Cylinder Big Bore 50cc Upgrade to 80cc (70mm Valve length) kit
Boost your GY6 50cc scooter to a 80cc with this bolt on kit. Everything you need and
Upgrade Kit 47mm cylinder, up to 80cc
- Assembled Cylinder Head for stock machines that have a 70mm Valve Length.
- 47mm Piston Set With Rings & Wrist Pin.
- Rocker Arms assembly,
Exhaust Studs included with Factory Style Nuts, Head gasket set and a Spark Plug. -Free EGR Blocking Plates.
*This kit will fit 50cc motors with a 70mm Valve length
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 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.