum Skid Plate, Locking Removable Battery Pack

Electronic Details

Motor Brand:

Bosch Performance Line CX, Gen 2

Motor Type:

Mid-Mounted Geared Motor
Learn more about Ebike motors

Motor Nominal Output:

350 watts

Motor Torque:

75 Newton meters

Battery Brand:


Battery Voltage:

36 volts

Battery Amp Hours:

11 ah

Battery Watt Hours:

396 wh

Battery Chemistry:


Charge Time:

3.6 hours

Estimated Min Range:

35 miles (56 km)

Estimated Max Range:

85 miles (137 km)

Display Type:

Intuvia, Removable, Adjustable Angle, Grayscale, Backlit LCD


Speed, Assist Level (Eco, Tour, Sport, Turbo), Battery Level (1-5), Odometer, Trip Distance, Estimated Range, Clock, Max Speed, Average Speed, Trip Time, Shift Assist Recommendation

Display Accessories:

Independent Button Pad with Tactile Feedback on Left, 6 Volt Micro USB Port on Display

Drive Mode:

Advanced Pedal Assist (Measures Wheel Speed, Pedal Cadence and Pedal Torque, Power Output Relative to Pedal Input: Eco 50%, Tour 120%, Sport 190%, Turbo 275%)

Top Speed:

20 mph (32 kph)

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Written Review

Fat tire electric bikes have grown in popularity over the past few years and mainstream brands have taken note. At least one major company introduced a mid-drive powered fat bike with front suspension during the 2015 / 2016 season but the Bulls Monster E S is the only model I’m aware of that’s powered by Bosch and available in the US. This ebike uses the CX variant of the second generation Bosch Centerdrive which offers more torque, a faster response time and a nicer interface than the other system I’ve tested… some of this is my opinion of course but features like display removability, integrated Micro USB charging and forward compatibility with larger batteries (namely the new Bosch Powerpack 500) make it a standout against Yamaha, Brose and Impulse. This performance however, is reflected in the price.

The Monster ES costs ~$4,300 which stings for many mainstream consumers but to be honest, I think it’s priced well. You get a near complete upgrade on all of the components, two frame size options, a two year comprehensive warranty and a fat bike that’s relatively light weight made from high grade Aluminum alloy. My favorite part is the rack interface at the rear, there are four threaded eyelets for adding a cargo rack which transforms this beast into a “go anywhere” commuter. Sand, snow, rain or shine won’t stop this bike and weather / terrain aside… larger riders might feel that the aesthetic suits their presence and build more than smaller bikes. I love that the bright accents aren’t overdone but that the bike offers some color and fun. It’s a cool looking bike with a battery and motor that match the color scheme and are mounted in a way that sort of blends with the frame and tires. There’s also a tough aluminum skid plat bolted to the bottom of the motor, protecting it from rocks and other obstacles you might encounter on adventurous rides.

Perhaps my only gripes with this electric fat bike, aside from the price tag, are the lack of quick release on the front wheel, basic rubber grips that don’t lock and the limited availability at dealers right now. Bulls is relatively new to the US market and while they’ve expanded into roughly 20 dealers at the time of this review, it’s not a bike that everyone is going to be able to find locally and take out for a test ride. Take note however, brands like Bosch only partner with companies they trust and Bulls has been accepted in Europe and parts of Asia, selling ebikes for several years now. Some of the premium parts used on this model include Shimano hydraulic disc brakes (both large 180 mm) with ICE Technology rotors meant to dissipate heat, an 11 speed Shimano Deore XT drivetrain and RockShox Bluto air suspension fork with remote lockout. A couple of areas I think could be improved by Bosch include adding a battery percentage readout on their display and perhaps higher power output on the USB port built into the display so that phones and some other portable electronic devices could be charged and not just maintained when plugged in.

Overall, it’s a bike that gets the job done with instantaneous feedback from pedal assist that measures wheel speed, pedal cadence and pedal torque 100 times per second. The chainring is extra small with just 15 teeth for improved torque and climbing power. The motor spins that chainring roughly twice as fast as the cranks rotate and this produces a natural feel while pedaling while empowering to motor to operate efficiently. It starts and stops super fast but there is a bit of an electronic whine or whir produced when pedaling at higher RPM. It’s something you see (or hear) with all of the current Bosch e-bikes. In optimal conditions (flat pavement with a ~160 lb rider using Eco mode) you should be able to reach up to 60 miles per charge with the standard 400 watt hour pack or you can pay more for the newer 500 watt hour and go ~25% further. Both batteries look the same and are removable to reduce frame weight if you’re transporting the bike. I do appreciate the traditional, stiff triangular frame (which hangs on many car racks easily) but it presents a higher stand-over height so it’s cool that the top tube is angled down to take that into account and shave off an inch or two for people with shorter legs. Cables and electrical wires are all internally routed for protection and a nicer look as you see with more expensive models.

I took the bike into sand (both soft and firm) and it performed well when I let some air out of the tires. Again, these are higher-end Schwalbe tires with a layer of puncture protection and the ability to be run tubeless to reduce weight. So the bike stood up to the challenges of riding in sand but it did kick some up onto my legs a bit (no fenders), the 100 mm air fork suspension took the edge off of the bumpy parts and I was able to steer alright. It’s amazing how much help you’re getting from an electric assist bike… having ridden bikes like this without power on sand, it’s nearly impossible. The only question mark in truly rigorous terrain like this is the lack of throttle because there are times when it’s nice to just get help starting from rest or power through a difficult section without worrying about shifting gears. Most mid-drive electric bicycles just don’t offer throttle mode. This is a Class 1 electric bike that will be legal in more locations (like mountain bike trails) but without the throttle there’s a bit more balancing and work to be done. Rest assured however, it’s very possible and quite enjoyable. Another consideration with fat bikes is that if you’re spending this kind of money for a bike and then actually ride it near the ocean with salt water there may be corrosion and rust happening, especially if you don’t rinse it immediately after each ride. I wrote a guide about this here and included some pictures and feedback from a hardcore rider in Europe who uses a Bosch powered bike. So the way I’d approach this thing is as a weekend warrior where there’s a rack for hauling, a good drive system delivering excellent climbing and range, a nice suspension setup and fun off-road capable tires that could be enjoyed on the weekends and taken care of on those special beach or salty snow days. It’s just something I’d baby a little because it’s so capable and can really last if you do. Big thanks to Bulls for partnering with me for this review.


  • Robust drive system with additional protective metal paneling below the motor, offers 75 Newton meters of peak torque output for excellent climbing or slogging (the Bosch CX offers 15 more Nm than the standard Bosch Performance line)
  • In addition to the metal push guard, there’s an oversized alloy chain guard protecting the chainring and keeping your chain from bouncing off on bumpy terrain, an extra-large rubber slap guard protecting the chainstay and I like that you get metal pedals but would probably upgrade from the cages to a Wellgo platform like this for increased surface area and traction
  • Name brand tires from Schwalbe, the Jumbo Jim model offers “Snakeskin” puncture protection and can be run tubeless for decreased weight and improved low-pressure performance, the punched out rims reduce weight and look cool
  • Awesome suspension setup… you get a RockShox Bluto air fork with remote lockout, 100 millimeters of travel performance and a 15 mm thru-axle for strength
  • Great utility potential with this bike given the seat stay bosses so you could add a rack and fit a trunk bag or panniers, make sure to get a fat bike rack that is disc brake ready like this
  • The bike is available in two frame sizes for improved fit whether you’re tall or short, the top tube is angled down for lowered standover height, reinforced seat tube bumps up for strength and would work well with a 30.9 mm thudbuster to improve comfort (long or short travel would work), nice name brand Selle Royal saddle that’s color matched to the bike
  • Motor and battery weight are kept low and center for improved handling and I love that the controller provides shift sensing feedback to spare the chain and sprockets if you’re shifting under load (extra important off-road or in soft environments with hard pedaling, especially given that this bike has 11 speeds)
  • The battery can be charged on or off the frame and I like how it blends in with the black frame and is designed into the downtube with a little cup at the bottom, the Bosch system is forward compatible with the new 500 watt hour pack but comes with the 400 watt pack standard here
  • I was really impressed by the weight of this bike at ~52.5 lbs, yes I was on the smaller frame size but that’s still good for a fat-ebike and I attribute it to the nicer components, premium frame and air fork
  • The price point also wowed me considering the nicer components and solid two year warranty (with five on the frame) at ~$4,300 it’s a very complete package including 180 mm hydraulic disc brakes with XT rotors from Shimano
  • The Bosch Intuvia display panel is intuitive to use, large and easy to read, backlit for use at night, it includes a Micro USB charging port on the right side for maintaining a phone or charging a headlight (or other portable electronic device) and it’s completely removable! I love that there’s also a button pad break out box positioned near the left grip for adjusting power and readouts on the fly without taking your hand off



  • The Bosch Centerdrive is one of my favorite ebike motor systems because it’s efficient and durable but it does not offer a throttle mode (that keeps the bike a Class 1 here), the downside is that sometimes on snow and sand it’s nice to have extra help when you can’t pedal easily (something a Class 2 would offer)
  • No bottle cage bosses on the seat tube… it looks like there might be room but given the up-release battery design that Bosch offers maybe it would be a tight fit, at least you have the option for adding a rack
  • No quick release on the front wheel… just the back, that makes transporting and flat fixes a bit more time consuming
  • Given the larger, heavier wheels and tires used on this and most fat bikes, I was surprised that the rear wheel wasn’t using a 12 mm thru-axle… just a standard 11 mm skewer
  • The grips work alright but aren’t locking so they can spin easier if you really bear down or get them wet or hot riding, cheap to upgrade but given the price of this bike kind of a low point
  • One area I really feel like the Bosch system could be improved is with the display panel because it only shows five battery bars vs. an actual percentage estimate (or more bars), there’s a big difference between 20% remaining and empty when you’ve got a bike this big to haul back home
  • The second generation Bosch mid-drive (that the CX is built on) produces a distinct whine because the sprocket spins at about 2x pedal rotation… this makes it super responsive but that noise is more noticeable than the Brose and some Impulse 2 motors (or even Yamaha)


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2 weeks ago

Oh the 35 mm stem takes a few miles to get used to once your comfortable with the stock stem.
But the bike is so much more agile and feels 10lbs lighter with the short stem.
Also really helps on chunky drops the bike pushes through better. 180 berms the bike is much faster and more balanced, square edge drops the bike floats off and you don’t feel the need to rub you butt on rear tire to keep the front from dropping out on you.
The company i ride with are very accomplished riders on Evil wreckoning and Santa Cruz. High tower LT.
both 9k plus builds and when the trail is chunky, steep and fast the Fs3 gives them all they can handle and when it gets chattery machine gun arm rough the 50lbs monster shines and they can’t match the speed.
18 KOM on strava now with the Fs3 on lagit enduro trails that put a pucker factor on most seasoned of riders.
I went from hating this bike stock and took it back to bike shop asked them to sell it because there was no data available to set it up. To completely blown away and it was less then 400 invested in mods.
Dropper seat, 35mm riser bars, grid tires, 35mm stem, 160mm air rod, 203mm rotors, 1 air token front, 3 shock tokens rear.
The monarch rear shock is the biggest limit and keeps big air out of this bikes comfort Zone, But i take this bike on any chair lift DH run and feel solid.

Mark Stonich
1 month ago

Thanks for your answer. She had a motorcycle accident when younger. Things were actually fine until last year when she slipped on an ice patch and broke her knee cap. That's when the knee problems started to come back. There's a loss of strength accompanied by pain when putting too much pressure on the knee. Walking is not a problem, but carrying heavy loads is no longer possible. Not sure of all the details, as it's a friend's wife. I offered to help put the bike/kit together as they're both over 75.

In a lot of cases the apparent lack of strength isn't that the muscle isn't strong, but pain prevents you from applying full tension with it. Reducing the bend in the knee with short cranks and spinning freely (easier with shorties) often helps. That she has no trouble walking, where the knee isn't loaded while bent, suggests that reducing the bend MAY help. She should run this past her Ortho and PT to get their opinion.

If she's a candidate for knee replacement, everyone I know who's had one, including my wife, says they should have done it sooner. 7 weeks after Jane's TKR she was climbing much better than before. And she rode 9 miles the day before her surgery. But after replacement, a lot of people lose range of motion and still need shorties. I've sold at least 100 sets 100mm or shorter to adults. Many to people with knee replacements whose PT wasn't aggressive enough.

If you want to have them contact me I can help them determine if short cranks are likely to help. I have all the work I want/need and would have retired years ago if there was someone else, anywhere on the planet, doing the work. So if her situation doesn't warrant shorties, I won't try to talk them into anything to try to make a sale. If nothing else, I can offer her some strategies for biking with bad knees. And Jane can share her experience with the Copenhagen Wheel.

Mark Stonich; BikeSmith Design & Fabrication
5349 Elliot Ave S. Minneapolis, MN 55417 USA
Ph. (612) 710-9593 http://bikesmithdesign.com
https://www.flickr.com/photos/bikesmith/ (Mostly Wildlife)

Recommended reading;
Crank Length, Leg Length and Power
Short Women / Short Crank Feedback
Range of Motion Limitations & Crank Length

In case they worry that short cranks will cost her power;

I recently got a phone call from an average sized adult mountain biker who says he's climbing familiar hills 1 or 2 gears higher on 135s than he'd used with 175s before he messed his knee up. He was just hoping shorties would let him ride again. Now he wants to get back into racing. He’s in Big Bear Lake California where the “Hills” are mountains.

A local Gravel Road racer is 6'-2” (188cm) and after much trial and error finds he is fastest on 135s despite having no RoM or other issues.

Another 6’2” gent in Texas competes in long distance Brevets on 95mm cranks due to severe range of motion limits. Another man with range of motion limits is climbing the hills of San Francisco with a single 38t chainring and a 12-25 cassette, also on 95s. The fellow in San Francisco bends pedal spindles. I just heard from another gent who does the grueling 200 mile Seattle to Portland on 95s.

One of my customers, 5'-7" (170cm) tall professional triathlete Courtney Ogden, won the big money 2011 Western Australia Ironman on 145s. He's done extensive work with the people at PowerCranks where they are becoming big advocates of shorter cranks.

A few years ago a team of 4 Australian MTB racers, ranging in height from 5'10 to 6"1 won a 24 hour MTB race on 125s. With the shorter cranks they rarely had to stand. conserving energy. And they were able to get by with a single chainring, before today’s monster cassettes, because the useful RPM range is so wide with shorties. Many customers have reported that they notice themselves needing to shift much less often.

This from a serious roadie with severe range of motion limitations;
"I’m 5’8” 168lbs – regarding strength, I’m not the strongest. However, I’m not the last up the hills and can do more than my fair share on the front of the group. The 115mm Andels you made for me still have no issues what so ever, I’m on my second set of rings! Please send me another set of 115s for my new bike.”
Knee Friendly Pedaling

Riders usually push down on the pedals by using their quads to straighten the knee joint. First pushing the pedal forward, then down. There is always going to be a bit of this going on but you can do a lot to reduce the loads on your knees.

Try concentrating on using your glutes and hip flexors to swing your knees up and down. Relax your quads and just let everything below the knee act as a connecting rod between the knees and pedals. At the bottom of the pedal stroke use your hamstrings just a little bit to pull your foot back as though you were scraping mud off your shoe. Don't consciously push forward at the top of the circle. That's when knees are most bent and the tissues around them are most vulnerable.

If you aren't clipped into the pedals, and most of the time even if you are, you don't pull up on the pedal. But the idea of using the hip flexors to lift the knee is to reduce the amount of work done by the front foot that is wasted by raising the weight of the other leg and foot. If you aren't clipped into your pedals you don't want to completely unweight the upward foot. Some contact is needed to keep it located on the pedal. A grippy pedal like a spiky MTB platform or the MKS Grip King (AKA Lambda) makes this easier.

Pedalling on the mid-foot instead of the ball of the foot reduces stress on the knee. And testing has shown that it increases endurance, at a slight cost in peak power. However, be careful to avoid toe/tire interference.

If you do this while spinning freely, in low gears, you won't have to apply much force with any single muscle group. If you aren't comfortable spinning, your cranks are probably too long. 21-21.6% of inseam is best for healthy, non-triathlets, without joint issues. When a person is uncomfortable at higher RPM it isn't due to the muscles switching from extension to contraction more often. It is because their muscles are extending and contracting at a speed that is too fast for them. This recruits more fast twitch muscles, which produce more heat and lactic acid. Shortcranks reduce this speed by moving the muscles a shorter distance per revolution. Allowing more use of slow twitch fibers for a higher comfortable cadence.

Your quads will still end up doing much of the work. But easing some of the tension pulling your patella down onto the joint can make a big difference. When I get a twinge in my knee, it reminds me to concentrate on my pedaling and I actually accelerate.

BTW I read about this type of pedaling years ago, as a way to help you spin better. So it has a double benefit.

For eBike types, think of more efficient pedaling as a way to lessen drain on your batteries. ;)

2 months ago

... is not helped by the sale of monster ebikes (like the Luna Apex) which push the limits of ebike legality with top speeds of over 40 mph...

I recall visiting a small LBS when I first started my e-bike search (I think they were a Felt dealer). They told me basically "we don't sell any purpose built e-bikes but we can build you a kit and the bike will do 40 mph easy". When I responded "that isn't going to be legal" I got a surprised look in return. I took it to mean surprise that anyone even cared about legality. Just seems highly irresponsible for a shop to jeopardize the future of an industry via complete disregard for current law, rider and bystander safety etc. So with all these throttle and perhaps 28mph+ delivery bikes in NYC, I'm thinking that there have to be a lot of shops building/selling these things(?). If so, are they garage/black market operations or licensed bike shops? Seems NYC should crack down on some of the sellers and in the process help the legit shops like Propel via the increased Class 1 sales.

2 months ago

The enforcement actions came up due to a caller to the "Ask the Mayor" program hosted by Brian Lehrer on WNYC. An Upper West Side resident called in to ask Mayor DeBlasio why the regulations regarding e-bikes was not being enforced, which was a follow up to a news piece earlier in the week also on WNYC. The caller's position is that ebikes are a growing problem, threatening pedestrians, particularly older people. The issue seemed to be primarily throttle ebikes being used for restaurant take out deliveries, which is a common sight in NYC. The mayor gave the caller a positive response, with a promise to follow up, the result being the increased enforcement actions. Chris Nolte, who is frequently on this site, has been outspoken in the media about the enforcement issue, which I interpret as being being caused by reckless abuse by delivery restaurants. Its seems all ebikes (and ordinary non commercial riders) are now being caught in the net, even category 1 bikes. Just my opinion, the situation is not helped by the sale of monster ebikes (like the Luna Apex) which push the limits of ebike legality with top speeds of over 40 mph. One other result is this is causing the dumbing down of some otherwise very capable ebikes to avoid falling into category 2/3. Specifically, I am guessing that Haibike disables its walk assist to avoid any risk of this being considered a throttle, thus falling into an illegal category is some jurisdictions.

2 months ago

I own both mid-drive and hub drive (geared), although these are kit motors. I also went to a Bike Expo and test rode a bunch of commercial e-bikes, some quite sophisticated and others probably worse than my home kits due to sloppy setup/maintenance. As long as the hub motor is reasonably light, I couldn't see much difference in handling, whether front wheel or rear wheel, for riding about town. I couldn't detect much power robbing cogging in the Evelo and Stromer direct drives. At 16 mph, all seemed to have enough power for me. Got to see what torque sensing felt too. Bottom line, all ebikes are fun on a demo day.

No single solution here. The Winnebago poster should tell us how he plans to use his bikes. I thought he was going to have a 40 foot monster, but the Revel isn't big . I would want a strong platform rack on a 2" hitch. A pair of fat tired 20" bikes for easier carrying, although they are heavy. Two monster fat bikes? A pair of mid drive mountain bikes. Light street bikes if he never goes into the woods? Range, ease of pedaling (if desired) and comfort matter first, along with price. Given a choice between throttle/pedal to 20 mph or pedal only to 28 mph, I would pick the throttle.

Mid drive who ride 25 mph on throttle only (although you can't buy this bike) report high gear/chain wear. I never take mine past 18 mph, and it's old bike with already worn gear/chain. They haven't gotten worse, although I put on a new chain this summer. I see posts from road bikers who do ride that fast on legs alone, and their chains don't last either. I think we can ignore this issue for mid drive.

I also figure we aren't supposed to ride up hills that we couldn't pedal in the lowest gear, but owners try to do this with a motor in the highest gear and smoke the notors Use the gears, go slow, and I think a 500W motor will do the job.

Craig Crowder
3 months ago

Just returned from 10 days mountain biking in NC with new MTBE upgrade. I really like it. I put it in mtbe mode and leave it there. It is much smoother than manually shifting the boost level. It also reduces the need to shift gears as the torque changes via mtbe accomplish the same result. I have a Bulls Monster EFS and still don't have walk assist capability. I see from an earlier post from a Bulls owner that it works, so wonder what I am doing wrong. Suggestions?

How to enable walk assist; 1) Select a speed (Eco,tour,sport/emtb,turbo). 2) press the walk assist button. 3) within 2 seconds of pressing the walk button press the + button and the bike will start walking. Let me know if that works for you :)

3 months ago

Just wondering if anyone has found a kickstand that works with a full suspension ebike. I have a Monster E FS.

3 months ago

I think this is a super interesting question. I know of a guy who built up a bike himself and can do a hilly 100-mile ride (at speeds much slower than 25 mph, though), so anything is possible. Supposedly the high-end Stromer can also go 100 miles on a charge.

My view is that with a good ebike, you could probably do your 50 miles at an average speed of close to 20 mph using two batteries. Keep in mind that an extra battery can be around $1000. That assumes you can currently do this ride on your Trek at an average speed around 14-15 mph. @Energetic James - is that about right?

Here are some data points in case it's helpful:

BACKGROUND: I'm a fairly fit recreational cyclist in my 40s. I will routinely ride the local hills (Bay Area) and average ~100 ft/mile. I'm riding a $4500 Specialized Turbo X (nice hub-drive bike with a 250W nominal motor and a 562WH battery). You could certainly beat these specs, but I like the warranty and dealer service that comes with buying a major brand from a shop.

HIGH SPEED: Flat 18-mile commute (sometimes windy; mix of dirt and pavement; very few lights): I can average about 21-22 mph (feels like I'm mostly cruising at 24-26 mph) and it will use 65-80% of my battery. Expect a range of 20-25 miles per battery.

LOWER SPEED: Hilly ride: 32 miles; 3800 ft of climbing averaging 19.4 mph used my entire battery (and I used regen on the downhills). Assuming you are at least as fit as I am, this would mean you could definitely do your commute on two batteries.

Bottom line is that I don't think 25 mph is doable without a monster motor and a huge battery capacity. But 19 mph? Definitely. And we're still talking about at least an hour quicker than riding your Trek.

Let us know what you're thinking. This would be a significant investment for you, but I think you'd love being able to do it!

3 months ago

Just returned from 10 days mountain biking in NC with new MTBE upgrade. I really like it. I put it in mtbe mode and leave it there. It is much smoother than manually shifting the boost level. It also reduces the need to shift gears as the torque changes via mtbe accomplish the same result. I have a Bulls Monster EFS and still don't have walk assist capability. I see from an earlier post from a Bulls owner that it works, so wonder what I am doing wrong. Suggestions?
Also, has anyone changed out the Intuvia for the Purion? If so, does the plug in the motor have a catch that has to be released, or do you just pull it out? The Intuvia is exposed to crashes and the plastic wedges holding it on will shear, disabling the bike. I zip tied it back on until I can switch to the Purion which I can mount so it is not as exposed.

Brooklyn Tony
4 months ago

Thanks. I just wanted this bike but it wasn't meant to be I guess.

Fret not! Here's a couple of other fat tire options from low to high pricepoints:
Sondors Original, X, Fold, and Fold X,
Voltbike Yukon, and Mariner,
RadPower Rad Rover and Rad mini,
Pedego trail tracker
Luna cycles homebrewed stuff
iZip E3 Sumo
Emotion Big Bud
Bulls Monster

5 months ago

Except for one store bought electric beach cruiser, all my other ebikes are regular bikes with motor added. Weights range from 34 to 54 pounds w/o battery. We live in flat Illinois, and I have no problem pedalling any of these at 12-14 mph w/o power. Also have ridden a few other commercial ebikes, 50 pounders, and they're about the same.

We took two of those bikes to Colorado this week. Wow. What they call a mild hill (300 feet) is a monster to me, especially at 9000 feet. I could do it w/o power, but it sure was work. So it's all subjective. Best advice is to tes tride the ebike that interests you.

I use a Swagman XTC2 platform rack. Didn't realize it's rated for two 35 pound bikes. I have one 35 pound bike and a 45 pound bike sitting on it right now. Pulled off batteries and seats to get the weights down. Added 20 pounds of chain though. Driven 2045 miles so far. Another 700 miles and I'll be home tomorrow! My car is a VW with only a 1 1/4 hitch. Wish I still had my old SUV with its 2" hitch.

5 months ago

That chain is a monster, right? got the same at Mec as well. Best ratio quality/price in my opinion for Canada.

I like that store, good stuff and decent prices for several items. You often have a better selection online for home delivery though.

Tip to save on shipping costs: if you want to buy something online that is not in your local store that would require shipping costs, drop by the store and have them order it for you = free shipping :)

How do you like the seat? looks very comfy, like a lazy-boy for bikes

Edit: i have been fiddling around with the bolt inside the post, yes. It is at its loosest right now and it does not give. Sometimes it's the opposite, too much bounce. I find that loosening the cap at the top of the tube, right under the rubber springy cover does have quite an effect sometimes. I just can't get it to be relatively cushy/springy permanently. Once I get it cushy, after a few rides, it becomes stiff again. There is plenty of grease inside, I dismantled it twice already.
That chain feels like someone is hitching a ride on the back rack, hopefully it will give the would be thief way too much hassle and he`ll keep on walking instead of riding with our bikes away.
@america94 perhaps the top part is binding once you tighten the inner bolt? or it just gets tired and keeps on taking extra long siesta...hope you get it sorted out before the rest of us start having same symptoms.
The new seat did help but i still feel the discomfort, it must be all those years of being lazy or away from riding a bike has came back to hunt me and i just have to pay my dues. Still i like it much better than the original besides it matches the rest of the bikes color scheme.

5 months ago

Sorry to hear that was a complete waste of your time @america94 , perhaps it works better for me since i replaced the original saddle and i`m a short and chubby fella? Have you tried adjusting the bolt inside the seat post?
Just came back from MEC with more goodies, got this chain lock and this cable to help with security. Also got a new pair of KEEN shoes, now just waiting for the rain to stop so i can test them out. Now my shopping list is complete, o wait still got to get a bike stand , darn it.....so close.
That chain is a monster, right? got the same at Mec as well. Best ratio quality/price in my opinion for Canada.

I like that store, good stuff and decent prices for several items. You often have a better selection online for home delivery though.

Tip to save on shipping costs: if you want to buy something online that is not in your local store that would require shipping costs, drop by the store and have them order it for you = free shipping :)

How do you like the seat? looks very comfy, like a lazy-boy for bikes

Edit: i have been fiddling around with the bolt inside the post, yes. It is at its loosest right now and it does not give. Sometimes it's the opposite, too much bounce. I find that loosening the cap at the top of the tube, right under the rubber springy cover does have quite an effect sometimes. I just can't get it to be relatively cushy/springy permanently. Once I get it cushy, after a few rides, it becomes stiff again. There is plenty of grease inside, I dismantled it twice already.

6 months ago

E-boy , that's an interesting question. I own one, and it's a great bike, so far. I looked at Haibike as THE premium brand. Prices from $2500- 15,000+ puts it in the "BMW" category as far as I'm concerned. That said, I've yet to need warrantee service, replacement parts or factory accessories, so I don't know what to think as a company. I can also say I was NOT prepared to pay full retail for the bike. I can afford 5k for a bike, but I cannot justify the expense. For example: I would love to have a Bulls Monster fs fatty, But there is no freaking way I'm dropping $5,300+shipping and taxes for one , no matter how cool it is. I'm sure that I'm not the only one who feels this way and I'm also sure this is an industry stumbling block bringing new riders to the ebike family.

Joaquin V
6 months ago

Thanks! Got it insured now ;) I was wondering: how tight should I feel the breaks? In a regular bike going at full speed I could break to a full stop in 3,5s. When I'm on this monster, it feels like eternity to stop. Perhaps the breaks are a little loose. Any feedback on this?

Mr. Coffee
6 months ago

@Barkme Wolf - Our family have the Pocket Rocket stoves and like them. We also have a couple of 25 year old Scorpion that still work well but have a hose between stove and gas, so not as convenient although quite small.

Canister stoves are awesome, especially if you are in the boil-water-and-stir school of outdoor cooking.

There are lots of great models out there. I like the ones with a sparker so you don't need to keep track of a lighter or matches.

I've had this little monster for sixteen years (the stove, not the canister):

7 months ago

Kudos on the S-Works and Expert. I've had the FSR COMP for about a month now. It's monster green....had to get it due to heart issues. Started out using trail-mode about 90% of the time. Since then, I've gained strength from biking so much and now I use eco-mode about 90% of the time. I have trouble quitting before it gets dark because I'm having so much fun. I'm totally sold on 3 inch tires, they're icing on the cake.

7 months ago

I'm at a state park in pa. I have a bulls monster e fs class one. I was just told by the grounds keeper no motorized vehicles in state parks. Im at Swatara state park in pa. I thought class one bikes were considered regular mountain bikes. Can someone help? Thanks

8 months ago

FXR3, my buddy just picked up a 17 Bulls Monster FS from a LBS at a $200 over preminum, we do support the local economy, but not blindly. The other purchases, they weren't even in the same zip code with pricing, about $800 off. BULLS should contract out to VELOfix or during DEMO Days, have their techs work on customer's bikes. I know Intense Bikes do routine services on ALL Intense bikes during Demo Days, BULLS can do the same.

8 months ago

We just got a 2017 Monster FS with the BOSCH, pick this instead of the Haibike, the Haibike Fat Bike is only made in Yamaha. The 2017 comes with a 500watt pack, basically the same bike as the 16, but with 20% more juice. The suspension is dialed in, super fast on DH, compare to my Haibike Fat Six and Specialized Fat Boy, this bike rocks going up, and super fun coming down. Top notch component group... Buy It!!!!

8 months ago

I received a call today from BULLS today, apparently, they had an emergency meeting to discuss this issue, they are very concern on providing the BEST customer service in the industry. Barney called me right after the meeting, and informed me that BULLS had changed their policy with firmware updates. According the Barney, the limited access was due to insurance and liability issue, they are hoping to resolve this matter ASAP. Barney spoke with me at length and reassured me that I will get the firmware update needed at NO cost.

Stay tuned, I am keeping my fingers crossed! I have a few friends that are in the market to buy new E-bikes, they are on hold to see if BULLS comes thru. I have another friend that picked up 2017 Bulls Monster FS, the quality on Bosch Bike is impeccable, we compared it to a 2016 Haibike Fat Six, the BULLS definitely has a better component group, the welding is top notch. I think their product is superior to Haibike, just need to fix their LBS issues.

Customer Service in this emerging market is critical for newcomers. If you can have a great product backed by great customer service, there is no way you will fail. I hope this sends a loud and clear message to the leadership of BULLS. Unlike 20 years, the flow of information is much faster, customers are much more informed, they need to re-think their business model, hanging your hat on just LBS, might not be a wise business decision, in fact, all it takes is one or two bad LBS, and your reputation is done.

8 months ago

( I've read some places online that say I should make sure to have a pure Sine Wave inverter to recharge the ebike battery. Other places say a modified sine wave inverter is fine. )
you should have a pure sine wave inverter.
this is My experience with a modified sine wave inverter ...
well I'll share my experience with cigar plug inverter, went through 2 vcr's and 1 power brick for my computer, it (cigar plug inverter in my travel trailer ) was not a pure sine wave converter, hence it slowly burnt up me electronic entertainment. so the money i thought i saved my buying a 40 dollar inverter. so buy a pure sine wave inverter .
like i said it burned the stuff out slowly.
now I know why my tv had this buzzing background noise, it was the cheep power inverter .
this is what I purchased
now it's worry free for me using my computer and tv in my travel trailer when camping without campground power.
that old tv commercial rang true to me pay me now of later. cheap inverter or pure one. but at the time I did not know any better because i bought a great brand name one, (monster power) I thought it was a quality product . but i did not know the differences of them,.
just trying too help.

Douglas Ruby
8 months ago

With my changeover to the 11-42 Shimano XT 11 speed on my base Turbo, I went back to the 48T. Personally, I think this is ideal since an 80 cadence gets you to the 40+kmh range in top gear. If you are riding in mountainous terrain and want to pedal monster descents in leg power, up to 54T bcd 104 chain rings can be purchased.

The bigger issue is finding matching bash guards and adjustment slack in the chain retension guard to keep the chain on. I had a pretty tough time finding the 44t bcd 104 bash guard. Most mountain bike guards support smaller chainrings and most road cranks designed for larger chain rings are bcd 110.

8 months ago

Thanks again for the replies. More Noob questions:

How exactly dose a mid-drive motor work and what makes it so much more efficient than a hub motor? Is the motor the only thing that determines power and torque or does the voltage of the batter matter as well? At my size and the need for hills would 350 W with a 36 V battery meet my needs?

Did you guys really order a bike online without riding it first? I can't imagine doing that but I have also found that bike store purchases are way more expensive.

I have ridden one but it was on a lark and I have no idea of the specifics of the bike other than it costs over 2 grand. Rode it around the lot and really liked it but I was surprised that I still needed to work a lot to go up a hill, even in the highest (or is it lowest) setting that gave me the most boost. I really need to make sure I get a bike that can haul me up the steepest hill. We haven't picked out a specific area yet but pretty obvious it will have monster hills and I want to be able to walk out my front door and go bike riding without loading onto a truck and going somewhere.

ez superfly
2 months ago

Nice bike..I still stay with the hub's

4 months ago

please use a body mount for the cam..much safer

Stephen Nicholas
10 months ago

Thank you, will subscribe as you are the most informative expert I have heard regarding bikes, brilliant reviews that are just great to listen to.... and watch! Ha ha
Am trying to get hold of my first el bike and am having trouble deciding. The Radmini is what I would love to own, yet live in Sweden and people just dont ship here.
Thats my biggest problem. So wanted something strong as Im a big guy at 109kg and also live on top of a mountain! Im also 62, so not so spry as to not need a lot of help!
Can you recomend anything? I do not mind paying within reason, yet love a bike thats good as a work horse, shopping and strong, also need to easily take it with me in the car or train
to get to the ciry. Many thanks Steve

T le Re c
11 months ago

make up your mind,you sound like a playback tape

1 year ago

Someone should start making skid plates like the one on this bike for all the Bosch bikes that don't have one.i'd buy the Cube fat bike but no bash guard ,can't do it.

Steve Hyder
1 year ago

Are you planning on doing a review of the full suspension version?

Broderick MTB
1 year ago

When are you going to feature that Monster E-FS Fatty? Any price idea? There are no info on this FS bike on their own website.

Tom S
1 year ago

Hi, after renting a Daymak electric bike with my kids while vacationing in Quebec City, I knew I wanted one. SInce then, I have watched hours of your reviews and find them informative and real. I just want you to know that I truly enjoy them and appreciate what you do!

1 year ago

bulls or haibike-  which would u prefer?

Tom Murphy
1 year ago

Hey Court, how about you use that new camera of yours to do a sped up video of 1 battery's worth of riding? Overlay the ride data so we could get a fuller sense of each bike's capability. Not necessarily as part of the review vid, maybe as a separate one linked in the description.

Cynthia Price
1 year ago

Torrance Beach - my old stomping grounds!

1 year ago

I also have a fat tire e-bike, you can ride it everywhere, the mountain, the trail, the beach, the snow.

1 year ago

what do you do with them after reviews?
do you sell them?

1 year ago

He eats them and then reviews how they taste

1 year ago

Like most of your reviews man! Keep em coming! Like many of us out there, deciding to buy a +2000 euro ebike is really difficult, especially when your like me, saving for the next road (or mountain) bike we all know we want every couple of years.... Still, Incredible bikes they make nowadays! I definitely will get me one of these ASAP!

Kunkku H
1 year ago

Fat e-bike is the most funniest bike ever. You can drive anywhere. Just add a chip and ride 50km/h easily ;) Greetings from Finland! I like your videos, I watch the reviews of every internationally sold bike, because I'm in the business.

Mark Elford
1 year ago

Looks like a great trail and a ebike thats capable.

Flo Mo
1 year ago

You are approaching the number 50,000 to subscribers. And soon there will be 100,000. The best channel for eBike reviews. Your videos are AWESOME like the BULLS Monster E S. Excuse my sometimes bad English.^^

Funny Guy
1 year ago

Why dont you tell the bike's price at the description? Instead we have to watch all 20minutes

G Henrickson
5 months ago

Look it up while watching the video. Prices change all the time.Just the word premium gives rise to a price of 5K or more. Probably 6K or more.

6 months ago

He says the price at 2 minutes and 54 seconds why don't you try paying attention ;)

Funny Guy
1 year ago

ElectricBikeReview.com Big fan of your videos and thanks for the reply. Just include price, its important

1 year ago

Good question! Sorry for the inconvenience... for all of the reviews I link to the price and bike details at the top of the description. Sometimes I say the price earlier in the talk and there are times I haven't said it at all because it was undecided. I think the price quoted in this video is a bit lower than their original MSRP earlier this year

John Moura
1 year ago

Great review - - Beautiful bike!

1 year ago

Thanks John! I like the bike too... their full suspension fat bike (seen in the background of some of the shots at the beach) is bright yellow and looks like a wasp, still cool but this one looks more standard like their emountain bikes which is nice