Yamaha Complete Top End Rebuild Kit

Details

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.

• OEM Kit Includes: Piston, rings, wristpin, circlips, wristpin bearing, head gasket, base gasket, exhaust gasket.
  
  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 Bore- 39.993-40.012 mm (1.5745-1.5753 In)
  
  Cylinder Taper Limit- 0.050 mm (0.0020 In)
  
  Cylinder Out Of Round Limit- 0.050 mm (0.0020 In)
  
  Piston- 39.952-39.972 mm (1.5729-1.5737 In)
  
  Piston-to-cylinder clearance- 0.034-0.047 mm (0.0013-0.0019 In)