ALL YEARS RHINO/RAPTOR/GRIZZLY 660 BIG BORE 102MM TOP END KIT CP PISTON, COMETIC GASKETS, OEM CYLINDER. Build your engine only once not 2 or 3 times. This is a OEM Stock Yamaha Cylinder that I Cleaned/Sand Blasted/Bored to Piston Spec's, this is the correct way to rebuild your Rhino, Raptor or Grizzly 660 and not have a problem.
I can help with a boring your Cylinder if needed. Yamaha OEM Cylinder Big Bore102mm 686 Kit. CP Piston 11:1 (Rings, Pin, Clips). Cometic Complete Top End Gasket Kit. Cylinder is a Japan Stock OEM that I cleaned, Sand Blasted, and Bored to CP Piston Spec's.