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. Designed for riders who demand championship-level performance and long-lasting reliability, this complete rebuild kit combines a precision-forged piston with Athena's premium top-end gasket kit for a seamless installation and dependable 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 in the most demanding conditions. Complete top-end rebuild kit featuring a forged 4-stroke piston and premium gasket set Reverse-extruded forged aluminum piston for maximum strength and durability Precision CNC-machined for OEM-quality fit and consistent performance Premium Japanese piston rings with wear-resistant coatings reduce friction and extend engine life Forged side relief skirt design promotes smoother operation and minimizes wear Advanced gasket materials deliver dependable, leak-free sealing for high-performance engines Includes: Forged 4-Stroke Piston Piston Rings (3) Piston Pin / Wrist Pin Circlips Complete Top End Gasket Kit Piston Size: 76.96mm Displacement: 250cc Compression Ratio: 13.5:1 Piston Type: Forged Skirt Design: Forged Side Relief Compression Height: 22.30mm Piston Pin: Standard Big End Pin Diameter: 16 x 10 x 42mm.