REPLACEMENT PISTON KIT FOR; P400210100067 BB CYLINDER KIT; HON

Experience maximum strength and reliable performance with an Athena Forged Big Bore Piston Kit. Manufactured using advanced reverse extrusion and precision CNC machining, this forged high-silicon aluminum piston is designed specifically for Athena Big Bore cylinders. Engineered and tested in Italy, it delivers outstanding durability, reduced friction, and smooth power delivery for demanding enduro and off-road applications. Forged high-silicon aluminum piston engineered for Athena Big Bore cylinders Precision CNC-machined to tolerances under 0.01mm for exceptional fit and performance Molybdenum disulfide skirt coating reduces friction and minimizes engine wear Japanese-made piston rings feature wear-resistant coatings for improved sealing and extended service life Dyno and track tested in Italy to ensure race-proven durability and reliability Ideal for high-performance enduro and off-road engine builds Includes: Forged Piston Piston Rings (2) Wrist Pin Circlips Displacement: 289cc Piston Size: 84.95mm Piston Type: Forged Piston Head: Flat Piston Pin: Biconical Wrist Pin Dimensions: 16 x 9 x 44.3mm Compression Height: 18.90mm Forged Side Relief Skirt Designed for Athena Big Bore cylinder kits Intended for competitive or high-performance off-road applications where permitted by local regulations.