80cc Bike Engine Kit with Free Upgrades

Transform your ordinary bicycle into a powerful ride with our 80cc Bike Engine Kit. This DIY 80cc 2 Stroke Motorized Bicycle Kit is designed for riders who want a straightforward bicycle engine kit for commuting, hobby builds, and custom conversions.

New for this kit:

• One-Piece Crank
• Speed Carb
• 4 Bolt Chain Tensioner
• Upgraded Hardware
• 41T Sprocket (Faster)
• Motorcycle Style Throttle Cable
• Slant Head for More Clearance and Higher Compression

Fits most 26" wheel bikes, including mountain, cruiser, chopper, and road bikes with a V-frame.

Includes easy-to-follow online installation instructions to help with your motorized bicycle build.

Download General Instructions Here

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 at their discretion and assumes motorizedbike.parts is not liable for any injury or legalities