3000 / 5000 Watt Motor 190 dropout (Super73 S-2, R, RX)

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  • Regular price $850.00
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Build a fast e-bike/moped with this kit. This is the correct dropout for the S-2 and R/RX frames. A 72 volt battery is required to power this motor (choose 20 ah or 30 ah). Max speed?  (Reported from the field: 59+mph on a 20 x 4 fat tire bike.)

  • QS 72V 5000W bldc motor
  • 20"x 4.0 Double-wall alloy rim to fit Super73 and many other fat tire ebikes.
  • 72V 100A sabvoton controller with brake light wire
  • Alarm / Bluetooth Adapter / PAS / TFT UKC1 colorful display
  • 2 electric brake levers (power off from both)
  • Two Torque Arms
  • Twist Throttle
  • 190 Dropout
  • Fixed Gear

Finish your build like a pro with colored wire wrap! Professionally organize your wiring with a variety of colors.

Note 1: Obviously, this sort of modding to any stock bike will not only give you warp speed, but will warp your manufacturer's warranty.  That's a risk you are accepting. Be smart: use a full face helmet and maybe even a jacket with some armor, and gloves - definitely gloves. Don't ride where you will annoy people or might cause an accident. Riding a bike frame at high speeds carries risk of bodily harm or death and you understand and are assuming that risk. Be safe and have fun!

Note 2: This is not "plug n play" modding. The slide-in axle tabs for the stock RX are too small to fit the axle on this motor and will require a machine shop to mill out a few millimeters all around to fit the new axle. On the RX, the large 72 Volt Battery required for this motor will not fit in the space below the top bar but can be mounted against the down tube. (It will fit okay on the S-2.) The controller that comes with this system also will need to be mounted either in the frame or under the seat. This is a fun project, but not a paint-by-the-numbers kit.

Orders fulfilled by our friends at MER. Allow 2 weeks for handling & shipping. NO RETURNS.

Add the required 72 volt battery and save $50 on the combo for the 20ah battery or save $100 on the 30 ah battery.

Add the battery and a custom RX enclosure kit fabricated at MER with your choice of color powder coat and save $100 on the whole kit plus free shipping in the continental United States.