OEM-style standard bore kits include a cast aluminum Cylinder Works cylinder, Vertex Piston and gaskets needed to restore horsepower and performance, as a competitive price point, compared to OEM options.

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2003-2006KawasakiKFX400Base2000-2016SuzukiDR-Z400Base

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2010-2013YamahaYZ450FBase

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel1997-2004YamahaYZ125Base

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2008-2013YamahaYZ250FBase

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel1987-2006YamahaYFZ350 BansheeBase

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2005-2021YamahaYZ125Base

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2014-2015HusqvarnaFC250Base2013-2015KTM250 SX-FBase

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2001-2008KTM65 SXBase

Kits include aluminum cylinder with galvanic coating design with forged piston with molybdenum coating.This Part Fits:YearMakeModelSubmodel2009-2014KawasakiKX450FBase