66cc/80cc 2-Stroke Bicycle Engine Performance Upgrade Kit- Parts Only

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FREE SHIPPING to Continental US

Exhaust Color: Chrome
Manifold Size: 30mm
Boost Bottle Color: Black
Sale price $152.09 Regular price $168.99


If you're looking to take your 2-stroke bike engine kit to the next level, feast your eyes on the 2-Stroke Performance Upgrade Kit from BikeBerry! Assembled with riders in mind, this kit will give your motorized bike more torque, more power, and a smoother ride. The BBR Tuning Boost Bottle and Boost Intake Manifold will give you a boost of horsepower while evening out your idle to prevent over heating. The Speed carburetor and Expansion Chamber will get you more horsepower and help your torque on flatland and hills. The 3-prong spark plug will give you better, more consistent spark than your stock plug and the Performance spring idler will give you a consistent tension on your chain. Take the guess work out of upgrading your engine, we've assembled everything you need to get your motor running faster and smoother than ever.

Package Includes:

1. Expansion Chamber

2. Speed Carburetor

3. BBR Tuning Single Boost Bottle Induction Kit

4. 3-Prong High Performance Spark Plug

5. Performance Spring Idler

6. BBR Tuning Boost Intake Manifold

Disclaimer: Operating a motorized bicycle and/or bicycle engine kit carries a risk of serious bodily injury. The rider accepts responsibility for any and all vehicle operation that may lead to personal injury, economic loss, social distress, other losses, costs and damages. BikeBerry.com 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. Therein lies a discrepancy between measuring standards by the manufactures in China with those in the United States. However, all "80cc" engine kits on the market today are actually 66cc in displacement size if measuring by US standards.

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