BionX S350 48V, Next-Generation Lightweight Motor Kit

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BionX S350 48V, Next-Generation Lightweight Motor Kit

The new BionX motor series features the choice between an 8.8AH or a massive 11AH battery paired with a cassette motor wheel! Cassette motors accommodate 8-10 speed SRAM and Shimano cassettes.

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+No tax outside NY State
Currently Not Available
  • Top quality
  • Rear wheel motor
  • Clear display
  • rack battery option
  • Pulls serious weight
  • Fits most bikes
Top quality1 Rear wheel motor2 Clear display3 rack battery option4 Pulls serious weight5 Fits most bikes6

The new BionX motor series features more battery option. Choose the standard 8.8AH for medium-range or the massive 11AH battery to take your ride even farther! All kits feature a cassette motor wheel, which will accommodate 8-10 speed SRAM and Shimano cassettes.

Bionx S350DX/DV/RX features:

  • Fits 8/9/10sp Shimano/SRAM cassettes
  • 48 Volt Lithium battery for better response and power transfer
  • New G2 console has built-in security to prevent theft
  • Cassette motors are compatible with Shimano/SRAM cassettes up to 10 speeds.

Bionx image

The S350 is one of the best electric bike motor kits around. It has all of the same great features as the standard BionX systems like torque-sensitive pedal-assistance, a powerful throttle, and regenerative braking. Now lighter than ever, it is a breeze to convert your bicycle to an electric bike.

More Info on Bionx Systems:

Intro to BionX
What is in that BionX box?
BionX Installation guide
BionX Commonly Asked Questions
Fitting the kit to your bike

The Bionx Warranty



Bionx S350 Lightweight Motor kit
Maximum Speed:20mph
Torque:10 Newton-meters/32 peak
Weight:16.1 lbs total for Down Tube system. 18.9 lbs for rear rack system
Motor Type:Direct drive cassette generative wheel motor (gearless - brushless)
Motor Power:350 watts/700 watts peak
Cassette Compatibility:Cassette motor - Shimano/SRAM cassettes up to 10 speed. NOT 11 speed compatible
Battery:48 volt L-ion battery
Battery Dimensions:8.8AH and 11AH downtube batteries - 13 x 7 x 3.5 inches
Charger:Li-ion Bionx charger

Reviews & Questions


All products are built and tuned up / checked prior to delivery or pickup!

Choose how you order

  Over the phone
  In Store
Request for in store pick up or shipping with any method

We can ship all products to any of the 48 Continental U.S. states and certain items to Canada and other states.

  Professionally built
  Professionally tuned
  Professionally repackaged

After unboxing you can

  Ride your bike or scooter*
  Register Warranty
  Watch our instructional videos
*Due to shipping some small parts may need to be adjusted, filled with air, or installed after delivery.


At NYCeWheels we proud ourselves on our reputation to help you choose the correct product, provide you with the best customer service, and get you back on the road as soon as possible on your bike or scooter.

You can reach us weekdays 11am-7pm, Saturday 10am-6pm and Sundays 11am-5pm (Estern Standard Time) via phone email or chat.


At NYCeWHEELS we try to make your transaction as smooth as possible. For this reason, we accept all major credit cards, (Visa, MasterCard, Discover, Amex), Checks, and even Paypal where you can now use Paypal Credit as a form of payment for your purchase!

PRO tip: ask for our Freedom to ride financing program for in-store purchases