Biktrix Juggernaut Review

Biktrix Juggernaut Electric Bike Review 1
Biktrix Juggernaut
Biktrix Juggernaut 8fun Bafang Bbs02 Mid Drive Motor
Biktrix Juggernaut 48 Volt Downtube Battery Pack
Biktrix Juggernaut Bafang Lcd Display Panel
Biktrix Juggernaut Battery Led Indicator And On Off Switch
Biktrix Juggernaut Large Wellgo Platform Pedals
Biktrix Juggernaut Tektro Novella 180 Disc Brake
Biktrix Juggernaut Shimano Alivio Derailleur
Biktrix Juggernaut Upgraded Tektro Levers Integrated Bell
Biktrix Juggernaut Electric Bike Review 1
Biktrix Juggernaut
Biktrix Juggernaut 8fun Bafang Bbs02 Mid Drive Motor
Biktrix Juggernaut 48 Volt Downtube Battery Pack
Biktrix Juggernaut Bafang Lcd Display Panel
Biktrix Juggernaut Battery Led Indicator And On Off Switch
Biktrix Juggernaut Large Wellgo Platform Pedals
Biktrix Juggernaut Tektro Novella 180 Disc Brake
Biktrix Juggernaut Shimano Alivio Derailleur
Biktrix Juggernaut Upgraded Tektro Levers Integrated Bell


  • An affordable fat tire electric bike delivered through Kickstarter 2014-2015, now available for direct purchase
  • Powerful BBS02 mid-drive motor system keeps weight low and center for improved balance, also makes maintenance and transport easier (quick release on both wheels)
  • Upgraded drivetrain, sturdy aluminum fenders, integrated LED headlight, optional suspension fork on the 2016 model, only available in one size and sold online (difficult to test-ride or service directly)

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Video Review

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$1,999 (Optional Battery and Brake Upgrade for $2,499)

Body Position:


Suggested Use:

Urban, Trail, Sand and Snow

Electric Bike Class:

Throttle on Demand (Class 2)
Learn more about Ebike classes


1 Year Comprehensive, 800 Charge Cycles on Battery


United States

Model Year:


Bicycle Details

Total Weight:

55 lbs (24.94 kg)

Battery Weight:

7.2 lbs (3.26 kg)

Motor Weight:

8.5 lbs (3.85 kg)

Frame Material:

T6 6061 Aluminum Alloy

Frame Sizes:

19 in (48.26 cm)

Geometry Measurements:

Seat Tube: 19

Frame Types:


Frame Colors:

Black with Red and Orange Accents

Frame Fork Details:

Rigid Aluminum Alloy, Optional RockShox Bluto Suspension

Attachment Points:

Fender Bosses

Gearing Details:

7 Speed 1x7 Shimano Alivio

Shifter Details:

SIS Thumb Shifter


Aluminum Alloy, 60T Chainring


Wellgo Aluminum Alloy Platform




Ritchey Adjustable Angle


Aluminum Aloy, Low Rise

Brake Details:

Tektro Novella Mechanical Disc with 180 mm Rotors, Tektro Levers with Integrated Bell and Motor Inhibitor (Optional Hydraulic Disc Brake Upgrade)


Black, Flat Rubber


Velo Comfort

Seat Post:

Aluminum Alloy


Double Walled Aluminum, CNC Sidewall


Black, Stainless Steel, 13 Gauge

Tire Brand:

Kenda Juggernaut Sport, 26" x 4"

Wheel Sizes:

26 in (66.04cm)

Tire Details:

K-Shield Puncture Resistant

Tube Details:

Schrader Valve


Side-Mounted Aluminum Alloy Kickstand, Front and Rear Short-Length Aluminum Fenders, Plastic Chain Guide, Bell, Integrated LED Headlight and Stand-Alone LED Backlight


Locking Removable Battery Pack, KMC High-Strength Rust Resistant Chain, Custom Motor Firmware, Smart Charger 100-240V 50-60Hz 2A, Load Capacity 275 lbs (125 kg)

Electronic Details

Motor Brand:

Bafang, BBS02

Motor Type:

Mid-Mounted Geared Motor
Learn more about Ebike motors

Motor Nominal Output:

500 watts

Motor Peak Output:

750 watts

Battery Brand:

Samsung (Sony Cells on Upgraded Battery)

Battery Voltage:

48 volts

Battery Amp Hours:

11.6 ah (Optional 10.4 Ah)

Battery Watt Hours:

556.8 wh (Optional 499.2 Wh)

Battery Chemistry:


Charge Time:

5 hours

Estimated Min Range:

20 miles (32 km)

Estimated Max Range:

50 miles (80 km)

Display Type:

Bafang C961, Fixed Backlit Monochrome LCD


Battery Level (5 Bars), Speedometer, Assist Level (0-5), Trip Distance, Odometer, Average Speed, Max Speed, Clock

Display Accessories:

Independent Button Pad Near Left Grip

Drive Mode:

Cadence Sensing Pedal Assist, Twist Throttle

Top Speed:

20 mph (32 kph)

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Written Review

The Biktrix Juggernaut made its debut on Kickstarter in November 2014 and was successfully delivered to all backers by July 2015. It’s a fat electric bike that’s a step up in terms of components and features but still aiming at that value market. For ~$2k you can get the base model which uses a more standard sized battery with good Samsung cells and Tektro mechanical disc brakes… or for ~$500 more you can get the larger battery with higher quality Sony cells and hydraulic disc brakes. Both models use the 8Fun BBS02 mid-drive motor that keeps weight low and center, offers great torque for climbing and enables quick release and easier tune-ups on both wheels. The motor is using custom firmware but does not offer shift sensing which means the chain, cassette and derailleur will endure more force when riding. You could get this same motor and battery with shift sensing from E-RAD but the kit alone would cost ~$1,700. Thankfully, the Biktrix Juggernaut offers an upgraded KMC chain (emphasizing strength and rust resistance) and a Shimano Alivio derailleur which is two steps up from most other value-priced electric fat bikes I’ve reviewed recently includign the RadRover and Voltbike Yukon which both use Tourney TX. For me, the centerdrive motor is really the star of the show here but the included fenders, lights and adjustable stem all add value.

Driving the Juggernaut is a 500 watt nominal, 750 watt peak mid-drive motor from 8Fun. I’ve reviewed this motor on its own here but some improvements have been made since then including better power activation and durability. As mentioned earlier, Biktrix worked with the firmware a bit to optimize it for their fat ebike and it felt very smooth and responsive during my test ride. Instead of powering the wheel directly like hub motors, this centerdrive pulls the same chain that you do as you pedal. In so doing, it leverages the seven speed cassette in the rear allowing it to operate more efficiently. Basically, this motor will climb better and go further than an equivalent hub motor and it keeps weight low and center on the frame instead of at the rear. This is a huge benefit when going in for tuneups, changing tubes on the trail or simply transporting the bike. Both the front and back wheel offer quick release, this benefit cannot be overstated on a fat bike platform which traditionally tend to take up more space and often do not fit in the back of cars or as easily in garages. The Juggernaut is easier to manage in this sense and it handles well.

Powering this electric bike is one of two battery options (both offering higher quality Lithium-ion cells). The base model is a 48 volt 10.4 amp hour design with Samsung cells… It should get you 20 to 40 miles per charge and offer a good sense of power. The upgrade is a 48 volt 11.6 amp hour design with premium Sony cells that offer a higher C-Rating. This pack will get you 20 to 50 miles and might feel zippier. Energy can flow into and out of this pack more quickly and with a higher capacity, it lets the bike ride longer. The caveat here is that if you accelerate faster and ride at higher speeds longer on the larger pack it will drain quicker and that’s why I estimate both will get 20 miles per charge at the highest level of assist or using the twist throttle. Also, depending on which version of this ebike you get, the battery pack itself may look different. The Kickstarter and 2015 model use a nice downtube mounted pack that has an integrated LCD and on/off switch. This pack has to be activated before you can turn on the display. I’m told that the newer pack does not have to be switched on independently and for me that’s a nice improvement because it means you’ll be less likely to forget to de-activate the battery once your ride is over.

Operating the Biktrix Juggernaut is fairly simple and very standard. I’ve seen similar Bafang LCD displays on other electric bikes and they tend to hold up well. Once the battery pack is charged, mounted to the frame and switched on (if you’ve got a first generation build of this ebike) you can switch on the display by pressing a rubber power button on the remote button pad. This pad is easy to reach, even when you’re hand is on the left grip while riding. Once activated, the display console comes to life showing battery level, speed, assist level and a few more readouts. You can cycle through max speed, average speed, odometer, clock and trip distance by pressing the power button again (and hold it to turn the bike off). You can also go into the settings and choose from either 3, 5 or 9 levels of assist. The additional levels don’t offer more power, they are more like finer increments offering more choices so you can find a perfect speed instead of going from low, medium and then high with the three level configuration. Physically speaking, the display can swivel forward to back to reduce glare if not overtightened but it is not removable. Because the bike is predominantly sold online you’ll have the opportunity to set things up just how you like them (or work with a local shop to do so upon arrival) and the handlebars may be adjusted forward or back to change reach and ride position. The adjustable stem used is fairly short which will reduce the strain it endures when riding off-road but I’m guessing that it may still begin to rattle over time if not tightened… that’s just what happens with this style of stem. I tend to prefer a more upright ride and sometimes go for cruiser bars which you could add on but the low-risers that are provided work well enough. One final and important note here… when ordering the Juggernaut from Biketrix you can request that they “unlock the throttle” meaning that you will be able to twist and go at pedal assist level zero and override all other levels beyond their default setting. The bike will still only go up to 15.5 mph or 20 mph (depending on your geography) but the throttle will be active at all times when the system is powered on. I personally prefer this type of riding but it does increase the risk of accidental activation and because a twist throttle was used vs. a trigger throttle, if you accidentally bear down on the right grip during a tense moment you could accelerate when you really intended to stabilize or even prepare for braking. Keep this option and its potential consequences in mind when ordering.

I really enjoyed the Juggernaut and was impressed with the custom frame work that was done to accommodate the BBS02 mid-drive motor system. They had to bend the chainstays in to accommodate a standard sized 73 mm bottom bracket here but reinforced the tubing by creating dimples and gusseted the top tube near the seat tube as well. It felt solid, weighed less than comparable options, has an upgrade path for increased power and range and just looks really good. The black frame, spokes, motor and battery and other accessories work together nicely and most wires are internally routed to reduce snags. For 2016 you’ll also get a tapered head tube which is stronger and can accommodate a RockShox Bluto suspension fork for improved comfort. While this electric fat bike is only available in one color, it looks pretty good. It’s also limited to just one frame size but you can adjust that stem, swap out the handlebars, quick release the seat post and that all contributes to better fit. Keep in mind the $150+ shipping cost and on-site assembly you’ll need to do. I’ve rated this bike based on the MSRP but it appears they offer sales and you can get it even cheaper than ~$2k which is exciting. It’s a great platform for fun neighborhood riding if you like the fat style but it’s actually quite capable on light trails or in sand and snow due to the increased torque of the mid-drive.


  • Great aesthetic… the spokes, kickstand and pedals are black, the motor and battery are black, the frame and fenders are black… everything matches and the integrated wires blend right in
  • Higher end drivetrain, the derailleur is Alivio which is two steps up from Tourney TX which most other value priced ebikes use, should last longer and stay in tune
  • The 2016 model will offer an oversized tapered headtube so you can add a RockShox Bluto suspension fork (and Biktrix will offer this as an upgrade for ~$700), the battery pack on this newer model will also not require independent activation
  • You can request that Biktrix unlock the throttle so you can use it in level zero and override assist, the stock setup only lets you use throttle power when in pedal assist mode and only up to the level of pedal assist you’re currently in
  • I like the optional hydraulic disc brake and battery size upgrades… the mechanical brakes work fine and 180 mm is a good size for the rotors but hydraulic are easier to pull and for people who want to go further these upgrades are nice at ~$500
  • The included fenders are pretty cool… aluminum alloy is solid and since they aren’t full-length you don’t kick the front fender as easily or get the same rattling as some other options (though there is still some ratting if they aren’t adjusted properly)
  • Front and rear lights are included with the bike, the front is nicer because it’s integrated (meaning it runs right off the main battery pack) the rear light is more standard (using AA batteries) but definitely good to have vs. not
  • Pedal assist is smooth and responsive (the cadence sensor is built right into the bottom bracket/motor area)


  • The adjustable stem helps different sized riders fit the bike (since the frame only comes in one size) but it can get loose over time, especially if riding off-road, keep an eye on it and tighten it if it becomes loose
  • Only available in one standard ~19″ frame size but the top tube is sloped making it easier to stand over
  • In order to power on the Kickstarter and 2015 version of the Juggernaut you first have to activate the battery pack and then press power again on the button pad, this adds time and makes it easier to forget to de-activate the battery after a ride
  • The battery pack takes up most of the space where a bottle cage might mount… consider a saddle rail adapter or something like a Camelbak
  • I noticed that there wasn’t a slap guard on the right chain stay, this means the chain could bounce into the frame and chip it if you’re riding on rough terrain, consider adding one like this yourself, also I noticed that the rims aren’t punched out like a lot of fat bikes (holes are not cut into the rim to reduce weight) but this bike still weighs less than many bikes that do have the punchouts
  • There is no shift sensing built into the mid-drive motor on this ebike which means the chain and gears can experience more force and wear if you don’t shift smoothly and carefully (ideally when you are not activating the motor) the upgraded KMC chain and Shimano Alivio drivetrain should hold up better than lower level parts


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More Biktrix Reviews

Biktrix Stunner Review

  • MSRP: $1,999
  • MODEL YEAR: 2015, 2016

A stylish cruiser style ebike with excellent weight distribution available in high-step or step-thru frames but only one size ~19.5". Unique "upside down" motor mounting design improves ground clearance, quality Samsung battery pack, one year…...

Gary Gibbens
11 months ago

Comparing the Sand Viper, the Volt, and several other fat tires bikes, this one seems to have more features. How does this one compare to the other lower end fat tire bikes?

Court Rye
11 months ago

Hi Gary, I liked it! The mid-drive makes a difference if you shift properly… you’ll get better range and climb more easily but could also wear the chain and sprockets. I like how the Biktrix Juggernaut looks and I believe they’ve continued refining it in recent years. Compared with the early Sand Viper that had the front hub motor I’d definitely go for the Biktrix but now there are 500 watt motors in the rear and other bikes with suspension like the RadRover… I think it has become very popular recently.

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3 weeks ago

I second @Mike Burns' opinion! I love the Hookworms on my Teo fat bike in 26x2.5 (installed on original rims). They actually corner better on stone dust paths than with the original Kenda Juggernaut tires. They are super quiet and the battery range extended a LOT! Makes the bike MUCH easier to pedal without pedal assist (or you barely need any assist at all which helps the battery range as well).

3 weeks ago

From what I've read, the Kenda's are good tires, except for pretty bad rolling resistance. The same site that gave the Kendas 1/5 for rolling resistance (and other factors) gave the Mammoth 2/5 (not recommended). You can compare them side by side here. According to this review, the Mammoth is very good on dry, but not too good in snow.

You have to do with the giant bright yellow Maxxis logo :eek:

Pricing in Canada is always around 150$cad, except at this store at 109$.

3 weeks ago

Kenda's are known to have poor rolling resistance especially on Fat Bikes. Seems like most fat bikes come with them and first thing I change off.

3 weeks ago

I am so happy to finally see this new 1000 watt mid drive coming out from Biktrik. Roshan has done an excellent job with this new one. As a guy 6'1 230lb. This fits what I was looking for. A nice integrated torque sensor mid drive with some power. What do you guys think?

1 month ago

Thanks for the recommendation @Christopher85083 on the Hookworms!

The Hookworms ride so much better than the stock Juggernaut's on my RadRover. The Hookworm rubber is so grippy. The extra rubber at the middle seams of the tire hasn't even worn off yet. That's tough!

2 months ago

The Maxxis are installed and feeling great! I will post pictures and comments later.

I want to comment though on the Kenda Juggernaut's removal from the rims (especially for @SuperGoop)..... it was EXTREMELY frustrating and not for the faint of heart.

Doing it by hand? no way Jose; with plastic levers? impossible. Using every trick found in forums and youtube? no dice. I was just about to give up when it hit me to look into "how to remove a motorcycle tire". That's when I learned there are long metal levers (tire irons or tire spoons) used to pop the bead from motorcycle tires. Those should do the trick just fine..... There were none available in local stores, only online (of course, welcome to Canada once again)... That's when I found a bunch of videos online using the "zip tie technique". Well that worked like a charm!!!!

Check out this video as an example (jump ahead to 9:00min):

for the first tire, I used 6 zip ties (it's easy to pinch the tube when tightening the ties - be careful!). I popped the first bead easily with one plastic tire lever. The 2nd bead, I removed by hand with a bit of force.

For the 2nd tire, 3 zip ties for half the tire was more than enough.

The Maxxis were fairly easy to install only by hand. I would assume zip ties will be required again to re-install the Kendas.

Moral of the story: DO NOT get a flat tire far away from civilisation with those #$^#$%@$ Kendas!!! Or at the very least, carry zip ties and cutters for the zip ties.

I was naively thinking I might switch the Kendas and Maxxis around a few times between now and winter... no way!!! sticking to the Maxxis until it snows again!

2 months ago

Thanks for the info Roshan, I like that you'll be bringing back the higher end components as options, kind of a good middle ground if you can't go all the way to custom.

Any idea when?
Already available here: under Additional Options :)

2 months ago

The Juggernaut is not a good tire. Glad you replaced it.

3 months ago

wow has any one seen this new Biktrik juggernaut with the purpose built frame for the bbs02b motor. I've been dreaming about a frame built for this bad boy. I think Roshan did an absolute wonder job on this bike. The one thing I did not like about the bafang kit was the cow utter look of the drive hanging below a bike frame. But this right here solves that problem.

3 months ago

Does anyone find it difficult to remove the 26x4 Kenda Juggernaut? My Yukon 750 comes with a 30 TPI wired bead, and it is stiff. I attempted to rotate my tires because the rear was wearing faster than the front, but my standard plastic tire levers were not strong enough for the task, so I just left it alone for now.

On YouTube, it seemed so easy, but I think it is because those fat tires are 60 tpi, or 120 tpi and much softer.

Make sure that the same side wire bead on the opposite side of the wheel (opposite of the wheel itself, not one side of the rim to the other...) is all the way to the center of the rim - this will allow relief on the side that you're trying to remove. I had the hardest time with my radrover, same tire - went to the shop and they suggested I try that...went out to my car and it popped off like nothing!

3 months ago

Does anyone find it difficult to remove the 26x4 Kenda Juggernaut? My Yukon 750 comes with a 30 TPI wired bead, and it is stiff. I attempted to rotate my tires because the rear was wearing faster than the front, but my standard plastic tire levers were not strong enough for the task, so I just left it alone for now.

On YouTube, it seemed so easy, but I think it is because those fat tires are 60 tpi, or 120 tpi and much softer.

2 years ago

Keep up the good work! :D

2 years ago budget e-bikes please :)
2 years ago

+thegaminlegend Doing my best, thanks! Open to feedback anytime as well ;)

Gardener Rob
2 years ago

Great Vid, these fat bikes are certainly becoming more popular I can see why. Commute to work on weekdays then on the weekend do some fun of road rides.
2 years ago

+Gardener Rob Yeah! I really like fat bikes, the wider tires feel stable and offer some cushion but the weight and friction are a drag without the motor. I feel like fat bikes plus ebikes is a perfect combination :D

2 years ago

Court, I can't get over the similarity btw this biktrix frame and the several years old Optibike Pinoneer Allroad frame - they appaear identical from toptube to the angle of the seat stays where they meet the chain stays. Have a look and tell me I'm not seeing things:
BTW, did Optibike have anything new at Interbike?
2 years ago

+ForbinColossus Good eye! Yeah, they look very similar... I reviewed the Allroad a while back but it didn't have the wide rear axle or fork. Maybe the main part of the frame did come from the same design or something? To answer your other question, no, Optibike wasn't at Interbike and I'm not sure I've ever seen them at a show before. I usually drive to their headquarters in Boulder Colorado to do reviews :)

Mathieu Bouvier
2 years ago

that rear fender is pretty pointless lol, thx for sharing

Mathieu Bouvier
2 years ago I have first hand experience on this because my rear fender slide in and out, trust me your back will be covered with water in the current fender position, its more of a cosmetic thing i guess lol
2 years ago

+GiantEnemyCrab I'll try to test that next time, I figured at half length it would stop the flecks that would fly up and forward unless you slammed on the brakes :D

2 years ago

+Mathieu Bouvier haha, yeah! This rear fender looks like a half fender, but with that length, liquid will be splashing to the back for sure.....

Mathieu Bouvier
2 years ago i dont see how that fender would keep mud off your back though, the water/mud leaves the tire at the top of the tire and that spot isnt covered :( nice fat bike for sure)
2 years ago

+Mathieu Bouvier I wasn't able to test in mud or water but my guess is that it just keeps the splatter marks off your back. The front fender doesn't look long enough to protect your shins but it would keep mud and water out of your eyes. I see a lot of these shorter fenders/mudguards on mountain bikes vs. full length on city bikes :)