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Avenger 85 Motorized Bicycle Engine Kit 36 Tooth with Free Shipping

Avenger 85 Motorized Bicycle Engine Kit 36 Tooth with Free Shipping

Regular price $199.00 USD
Regular price $225.00 USD Sale price $199.00 USD
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Sprocket Size

36 Tooth Rear Sprocket for Higher Top End Speed.

44 Tooth also available.

Engine is fully Assembled. 


Avenger 85 Engine Highlights:

  1. The Avenger 85 engine boasts a 52mm bore and 40mm stroke, providing a genuine 85cc displacement.
  2. Enhanced cooling is achieved through additional surface area of cooling fins on the cylinder.
  3. The cylinder head features an expanded cooling area for improved heat dissipation.
  4. Transfer ports are enclosed with generous radius, contributing to enhanced mid-range power.
  5. The intake port opening is increased and comes with a new intake manifold to ensure proper sealing.
  6. The exhaust port has been widened with a broader 52mm bolt spacing.
  7. A single-ring, lightweight piston design is incorporated to boost power output.


This kit is designed for Private Road and Closed Course only. 

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