Cylinder Kit 12mm Big Bore NCY

NCY 47.6mm Ceramic Air Big Bore with 12mm Piston

This NCY big bore  kit has some of the most aggressive porting we've ever seen. The
ceramic coat allows for the engine to run at a much higher RPM than normal
which will get you that extra horsepower  that you've been itching for!
12mm piston requires use of 12mm crankshaft!

12mm Crankshaft