My Cart



Athena P400485100068 Big Bore Cylinder Kit (496cc) - 102.00mm, 12.2:1 Compression


Generally ships to addresses in the contiguous United States the same business day if ordered by 12:15PM Central Time!

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.

Yamaha YZ450F 2018-2021

Please Note: