CYLINDER WORKS STD BORE KIT YAMAHA YFZ450 04-09 20001-K01

As an alternative to costly OEM cylinders or the time-consuming process of re-plating existing cylinders, Cylinder Works offers a complete line of replacement cylinder kits. Every kit comes complete with the piston, rings and gaskets to get you back in action quickly. On top of the standard bore/standard compression kits, Cylinder Works also offers standard bore/high compression kits that give you more horsepower. Every cylinder is nickel-silicon-carbide plated for tighter tolerances, low friction, durability and better heat dissipation.