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Athena P400270100021 Big Bore Cylinder Kit (276cc Big Bore) - 4.00mm Oversize to 82.00mm


Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets. Includes Forged piston, 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.

Husqvarna FC250 2016-2018
KTM 250 SX-F 2016-2018
KTM 250 XC-F 2016-2018