120R Big Bore Kit

Take your SE 120R/120ST to the next level with our 124R big bore kit. We take your stock 4.060” cylinders and bore them to 4.125” on our Precision hone and torque plates. We have two pistons for this kit, both come with full skirt coating and the Premier Total Seal rings. We have a 4.5cc in chamber piston that will bump the compression while still allowing you to use your stock heads. We also have a 12cc dome, 20° angle piston that pairs great with our Upgrade head and a bigger lift cam.

$950

*Price does not include NC Sales Tax or shipping