Upgraded Bicycle Engine Only

In Stock Ready to Ship!

This Motor will need to be assembled partially. The Top end will need to be mated to the bottom end!!

THIS New Upgraded 66cc/80cc 2 STROKE BIYCLE MOTOR LOOKS SIMILAR TO OTHERS THAT ARE SELLING ON OTHER WEBSITES.  BUT THIS IS A NEW GENERATION  2 CYCLE ENGINE WITH MANY IMPROVEMENTS AND ENHANCEMENTS WHICH MAKE IT STRONGER, MORE POWERFUL AND MORE DURABLE.

SO WHATS THE DIFFERENCE?

THE MOST IMPORTANT PART OF ANY ENGINE IS THE CRANKSHAFT!

Our competitor's engine has a unbalanced, 3 piece crank  with open, unsealed bearings and bolted on weights.

Our crank shown on the right is a one piece, factory balanced 40mm crank with sealed japan bearings.

So, what's the difference?

The 3 piece crank starts to vibrate unbearably at 20mph, to a point where your hands hurt from the punishment of having to hold on to your  handlebars.

Our one piece cranks, however, maintain low vibration at screaming fast speeds!

 Upgraded Hardware 

 Slant Head- More Clearance and Higher Compression! 

 PACKAGE INCLUDES
1. Silver or Black Motor 80cc 2-Stroke
2. High Quality Sealed 202 Japanese Main Bearings
3. High Quality Needle Bearings on Both Ends Crank
4. Magneto
5. GRADE 8 Engine Hardware
6.40mm intake cylinder head

FITS MOST 26" WHEEL BIKES (MOUNTAIN, CRUISER, CHOPPER, ROAD) WITH V-FRAME.

Disclaimer: Operating this motorized bicycle and bicycle engine kit involved some risk of serious bodily injury. Buyer accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. Seller is not responsible for injuries and/or damages resulting from operating this motorized bicycle or bicycle engine kit.

Disclosure of accurate engine size: While we have chosen to use the long standing factory branding engine size of "80cc", the true displacement of the bicycle engine is 66cc. Down through the years China bicycle engine manufactures have advertised their biggest engine as 80cc, therefore we have listed them in the same way on our website. However, the bore and stroke of an 80cc being 47x38mm equals 66cc. Therefore the true displacement of the 80cc bike motor is 66cc. In the west, the volume of a cylinder is calculated by using the formula Volume = Pi x Radius Squared x Stroke. However,in the east the displacement of an engine includes the area of the cylinder head's combustion chamber as well as the volume of the cylinder. As such, there lies a discrepancy between measuring standards by the manufactures in China with those in the United States. As such, all "80cc" engine kits on the market today are actually 66cc in displacement size if measuring by US standards.

Our gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.