Cylinder Big Bore 50cc Upgrade to 100cc (70mm Valve length) kit

Regular price $199.00 Sale price $79.95



Boost your 50cc scoot to a 100cc with this bolt on kit. Everything you need and

Kit Includes:

- Assembled 50mm Cylinder Head upgrade for machines with stock 70mm Valve Length.
-A9 High output racing cam
- 50mm Piston Set With Rings, Wrist Pin & Cir clips.
- Upgraded Rocker Arms assembly, 
-Exhaust Studs
-Includes Exhaust gasket and Factory Style Nuts
-Spark Plug 

Made in Taiwan

Legal Disclaimer: This product is intended for off-road, non-street, or to be used on racing vehicles on closed courses only. Use of non-approved products may void your vehicle warranty. Improper installation or use of some products can cause serious bodily harm, injury and/ or death. Check with local laws before ordering. Some products may accelerate wear. Use these products at your own risk.

PERFORMANCE PARTS affect how your engine and all its parts run. Performance parts should always be installed by a certified technician.

*STATE OF CALIFORNIA: Our products are "Race Only" products and are not designed, intended or legal for use on any pollution controlled motor vehicle, device or system.