ATHENA TOP END PISTON KIT; YAMAHA 250 WR-F / YZ-F 08-13

Breathe new life into your 4-stroke enduro engine with Athena's Forged Top End Piston Kit. Built for riders who push their machines to the limit, this complete rebuild kit combines a precision-forged piston with Athena's premium top-end gasket kit to deliver race-proven durability and reliable performance. Manufactured using a reverse extrusion forging process and precision CNC machining, the piston offers exceptional strength, superior heat resistance, and consistent power delivery, while premium Japanese piston rings and Athena's advanced gasket technology ensure outstanding sealing and long-lasting reliability. Complete top-end rebuild kit featuring a forged 4-stroke piston and premium gasket set Reverse-extruded forged aluminum piston for superior strength and durability Precision CNC-machined for OEM-quality fit and dependable performance Premium Japanese piston rings with wear-resistant coatings reduce friction and extend engine life Forged side relief skirt design promotes smoother operation and improved longevity Advanced gasket materials provide dependable, leak-free sealing under demanding riding conditions Includes: Forged 4-Stroke Piston Piston Rings (3) Piston Pin / Wrist Pin Circlips Complete Top End Gasket Kit Piston Size: 76.97mm Displacement: 250cc Compression Ratio: 13.5:1 Piston Type: Forged Engine Application: Enduro Skirt Design: Forged Side Relief Compression Height: 22.30mm Piston Pin: Standard Big End Pin Diameter: 16 x 10 x 42mm.