Scooterworks Big Bore Kit (63mm, 180cc); GY6 150

Scooterworks Big Bore Kit (63mm, 180cc) for 150cc GY6 engines. Upgrades to 180cc based on a stock stroke of 57.8mm!

Original Parts For Scooters SKU 164-310

NOTE: You may need to modify your engine case to accommodate the larger cylinder; the engine boring tool is available online (SKU 202-37).

Specifications:

• Includes cylinder, piston, pin, circlips, rings, head gasket and base gasket
• Upgrades to 180cc
• Bore: 63mm
• Overall Height: 90.5mm
• Cylinder Sleeve Outer Diameter: 64.9mm

Compatibility:

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.