ATHENA CYLINDER KIT YFZ 450 (ATV) BIG BORE KIT

Kits include aluminum cylinder with nickel-carbide coating designed with larger water jacketsIncludes Forged piston, rings, clips and pinAthena top-end gasket set includes required seals and hardwareEasy-to-follow step-by-step installation instructionsMost are bolt-on; no machining required except where noted