Athena P400485100068 Big Bore Cylinder Kit (496cc) - 102.00mm, 12.2:1 Compression engine-gaskets-seals-base-gaskets Utilizes all stock sensors

Utilizes all stock sensors

2022 Can-Am Defender PRO HD10 XT

OEM # 25416-70F

420 SRO/428 SROZ chains include semi-press fit clip connecting link

Integrated multi-function red LED rear light included

Athena P400485100068 Big Bore Cylinder Kit (496cc) - 102.00mm, 12.2:1 Compression engine-gaskets-seals-base-gaskets Utilizes all stock sensorsKits 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. Vehicle Fitment: 2018 2021 Yamaha YZ450F