BionX PL 350HT Electric Bike Conversion Kit (Discontinued)

The PL 350 uses the award-winning BionX high-torque, direct-drive motor for great overall performance. Efficient with no motor noise. Almost any bike can be an electric bike.

This product has been discontinued.


Almost any bike can be an electric bike with a BionX Electric Bike Conversion Kit.

The PL 350 (Freewheel compatible only) uses the award-winning BionX high-torque, direct-drive motor for great overall performance. Efficient with no motor noise.

Kits are available with 20″, 26″, and 700c wheels, and the option to mount the battery on either the bike frame or on a rear rack. (You can pick which of these kits when you choose your options.)

***Please Review the Warranty Tab for Special Warranty and Return Conditions Before Purchasing

Frame-mounted batteries optimize the system weight distribution for better overall balance, while rack-mounted batteries can be mounted to almost any bike.

Kits with a 60-cell battery offer 50% more range than the kits with a 40-cell battery (available only on rack-mounted kits).

With the 60-cell battery, expect an average range of about 40 miles if you are pedaling and the bike is assisting you, up to 60 miles if you do more of the work, and about 19 miles if you depend mostly on the battery power.

Your BionX powered bike feels familiar, because it’s the same bike you had before, but with a natural boost to your own pedal power. You determine how much of a boost the system will give you.

Regenerative braking and generation modes let you recharge the batteries while you are riding the bike. These mode can help extend the range of a battery charge, or to give you a better cardio workout — if you’re into that sort of thing.

Includes black rim and silver spokes.

Compatible with ISO standard threaded freewheels (not included). If your existing bike has an ISO thread-on freewheel, you can use it with your BionX kit. If your bike has a freehub and cassette, you will need to acquire a thread-on freewheel for your bike.

If you have non-vertical dropouts on your bike, you will need a BionX Axle Collar Puller Tool to adjust the BionX axle properly.

Bikes with drop bars may require the alternate BionX Inverse Magnetic Brake Switch to properly engage the brake/regenerative mode.

For a lighter weight economical system, check out the BionX PL 250 Electric Bike Conversion Kit.

  • Black Rim with Silver Spokes
  • Rear rack is included with kits with rack mounted battery
  • Uses your bike’s existing cassette
  • Proportional assistance adjustable from 35-300%
  • Programmable anti-theft alarm, odometer, battery charge gauge, energy transfer gauge, and an optional throttle
  • Battery life of approximately 800 cycles
  • Throttle lever assistance option included
  • Installation is 30 mins or less on most bicycles. See Installation video
  • Easily lockable and removable battery pack
  • Regenerative braking (resistance is applied and battery charges during braking)
  • Both rim and disc brake compatible
  • Threaded hub for use with 6-, 7-, 8-, 9- or 10-speed freewheels
  • Motor: G1 350 Watts
  • Torque (normal/max): 9/40 Nm – 6.6/29 lb-ft
  • Battery:60-cell option: LiMn / 37V / 9.6 Ah40-cell option: LiMn / 37V / 6.4 Ah
  • Range*:60-cell battery: 56 miles / 90 km40-cell battery: 37 miles / 60 km*Average based on one battery charge, using assistance mode level 1, according to use in ideal conditions. Distances will vary depending on road conditions, riding surface, cyclist weight and assistance required
  • Weight:40-cell Rack Mount Battery: 16.8 lb / 7.6 kg60-cell Rack Mount Battery: 18.8 lb / 8.5 kg60-cell Frame Mount Battery: 18.5 lb / 8.4 kg
    Please be aware of the Following Special Conditions Regarding Issues with BionX orders:

    For returns on BionX kits due to shipping damage, incorrect items or no longer needing the order, we can ONLY process the return within 3 business days of the order being received. Because BionX kit shipments are HAZMAT due to the Lithium Ion batteries, they can only be returned as a customer refusal.

    Once the shipment has been received and 3 business days have passed, the customer is responsible for all costs of returning the shipment to, even if the reason is because of shipping damage or an incorrect order. Return shipping for most customers is very difficult and expensive because the shipment must be returned through a certified HAZMAT shipper that services consumers. These are few and far between.

    Please do not order this product if you cannot verify that the shipment and product are up to your standards and usable for your purpose within 3 business days of receiving it.

    For warranty issues there are multiple conditions that you should be aware of.

    1. Prior to shipping all BionX kits, we do the following to insure that your kit is as trouble free as possible:- Charge the battery- Hook up the battery to the motor and the console- Make sure that the motor runs.- Make sure that the battery is fully charged.- Make sure that the console functions properly.

    2. Because of BionX warranty restrictions and the problems with shipping a BionX kit, all warranty issues of BionX kits purchased from must be diagnosed and processed through a BionX dealer in your area. It is the customers responsibility to locate an active BionX dealer through the BionX dealer locator. If you are able to deliver your BionX kit in person to we can service your warranty as well.

    3. Authorized BionX dealers will charge you for diagnosing and handling the processing and shipping of your warranty, even if it is involving a brand new product. (BionX will cover the actual shipping charges associated to a warranty) There are no specific rate charts that an authorized BionX dealer is held to. We strongly recommend discussing these costs before having an authorized dealer service a warranty.

    4. If you are having a bike shop install your kit, we strongly recommend working with an authorized BionX dealer. If a non-authorized dealer discovers an issue with your kit, you will end up paying both the non-authorized dealer and an authorized dealer for assistance with sorting out any warranty issues should they come up.

    5. Any damage to the kit caused by a customer or non-authorized dealer installation of a kit is not covered under the BionX warranty.

    BionX’s Warranty Policy

    All components, except the battery are covered against manufacturing defect for a period of two (2) years from date of purchasing.

    The battery is covered against manufacturing defect for a period of one (1) year from date of purchasing.

    Warranties are limited to replacement of parts and/or products determined by BionX, at its sole discretion, to be defective.

    BionX Limited Warranty does not cover or apply to the following: normal wear and tear; any damage, failure and/or loss caused by accident, shipping, misuse, neglect, abuse and/or failure to follow instructions or warnings as stated on the product or in the applicable BionX User Guide or other printed materials provided with the product; damage, failure and/or loss caused by the use of the product for stunt riding, ramp jumping, competition, acrobatics, trick riding or other similar activities, or use in any other manner for which such products were not specifically designed.

    This warranty does not apply to any products or components, mechanical and/or electrical, which have in any way been altered from their original configuration by any person. BionX will not be liable and/or responsible for any damage, failure or loss caused by any unauthorized service or use of unauthorized parts.

    The BionX Limited Warranty does not cover or apply to any BionX product used for rental or commercial purposes unless the specific product is authorized by BionX as acceptable for rental or commercial use.

    The BionX Limited Warranty does not cover or apply to any BionX product sold by a non-authorized reseller or retailer.

    The BionX Limited Warranty does not cover or apply to any replacement, maintenance or accessory parts not sold directly by BionX to the original retail purchaser.

    WARNINGNorth America and Europe have different legislation in regards of bike electric drive systems. Please note that BionX will not be able to service a system bought in a country and delivered, exported or moved to another, if the local legislation differ from the one from the country of origin.