New 999, 1040 and 1103cc billet big bore kits from Muzzys deliver unbeatable horsepower increases that put the Arctic Cat Wildcat at the top in terms of overall Side x Side performance. CNC machined billet aluminum cylinders are nickel silicon carbide plated and feature larger water jackets and a superior closed deck design to improve cylinder rigidity and provide a better gasket sealing surface. Slipper type racing pistons, pins, rings, clips and gaskets are included.