Piston rebuild kit 40mm diameter. Fits the 43-47cc 2-stroke engines used on pocket bikes, gas scooters and many other applications.

Kit includes piston, piston rings, wrist pin, wrist pin bearings, and C-clips.

Note: Please measure your wrist pin size before ordering to assure the correct part is ordered.
The 40mm piston use the 10mm wrist pins.