GY6 150cc 57.4mm Cylinder Kit

57.4mm Cylinder Kit for GY6 150cc Engines

This cylinder kit is a replacement cylinder and piston set for 150cc GY6 4-stroke engines. It can help bring back lost compression or enlarge engine displacement for stronger output. It belongs to our range of GY6 150cc scooter parts and comes with the pieces needed for a full fitting. Check the bore size and engine code before ordering to confirm it suits your engine.

Purpose of This Part

Most people fit this kit when the original cylinder or piston has become worn and the engine is losing power. It is also an option for riders who want more output from a big bore conversion, though that setup may call for extra changes such as re-jetting.

Specifications

• Bore: 57.4mm
• Overall Height: 90mm
• Cylinder Sleeve Outer Diameter: 60.7mm
• Piston Pin Diameter: 15mm
• Piston Pin Length: 42mm
• Fits: GY6 150cc 4-stroke engines (QMI/QMJ 152/157) with 57.4mm bore, various unlisted makes and models

Compatibility

Fits:

• GY6 150cc 4-stroke engines (QMI/QMJ 152/157)
• Various unlisted makes and models

How to choose: Before purchasing, make sure your engine has a 57.4mm bore and a piston pin measuring 15mm in diameter by 42mm in length.

Browse further: GY6 150cc Scooter Parts (157QMJ) · GY6 Scooter Parts · Scooter Big Bore & Cylinder Kits · Scooter Parts