ECCPP New Cylinder Piston Ring Gasket for Honda Z50 Z50R XR50 CRF50 50CC Dirt Bike Pit Bike Compatible fit for Cylinder Piston Kit CYLINDER PISTON RING GASKET - Compatible fit for 1969-2008 Honda CRF50F XR50R Z50A Mini Trail Z50R Z50RD ZB50 FUNCTION - Cylinder piston set is the heart of engine. ECCPP Cylinder has been factory honed and deburred to help your new top end work efficiently and is solid cast iron and a black powder coat has been added to give the Cylinder OE part look BEST FEATURE - ECCPP Replacement piston sets engineered from premium materials to provide exceptional service life and reliability. Pistons gasket kit with precise density to provide a reliable seal with minimal tightening. We only uses high-quality cast-iron to satisfy the tough demands, they are the superior choice when building a professional racing engine PART NUMBER - E05104CP303S WHAT INCLUDED - Cylinder,Piston,Rings,wrist pin,circlips,Gasket set. One year limited warranty