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Athena Big Bore Cylinder Kit (478cc) - 3.00mm Oversize to 98.00mm P400485100016

Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets

Forged piston black graphite or clear tin coating; includes rings, clips and pin

Athena top-end gasket set includes required seals and hardware

Easy-to-follow step-by-step installation instructions

Most are bolt-on; no machining required except where noted