* OEM Kit Includes: Piston (Orange; Size B), rings, wristpin, wristpin bearing, circlips, inner head o-ring, outer head o-ring, base gasket, front cover gasket, RH side cover gasket, power-valve O-ring x2, head washers, exhaust seal x2
OEM Yamaha reference for Cylinder/Piston sizes and piston-to-cylinder clearance.
Warning- If you are reusing your cylinder, measure the diameter of the cylinder in order to match the correct piston size for optimal performance. Over time, the cylinder diameter will increase as it is being used. If the cylinder is over the maximum diameter size, it is highly recommended to either replate the cylinder or purchase a new one.
Cylinder (A)- 66.400-66.402 mm (2.61417-2.61425 In) Cylinder (B)- 66.404-66.406 mm (2.61433-2.61441 In) Cylinder (C)- 66.408-66.410 mm (2.61449-2.61457 In) Cylinder (D)- 66.412-66.414 mm (2.61465-2.61472 In)
Piston Red (A)- 66.352-66.355 mm (2.61228-2.61240 In) Piston Orange (B)- 66.356-66.359 mm (2.61244-2.61256 In) Piston Green (C)- 66.360-66.363 mm (2.61260-2.61272 In) Piston Purple (D)- 66.364-66.363 mm (2.61276-2.61287 In)
Piston-to-cylinder clearance- 0.045-0.050 mm (0.0018-0.0020 In)
OEM Manufacturer part #B4M-K750A-V0-00
Description
The Yamaha Complete Top End Rebuild kit includes everything you need to rebuild your top end. All parts included are genuine, OEM parts for optimal performance.
