BionX S-350 Review

Bionx S 350 Electric Bike Kit Review 1
Bionx S 350 Electric Bike Kit
Bionx S 350 Gearless Hub Motor
Bionx S 350 Dx Battery Pack
Bionx S 350 Console Display Buttons
Bionx S 350 Display Panel
Bionx S 350 Hub From Above
Bionx Flier Page 1 1
Bionx Flier Page 2
Bionx S 350 Electric Bike Kit Review 1
Bionx S 350 Electric Bike Kit
Bionx S 350 Gearless Hub Motor
Bionx S 350 Dx Battery Pack
Bionx S 350 Console Display Buttons
Bionx S 350 Display Panel
Bionx S 350 Hub From Above
Bionx Flier Page 1 1
Bionx Flier Page 2


  • Versatile electric bike conversion set with four levels of assist, four levels of regen and throttle mode
  • Available with five battery pack configurations including two rear mount and three downtube mounted
  • Deep Sleep mode protects cells when system goes unused for extended periods (2 months or 2 weeks if < 10% charge)
  • LCD display is backlit, removable and symmetrical for use on right or left handle, also includes external button pad

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Video Review

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$2,099 USD

Suggested Use:


Electric Bike Class:

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


2 Year Covering Manufacturer Defects (1,000 Charge Cycles)


United States, Canada, Germany, Austria, Switzerland, Australia, UAE, India, Columbia, Mexico, South Korea

Model Year:


Bicycle Details

Total Weight:

17 lbs (7.71 kg) (Motor, Battery, Display, Button Pad and Controller)

Battery Weight:

8 lbs (3.62 kg)

Motor Weight:

9 lbs (4.08 kg)

Gearing Details:

10 Compatible with 8, 9 and 10 Speed Cassettes

Brake Details:

Magnetic Sensor to Cut Power and Activate Regenerative Braking (Attaches to Stock Brake Levers)

Wheel Sizes:

20 in (50.8cm)26 in (66.04cm)28 in (71.12cm)


Comes Spoked Into Multiple Wheel Sizes (700c, 26", and 20"), 6 Volt DC Output, Removable Battery Charges on or off Frame, Spokes Come in Silver or Black, Rear Rack Battery Option has a Built in Light, Motor Locks for Security when Display is Removed, Deep Sleep Protects Battery from Discharge Damage After Two Months (Or Two Weeks at < 10%) of Inactivity

Electronic Details

Motor Brand:


Motor Type:

Rear-Mounted Gearless Direct Drive Hub
Learn more about Ebike motors

Motor Nominal Output:

350 watts

Motor Torque:

40 Newton meters (10 Nm Nominal)

Battery Brand:


Battery Voltage:

48 volts

Battery Amp Hours:

8.8 ah (Also Available in 6.6, or 11.5 ah)

Battery Watt Hours:

423 wh

Battery Chemistry:

Lithium Manganese Cobalt

Charge Time:

4.5 hours

Estimated Min Range:

50 miles (80 km)

Estimated Max Range:

75 miles (121 km)

Display Type:

Backlit LCD (Removable, Symmetrical Integrated Buttons for Right or Left Handed Users)


4 Proportional Assist and Generate Modes, Lighting Controls, Battery Voltage, Trip Distance, Odometer, Chronometer, Average Speed, Clock

Display Accessories:

Independent Button Pad (With Variable Speed Trigger Throttle)

Drive Mode:

Torque Sensing Pedal Assist, Trigger Throttle

Top Speed:

20 mph (32 kph) (Unless Otherwise Specified in Specific Jurisdictions)

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Written Review

The BionX S 350 electric bike conversion kit includes a light weight, gearless hub motor designed for rear-wheel use, an LCD display panel and button pad as well as a battery pack of your choosing. It’s one of the most polished, flexible and sophisticated ebike kits around and offers everything from pedal assist to throttle, regeneration mode and regenerative braking. This kit resembles the older SL 350 which was produced through 2014. BionX has been shortening their naming conventions to make the space less confusing and that’s where the S comes from. This kit in particular is really their bread and butter and thanks to the five battery options it will offer you weight savings, increased range or power. You also get to choose from a rear-rack design or a downtube mounted setup.

The motor included with this kit offers 350 watts of power in a high torque configuration. It delivers up to 29.5 lb.-ft (40.0 Nm) of torque with nominal output of 6.6 lb.-ft (9.0 Nm). That’s pretty good considering its relatively small visual footprint and weight (the SL and S series from BionX weigh roughly 2.5 pounds less than the earlier PL 350 series). I like the new wavy design on the hub casing and have long been a fan of the near-silent operation of these gearless kits. This motor activates very smoothly, relying on a torque sensor built right into the hub. In order to make it go you just turn on the unit, choose an assist level and begin pedaling. Alternatively, you an use the variable-speed trigger throttle but the bike must be going at least two miles per hour for this to work (the minimum speed requirement is a safety feature).

Being gearless, the S 350 motor relies on powerful magnets inside to drive the bike forward. These tend to last longer than plastic gears used on geared hubs. The magnets also enable regeneration riding modes that will help to slow you down when descending hills or provide an added challenge when pedaling on flats in a sort of “workout mode”. There is also a standard regenerative braking trigger that activates when you pull the right brake lever. The downsides of gearless direct drive systems like this are increased weight and some cogging when the system is not actively assisting. Cogging happens when the magnets inside the motor pass the stater (a metal rod that becomes magnetized as electricity flows through) and repel it as shown in the video review. While cogging can’t really be helped, BionX has done a great job of reducing its affect on the ride quality of their kits. One area they could improve however is by offering two regenerative brake sensors or an option for complete ebike specific brake levers. Tektro makes some great levers that are included with other kits but the downside of this is that they only work with mechanical brakes (not hydraulic) and may be of a lower quality than the levers your bike already has… and having an extra set of levers also creates waste.

The battery pack options for the BionX S350 are plentiful and possibly confusing. Let’s break it down in a second but first off, it’s worth mentioning that all packs use Lithium Manganese Cobalt cells by Panasonic. These are light weight, durable and warrantied for two years. All packs also include the Deep Sleep system which automatically cuts all power draw after two months (or two weeks if the battery is lower than 10%) of inactivity, helping to prevent damage. Now, which pack to get? There are three size designations including L (Large) XL (Extra Large) and VL (Very Large). There are also two types of mounting options including D (Downtube) and R (Rear). So when you mix the letters together you get the following rear rack options: S 350 RL (rear mounted large 48v 6.6ah) and S 350 RX (rear mounted extra large 48v 8.8ah).

And you get the following downtube options: S 350 DL (downtube mounted large 48v 6.6ah), S 350 DX (downtube mounted extra large 48v 8.8ah) and S 350 DV (down tube mounted very large 48v 11.5ah). Simple right? Please note that the images above aren’t perfect, while they do show BionX rear-mounted battery packs they don’t show the latest decals which are black and show little bars (like a bar chart) from left to right. The Large pack has one bar, the Extra Large pack has two and the Very Large pack has three (the goal is to make it easier to understand the whole size thing, more bars = more juice inside). Okay, back to the review… My preference is for the downtube mounted packs because they keep weight low and center to the bike but they also take up the spot where a water bottle cage might otherwise go. Since the hub motor is already mounted at the rear of the bike, having a heavy rack there as well is not ideal. One thing I do like about the rear packs however is the inclusion of a built in LED light for safety.

The second generation (G2) display panel used on this and other BionX kits is quite good. It’s large and easy to read, backlit for use at night and symmetrical for easier use by left and right handed riders. There are two buttons on each side of the display which activate the unit and allow you to choose from one of four regen modes, zero mode or four levels of assist. You can operate the system just fine from this main panel but BionX also includes a stand alone button pad that can be mounted extremely close to grips and brake levers for even easier access when riding. This pad includes a + and – button (for navigating assist levels) as well as a red variable-speed trigger throttle which can activate the motor without pedaling. It’s a beautiful design and so thoughtfully constructed that it works with all kinds of bicycle cockpit setups, not just standard flat bars. Even with the recumbent trike shown in the image below, which has vertical handle bars, the button pad works great and the LCD display panel is still visible mounted front and center. In addition to being easy to use, the display panel is also removable so you can keep it safe from weather, tampering and vandalism. Awesome.

BionX was started in 2000 as EPS (Electric Propulsion Systems) and was acquired by Magna (a Canadian automotive company) around 2008. Since then it has grown into one of the largest, most trusted high-end manufacturers of drive systems for electric bicycles in the world. The S 350 is their workhorse kit that is sold directly to shops (for install on end user bicycles) and OEM manufacturers like OHM, Yuba, Xtracycle and Smart. It’s a great setup and one of the best options for people who have a beloved or unique bicycle that they want to convert to electric. The kit is available in a wide range of wheel sizes including 20″, 26″ and 700C and can also be configured to power third party lighting systems.


  • Lightweight, redesigned hub motor is 2.5 lbs lighter and more stylish than older PL 350 models
  • 48 volt battery system is more efficient and thus, longer lasting than older 36 volt BionX systems
  • Works with almost any bike, including those with smaller wheel diameters like folding bikes and recumbents
  • Both battery configurations (rear rack or downtube) lock to the frame for security and can be charged on or off of the bike
  • Gearless hub motor runs smooth and quiet, has built in torque sensing and regenerative braking
  • Rear-wheel hub motor exerts force onto the part of the frame that is designed to handle it vs. front hub designs, great if used on bicycles that have front suspension forks
  • Works with disc brake setups as well as v-brakes and isn’t too wide to accommodate a cassette


  • Installation is a bit complicated, BionX sells directly through shops who will handle it for you or as a built in option on OEM electric bikes
  • If purchased as an add-on kit the wires and cables won’t be integrated into the frame which might not look as nice as a purpose-built ebike
  • Trade offs in how you mount the battery: rear rack is heavier and unbalanced, mid mount takes water bottle spot
  • this is one of the most expensive electric bike conversion kits around but also one of the best with many options and a solid warranty
  • Throttle and computer may not mount as easily to road bikes with drop handle bars due to shape and size of tubes and grip tape
  • This kit is only compatible with 135 mm axle size so check your mountain bikes carefully or bikes with thru axles


More BionX Reviews

BionX D-500 Review

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  • MODEL YEAR: 2015, 2016

Top of the line 500 watt electric bike kit with a focus on acceleration and low end torque for climbing. Unique center-spoked design for improved comfort and wheel durability, narrow casing accommodates a larger cassette…...

BionX P-350 Review

  • MSRP: $1,799
  • MODEL YEAR: 2014, 2015

A more affordable, less powerful electric drive kit from BionX with rear-mount battery design only. G2 console offers four levels of assist, four levels of regen and throttle mode with…...

BionX SL 350 Review

  • MSRP: $1,999
  • MODEL YEAR: 2013

Top of the line kit, 350 watt motor is ~2.5 lbs lighter than the older PL 350 model, includes advanced security features. Available in two designs to fit most bikes: mount to down tube or integrated into…...

BionX PL 350 Review

  • MSRP: $1,499
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A line of three 350 watt, 37 volt electric bike conversion kits. Available in mid-frame or rear rack styles to fit just about any bike...

BionX PL 250 Review

  • MSRP: $1,199
  • MODEL YEAR: 2013

One of the lightest electric bike conversion kits available anywhere, just 7.3kg (16.1 lbs). Mounts to water bottle eyelets on downtube of, distributes weight evenly front to rear...

Jean Guy
3 years ago

Bonjour,j’ai un tandem Norco Duo Alu 6061,suspension avant frein V,hybride,26” ,24 vitesse,pneu Nimbus (pas de crevaison)Il est comme moi pas jeune,mais c’est une bonne machine selon moi.Il a environ 10 ans et 10000 klm.Je voudrais le convertir avec le kit S 350 DV.Je voudrais faire environ 80 a 130 klm par utilisation assisté et pas beaucoup de grosses pentes.Les 2 personnes et notre matériel a part le velo font 275 a 300 livres. Après avoir lu les infos sur internets,j’ai pensé que le S 350 DV serait mon meilleurs option.On n’est agé de 70 ans et nos jambes sont plus faibles. J’aimerais avoir votre opinion si vous avez du temps. Merci Jean Guy Je suis de Montréal Qc Canada

3 years ago

Neat ! Il semble que votre vélo est un tandem ( je l’ai fait une recherche d’image en utilisant Google ) . Je crois que l’un de ces systèmes BionX pourrait fonctionner , y compris la S 350. Le seul domaine où vous pourriez avoir besoin pour personnaliser un peu est avec le montage de la batterie, panneau d’affichage et la gâchette . Les fils pour faire ce travail pourraient avoir besoin d’ être étendu afin qu’ils puissent atteindre tout le chemin du retour vers le moteur . Sinon, vous pouvez obtenir une trousse de roue avant qui exigerait un câble beaucoup plus courte . Un système qui pourrait fonctionner pour cela est la Dillenger 350 Geared car il utilise également un tube diagonal batterie montée qui prendrait la place de votre bouteille d’eau sur le tube diagonal avant :)

3 years ago

Can i ask what was used to mount the battery to the tube of the recumbent trike as most of them do not have a water bottle mount in that position?

3 years ago

Great question Joe! On the second to last picture here you can see this wrap-around metal adapter thing that sort of resembles a bottle cage adapter but is fit for a larger tube. I’ll do some searching and ask BionX for you to see if we can figure out how to get one ;)

3 years ago

Hi Joe, I just heard back from BionX and they said “The harness on the bike in the video is attached to the boom arm clamp with a special bottle cage mounting bracket that was supplied by Catrike, it’s a stock part for their recumbent bikes.”

3 years ago

Thanks just wondering as trying to figure out how i can mount my battery on the boom instead of on rack where i have it. Its not a bionex one but uses a water bottle mount bracket so will look into that one from catrike see if it will work thanks.

3 years ago

Cool, yeah this would be a neat accessory if it was sold separately. I do see a few bottle cage brackets on Amazon like this one but they don’t look especially strong (or like they’d fit the larger tube diameter like the Catrike uses).

3 years ago

hmm doesn’t look like its available as an accessory so only comes with catrike damn :)

3 years ago

Yeah I woldn’t trust anything like that one to hold a battery that and no they won’t fit on the larger tubes anyway. I guess i could look into the one tcycle makes but not sure if it will work with water bottle mount but i guess i can contact them and ask etc :) You would think someone would make something like this though for trikes since way better then using the rack which is where mine is atm.

3 years ago

I’m not sure if you have experience with manufacturing and design but maybe this is the perfect niche market to go after as an entrepreneur? You’re probably not the only one looking for a sturdy adjustable bottle cage that would work with recumbent bikes. You could also try to make just one for yourself at a TechShop or other DIY space.


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Falco Support
1 day ago

Dear Mr. Nelson,

I wish to thank you for your continued interest in our company and products. Please see answers below:

1. Are you still pushing the six-phase motor?
Our motor technology is based on 5-phase motor architecture and is now patented. You may read about it here: We have two patents granted and several pending. Our latest evolution called eDrive is the integration with virtual reality training program such as Zwift. Here is the link to that:
Here are some comparisons for you to review:

2. How many US dealers sold more than 3 last year?
In order to stay a dealer, they have to sell a minimum of six systems a year. I am happy to send a dealer application and agreement if you like.

3. Why Trikes, recumbents, tandems, and cargo bikes? What's up with regular bicycles?
Our product is quite premium. Regular bicycle market has gone to very low price points and bicycle owners do not have the budget to afford our system.

4. Why were you selling the product when it apparently did not work reliably?
We offer 5-year warranty in the market. Why do we offer that warranty if there were reliability concerns? Even Bosch does not offer more than 2 years. Why are they selling their product even after having recalled twice? Why does Toyota continue to sell its cars after having recalled so many times? Why does Pedego continue to sell their bikes after having recalled 5000 Lithium batteries not so long ago?

5. What is your lowest price functional motor kit?
Kit is a derogatory word to describe our product. I request you not to use it. Here is the of our systems. Lowest is $1895.

6. If the UK dealer was so poorly equipped to handle your product, why did you allow him to become a dealer?
In business, it is called the learning curve. Business is a great teacher. You learn from your mistakes.

7. Referencing #6, why did you sell him so much product?
We did not sell him a lot. He had a number of prototypes and sales samples which were developed during the development stage and used during Eurobike.

8. Does Harry receive a salary, or straight commission?
Mr. Harry does not receive a salary or commission. He has placed his order recently and is very excited about it. He shared his excitement with this forum.

9. What turn-key ebikes are manufactured using your motor kit?
Our product is expensive for OEM applications. OEMs are normally looking for extremely low price points. Nevertheless, here are some who use Falco Systems.
Terra Trike EVO
Utah Trikes
Santana Tandem

10. Does anyone else on the planet make a controller compatible with your motor?
No. Our controller is embedded inside the motor.

11. Do you know who Eric Hicks is, and why he is not pushing his "double-speed, double-torque" motor anymore?
I know Mr. Hicks very well. I do not know about his products or his business model in great detail. I am Sorry.

Please do let us know additional questions or comments.

Rakesh Dhawan

Rakesh Dhawan
2 days ago

Dear Mr. Nelson,

Thank you for your interest in Falco.

Mr. Harry forwarded this thread to me. I thought it necessary to clarify few points as you have some knowledge about Falco.

I am afraid to say that Your facts are incorrect and outdated about Falco. That Dealer you refer to was a great friend of mine in the UK. I miss him everyday. We were like two brothers from different mothers. We were starting in Electric Bike business and he chose to become a dealer. He was trying to get into electric bike business with little or no resources and no ability to provide after sales support. Also, He and his staff thought they knew a lot about electric bike business and they dictated the specs of how the system should be used in spite of our repeated warnings. We learnt a great lesson. We do not allow that kind of discretion to any of our dealers today unless you are an OEM. When that Dealer faced a medical problem, he chose to get out of electric bike business. That was back in 2013.

Other fact is called Product evolution. Here are some questions for you to think about which could provide you some insight into Falco as a brand, as a philosophy and as a way to engineer.

1. Is BionX still in business?
2. What year did they start?
3. What customers do they have?
4. What problems did they face?
5. How did their product evolve over the years?
6. How many times did Bosch do a recall of their products in Europe?
7. Why Bosch is still in Business?
8. What year did Falco start?
9. What products Falco offered before and now?
10. How has Falco product evolved over the years?
11. What other products does Falco market or sell?
12. And the last but not the least, which company has the highest warranty in the world?

Answer to these questions will lead you to how Falco thinks about Electric Bike industry and how we plan to move forward.

Otherwise, please try not to downplay our tremendous sacrifice, blood and sweat, passion, commitment and entrepreneurship in making a small difference in the electric Bike space.

We have over 150 dealers in the US and several small OEMs. We specialize in converting Trikes, Recumbents, Tandems, Cargo bikes etc.

Our journey, Mr. Nelson has been to stay focused and deliver an extraordinary product to the market. We learn and improve every day and we have a very long list of extremely passionate and committed fans who use their Falco everyday for last several years. These fans know about our tremendous passion and staying power.

We have succeeded in making a difference in the life of countless number of our seniors and we will continue to do so.

I do not wish to sell my product to you or anyone. I do care about making a difference in people’s lives using our technology. That has been our driving force and our greatest passion.

I am happy to answer any additional questions or comments you may have.

Rakesh Dhawan
Falco eMotors Inc.

3 days ago

Harry i don't have a ebike but I have been studying e-assist kits for a Catrike recumbent trike. The recumbent shop where I bought my trike loves the Bionx and has more than he wished he had in stock=expensive paper weights. Falco looks like it would perform similar to the Bionx but the battery isn't proprietary, but they site states the five year warranty is void if you don't use their battery. Falco seems to appeal to the same market as Bionx. My concern is from reading various internet comments, for whatever that is worth, your credit card is charged at the time of purchase and a number of purchasers have experienced several months of delay before delivery. Sometimes all the parts are not in the delivery and it has taken more time to get everything. Utah Trikes recommends the wired display, not the wireless as they experienced problems with the wireless. I've read a couple of complains of controller over-heating but don't know if this is generally a problem or not. The up side is that it is highly programmable, check out Youtube videos, can run up to 28 mph, and has a good torque sensor which is a high priority for me. The down side is I suspect (I am just guessing) Falco is under capitalized and they use current cash coming in on new orders to complete and ship older orders. Additionally the owner is an electrical engineer, the product may be good or not, but I bet engineers are running the company and not someone with business experience. My "guess" is Falco will go the way of Bionx. I like what their website says about the product and apparently how it operates but I don't want to spend $2,200 for a Bionx like paper weight!

Ann M.
3 days ago

Yeah, Rakesh is very sharp and good communicating with customers. I've known him since his days at E+.
And yes, that is an older BionX system. We've installed a couple of these on other recumbents; very easy, straightforward install with good support from BionX. We're all hoping they find a buyer for the company; very messy situation they got into with GM Canada. Enuf! On to happy rides on that bent :)

3 days ago

@Ann, yes me too. As i did the research (hours and hours) It really came down to the only choice. Rakesh is one SMART guy. I had lengthy conversation with him. I am an electrical engineer working for Siemens in the industrial controls business unit. I know motors. Albeit, 3 phase induction motors, not DC motors. He has been refining and perfection this system for many years. There is nothing like it in the industry.
EXPENSIVE! but any other choice would have included compromises I was not willing to make. The open architecture, customization capabilities. 5 year warranty, software, engineering, both torque and speed sensors, on and on and on.

Rakesh is clearly very committed to his ideals. His energy is infectious!

I see a BionX on your avatar. They went belly up. Did they not? That sucks! Their system is quite the opposite of open architecture.

Alex M
5 days ago

Not anymore ;) ...

If budget is a priority or if you live in remote area - stay away from proprietary systems. Ebikes are not bomb-proof and are not going to be in foreseeable future. Replacing generic parts is cheaper in the long run than buying proprietary, and can be less hassle than having a dealer to do it.

I wonder where the OP found all those 5-star reviews. There are no stars in Court reviews, they are neutral. Sometimes even too neutral. And there is always a list of Pros and Cons at the end. When you need to find out more about particular model, there are no reviews anywhere else, other than occasional feedback from members here and short Yutube clips. Endless Sphere is a good source too, but it's more technical.

5 days ago

Hmmm, can you say BIONX? That's what I've got now, unfortunately. People had the same view of that kit before the company tanked, and now if I want to keep the motor I'll have to get the battery rebuilt- maybe not if I want to forgo some functions of the console. I'll take a Bafang BBSHD if I keep my current bike or a Grin kit for the Brompton, thank you. Riding pleasure for me has been based on me being able to diagnose and fix stuff myself, especially since I live in the boonies where most LBSs don't deal with electric motors.

5 days ago

I actually prefer 20" wheels. The fold for 20" wheels is more compact and much simpler.

I actually have a Monty and I've considered a BBSHD conversion, but I've learned to really hate this bike... I'm trying to make peace with it for lack of better alternatives.

I've had problems with the Bionx kit, so even though I've had it for two years my mileage is very low. I was on the forum before with a different gmail account that I forgot the password to- I've even forgotten the user name I used then. I still fight this thing throwing on resistance for seconds after I've applied the brakes, and no bike mechanic knows what's up and I never found a decent Bionx dealer. I was told to override that with the throttle, hehe, but I had it reprogrammed to CA Class 3, so I don't have throttle anymore, bad choice :( Yeah, I feel more than a bit of schadenfreude about what happened to the company...

I thought I had buyers for this damn thing a couple of times, but ABQ isn't a place where people know about e-bikes and I can't sell it for half of what I bought it for, so I'm trying to make it a more comfortable. I'm resigned to folding, unfolding, taking on and off the front wheel four times a day. It sucks. It sucks big.

Normally I have to fold it and roll it inside on my Travoy trailer here at the university, but in the summer I get away with bringing it inside w/o folding it :)

What I do like about it is I can use great tires (Schwalbe Marathon Tour Plus) unlike the fat tire bikes, it's lighter (only 50 lbs) than the fatties, and I seem to be able to ride this on windy days when MrCoffee in ABQ doesn't ride his Rad Rover. I have 28 gears (Paratrooper Pro.) It would make a nice BBSHD conversion, and a straightforward one, too but I have lots of work to do to make this thing comfortable. I just bought Jones H Bar handlebars so that I can ride in a more upright position to prevent my hands from going numb before 5 miles, and I need a seat with springs, as I can't use a seatpost suspension system with my Travoy trailer hitch. I have a bad knee and throwing it over this high frame scares me sometimes, depending on how much it is swollen. I would definitely do better with a smaller folder.

I have to flip the bike, attach the front wheel, unfold, flip the bike, take off the front wheel, fold, etc. so many times a day that I'm getting an upper body workout. I'm resigned to that for now, and I suppose it takes less time for that than going to the gym. I suppose that I hate gyms more than I've hated this bike. I use it more than my car now.

7 days ago

I have a 350W Bionx EVO (s) with the same issue - very little from the strain sensor. Not sure we have the settings right but I can't imagine it being anything but a hardware issue. I had it on BII for 15 mins and the shop said no codes, played with the settings with little or no change. It does work but barely. My EVO HB1 (large) was just stolen - and rode like mad (I had it chipped/unlimited). I got this other EVO (s) off craigs, but it's a small, so I fixed it up for my wife and she's riding it using the throttle. Loves it!

So here's my issue - I have 2 chargers, 2 batteries do I put NEW Bionx kit on her Liv bike?? That's the plan now, it's in the shop waiting a DL350W kit from back east. I like the Bionx system and have "spares" - but... warranty, who knows.


2 weeks ago

The benefit for me is my health. I was (I’m ashamed to admit) 70 lbs less when I rode my non-motorized mountain bike everywhere, stacked with groceries, laundry, whatever. An ebike will make that so much more pleasurable. I will die sooner if I don’t lose this weight. I want to enjoy whatever time I have left, and biking was the only excercise that I really enjoyed, but I lived in a rural area where I wasn’t breathing vehicle exhaust, dealing with heavy traffic, etc. The biggest drag was that I didn’t like non-motorized touring, which will be much more pleasurable with assist!

2 weeks ago

I started out 3 years ago with a BionX HD 500 road bike, an EVO disc brake model with 700C tires. Rode that for about 1 year then transfered the hub drive and battery into a tadpole trike I built over one winter. 1000 km's were put on the DF bike and in the ensuing 2 years another 1500 plus km's on the trike. Since the trike is so comfortable I often go on 40 km rides with litttle to no rider fatigue. After 3 years the bionx will still go 100 km,s or 60 miles to a charge if I keep the assist low and of course pedal as well. And it is mostly flat land around here. And zero maintenance issues. The 2nd ebike is a KHS fat tire bike I installed a Bafang 1000 watt mid drive motor into. That bike now has 1600 plus km's on it. It gets ridden year round, with the qualifer that winter use is on groomed single track trails most of which are 7 km's in length and I ride these 2 times around at a minimum per use. I did make an insulated foam cover for the battery and if the temp drops below minus 10 C I will sometimes slip a chemical hand warmer into the cover. It also has had zero maintenance issues. For the record I am 65 and now retired. Also these bikes are NOT economical to buy, build or operate in the short term. The only way to bring operating costs down is to ride and pile on the mileage. They are cheap to charge up but since each cost $3000 roughly it takes awhile to realize a financial benefit. How ever the benefits of all the cycling is priceless.

2 weeks ago

It has some cool features especially when connected to heart rate monitor, offers turn to turn navigation, gps map plus great analytics after your ride. However i found it still buggy, heart to pair with blue tooth second time around after stop start, mph to kmh conversion and frozen screens. Hope there will be soon an upgrade to fix these issues. Last release was early 2017.

2 years ago

Glad to be a member of this forum. I am a relatively new e-bike convert and am really enjoying the newfound experience as a recreational rider after a long bike riding hiatus.

I have an Bionx S-350DV kit I installed on my upgraded 2009 Marin San Raphael Hybrid. I love the system, but being an engineer I cannot resist making a few tweaks here and there to improve the experience.

One simple improvement is to add a brake inhibitor switch to the second handbrake. It is a common complaint that Bionx omits this feature.

It is a simple plug and play. All you need is this adapter from Amazon:

Of course you also need a second brake inhibitor switch: and magnet:

Brake sensor installation is detailed here: as item 6.

Note that this is only for the 'Standard' type brake inhibitor. If you use the optional 'Reversed' type, I do not believe it will work without modification. Check with your dealer if you are not sure which type you have.

Barry Brown
3 months ago

The display screen is so far away when seated that I can’t imagine trying to see what was on it or to touch it to change displays. Also, what is the range using electric power alone?

Laura Elkins
3 months ago

Thanks for the great review :-) You always do an excellent job with bikes and Trikes :-)

Walter Sudymont
4 months ago

I have an excellent idea involving the drive train. If you are interested it talking with me I would require a non disclosure agreement. When you see it you will completely understand. I bet you slap your forehead. Walt

12 months ago

That motor is really quiet.

Dale Wildey
1 year ago

That motor is very quiet. That's important when your riding position puts your head close to the rear wheel. Also stealthy for trail riding. Thanks for the video

Zachary Mohrmann
2 years ago

What a weenie...!

Noelle Hoppe
2 years ago

how much does this cost? where are they sold? who does aftermarket? would this work on my Sun Easy Tri Classic? how long do they last? what kind of warranty is there? I would like to know???

Ben Ling
2 years ago

Off topic here, but did you try any sharp turns on the Catrike? I like the general feel of their trikes, but I find that their direct steering gets stuck when turning sharply. It feels like they need to change the angle of their head tubes. A KMX I've ridden, also with direct steering, did not have the same problem. Thank you for these videos!

3 years ago

I've got an Expedition as well.
This seems pretty good for when I've got to pull my 70lb sound system up the hills in ABQ.


4 years ago

I have two additional comments. and one question  1)  I love the shave club advertisement prior to the video, very funny.  2)  I have a Golden Motors 29" 1000 watt gearless rear hub motor and it keeps breaking spokes.    I believe it is because the kit is a lower priced kit and the spokes are too long.  I have a 26" kit and it does not breaks spokes.  When are you doing a review on Golden Motors.  Good morning.

4 years ago The spoke nuts are coming off the spoke!  How is that happening?   I am 100 miles  (almost exactly) north of HPC.  I live in Bakersfield.  There is a Golden Motors dealer in Bakersfield which also sells two and four seat quad cycles.  I am sure he would welcome you.  You can test drive my bikes anytime you want.  they would be a good comparison to all the factory bikes you review.
4 years ago

Hmm, I've heard of some other bikes breaking spokes as well. Might need thicker gauge or eyelets and better fasteners or something, some lock tite could help if they are coming loose but if they are just snapping then it sounds like they aren't strong enough. I'd like to review a Golden Motors system, just have to find one in real life! Where are you at again? Maybe I can test ride yours :P

4 years ago

I know you put in a lot of work in all of these videos so thank you for your effort but how fun is it to ride all of these Ebikes and Etrikes?   Trikes are cool.

4 years ago
I will be watching!
4 years ago

+nebula722 Thanks! More reviews on the way... heading to California next month to see the new IZIP, Haibike, Easy Motion and Pedego stuff :)

4 years ago

+Electric Bike Review I think it must be fun.  FYI I have posted under the name of Zed in the past.  I am having fun watching your videos and the videos of people riding their trikes in foreign countries.  I appreciate your efforts.
4 years ago

Ha! Yeah... it's pretty awesome to see the new stuff and I speak directly with shop owners and sometimes the actual product managers and management teams at ebike companies so I've learned a lot and I try to pass that on while also providing honest feedback. The recumbent trike design is very cool and more efficient than upright bikes due to the aerodynamic nature of reduced frontal surface area.

Zed Bowman
4 years ago

I enjoy watching your reviews..I have a Terra Trike Rambler 24 speed.  I equipped it with a Golden Motor 1000 watt 29" wheel kit powered by a 48 volt battery.  The kit came with throttle control with cruise control.  Due to neurological damage I no longer drive and this Etrike and my Ebike keep me mobile.  My Terra Trike is not very stable going around corners otherwise I enjoy my Terra Trike.  I even attach an InStep trailer and take the dog on rides.

4 years ago

I'm back into my 'decision' stage, between the "Bafang-8fun" mid-drive, and the "BionX S 350 DL" do you have ANY suggestions or ideas that may help? I like good customer service, and I know "BionX" is sorely lacking in that department, still I know "BionX" has 'regenerative braking' and "Bafang" does'nt. I also have many steep hills where I live. Any theories, ideas, or opinions? Help!

10 months ago

ride the trike while you talk its annoying,you only ride for 1 minute and talk 15

4 years ago

+Electric Bike Review Thank you.
4 years ago

+Taggerung No worries :)

4 years ago

+Electric Bike Review Sorry to ask such a silly question. The answer was on the review you linked to. So I was right in saying it was in your review, and I just missed it.
4 years ago

+Taggerung I'm less familiar with their battery pricing to be honest. They have several sizes which are listed back in the full review here: and the v is the top end which stands for very large :)

Freddy Ulvseth
4 years ago

Hi, that mount for the throttle at 2:32, is that a part that cam be bought sepratly or was it there? I have anbike almost like that and that throttle mount was something for me :-)
4 years ago

+Freddy Ulvseth Awesome, I hope you get an answer because I'm curious as well :)

Freddy Ulvseth
4 years ago

Great, perfect.. Thank you.. I´ll email them on that adress :-)
I will let you know if we find that part ;)

Best regards
4 years ago

+Freddy Ulvseth Hi again Freddy, I just emailed a contact at BionX and they provided this address to use for asking your question about the display panel: I'd love to hear what they say when you reach them!
4 years ago

+Freddy Ulvseth Hmm... I wish I would have looked more closely. I'd suggest reaching out to BionX and including a link to this video. Just explain that you're looking for a solution to mounting the throttle as you see here, maybe also send this email to me using the EBR contact form back at the site and I can forward it to try and get some attention from their lead tech.

Freddy Ulvseth
4 years ago

ok, mine was delivereds with no mounting holder, I could thread it onto the handle bars, but yours seems to have a 90 degree fixing under the gear handler where the throttle is mounted.. ;)

John Zoccano
4 years ago

Sorry but i thought id point out something...i heard the spokes "ping" as you were driving..either they were loose or just not strong enough...
4 years ago

I think that might have been the disc brake rotor touching the pads as I increased speed and strained the frame.

John Zoccano
4 years ago

How much is the kit?...i find BionX very expensive..
4 years ago

Hi John, I post prices back in the reviews (since it's easier to keep updated there) and I link to them from the description of each video. You're correct that BionX tend to be more expensive. The S 350 kit ranges from $1,999 to $2,500 depending on the battery pack configuration you choose:

Ali Alsouaijet
4 years ago

How many bikes do you have
4 years ago

+Ali Alsouaijet Sure thing, doing my best out here. Always appreciate the feedback and support!

Ali Alsouaijet
4 years ago

Cool and thx keep up the great videos:)))
4 years ago

Hi Ali, I personally own one electric bike. The way I get all of these reviews is by traveling around to conferences and bike shops. I tried this kit in Toronto Canada at the BionX headquarters earlier this year :)