TOP END PISTON KIT; YAMAHA 250 WR-F / YZ-F 16-18

Breathe new life into your 4-stroke enduro engine with Athena's Forged Top End Piston Kit. Designed for riders who demand maximum performance and long-lasting reliability, this complete rebuild kit pairs a precision-forged piston with Athena's premium top-end gasket kit for a seamless installation and race-ready results. Manufactured using a reverse extrusion forging process and precision CNC machining, the piston delivers exceptional strength, superior heat resistance, and smooth power delivery, while premium Japanese piston rings and Athena's advanced gasket technology provide outstanding sealing for confidence in every ride. Complete top-end rebuild kit featuring a forged 4-stroke piston and premium gasket set Reverse-extruded forged aluminum piston for exceptional strength and durability Precision CNC-machined for OEM-quality fit and reliable performance Premium Japanese piston rings with wear-resistant coatings reduce friction and extend engine life Optimized piston design promotes efficient combustion and smooth, consistent power delivery Advanced gasket materials provide dependable, leak-free sealing under demanding riding conditions Includes: Forged 4-Stroke Piston Piston Rings (2) Piston Pin / Wrist Pin Circlips Complete Top End Gasket Kit Piston Size: 76.96mm Displacement: 250cc Compression: 13.5:1 Piston Type: Forged Compression Height: 20.20mm Piston Pin: Standard Big End Pin Diameter: 16 x 9.5 x 38mm.