Cylinder Works 21009-K01 Big Bore Cylinder Kit

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders.
Three kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big Bore.
Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise.
Nickel Silicon Carbide plated for long life.
Kits come complete with gaskets, cylinder, piston, rings, pin and clips.
Big bore cylinders do not require machine work (unless noted).


Vehicle Fitment:

Yamaha YZ250 1999-2017