ATHENA TOP END PISTON KIT; YAMAHA 65 YZ 18-23

Refresh your 2-stroke engine with the ultimate all-in-one rebuild solution. This premium kit perfectly pairs a high-performance cast piston with a precision-engineered top-end gasket set, taking the guesswork out of your next rebuild. Crafted from a specialized, high-silicon aluminum alloy using state-of-the-art CNC machining, this piston delivers OE-level reliability with enhanced durability and optimized flame propagation. Paired with Athena's legendary gasketsfeaturing advanced surface treatments for a flawless seal under extreme pressurethis kit ensures your bike runs smoother, cooler, and faster. Take back your lost compression and experience race-ready performance straight out of the box. Complete all-in-one top-end rebuild kit saves time and hassleConstructed from a specialized high-silicon aluminum alloy for maximum heat resistance and strengthMolybdenum disulfide coated piston skirts drastically reduce friction and internal wearPrecision CNC-machined for perfectly smooth profiles and optimal flowGaskets feature proprietary surface treatments and stress-relieving processes for unmatched sealing reliabilityIncludes: Cast 2-Stroke Piston (Domed Head)Piston Ring (1)Biconical Piston PinCirclipsComplete Top End Gasket KitPiston Size: 43.44mm (Also available in 43.45 mm and 43.46 mm for exact cylinder matching)Pin Dimensions: 12x35x8mmCompression Height: 24.0mm.