Wiseco offers big bore kits for many applications to bring you the most power possible. Their kits include brand new cylinders. Dedicated forging for light weight, superior strength, optimized design. High compression for maximum torque and throttle response. Dome design gives improved flame travel to maximize air / fuel burn efficiency. Chrome plated piston pin for reduced friction, improved scuff resistance. Horizontal slot pin oiling provides improved lubrication, better pin oiling, reduced friction. Pressure seal groove allows for maximum ring seal. Skirt coated for reduced friction, quieter operation, improved scuff resistance. Dedicated rings are optimized for each application, light weight, high performance, better oil control. Bolt-on cylinder - no case machining necessary.