Cylinder Works Standard Bore Cylinder (66.4mm) Yamaha YZ250 99-23 Fantic XX 250 22-23
Cylinder Works Cylinder – OEM appearing new, not remanufactured, cast aluminum nickel silicon carbide (NSC) electroplated stock bore cylinder that appears just like an OE cylinder. NSC is a composite of a nickel and silicon carbide, providing an excellent wear resistant surface with oil retention capabilities. Cylinders are then diamond honed to the exact bore dimension and proper surface finish to ensure the proper ring seal and oil retention.
Product Features:

OEM in appearance but a fraction of the price.
New Cast aluminium.
Nickel silicon carbide (NSC) electroplate bore which allows for tighter tolerances, lower friction, and extreme durability.
Precision diamond honed to exact bore dimensions and proper surface finish to ensure ring seal and oil retention.