Basic kit for improving the performance of GX270 & 270/301cc OHVs. Simple to install, you can expect significant performance increases

Step up from the Stage 1, this kit is designed to further improve the power for theGX240s and GX270s by adding a larger carb and cam.

As step up from the Stage 2, this kit is designed to improve the power for the GX340s and GX390s along with improving the durability.

For building a serious a GX270 or301, the 4 kit starts with package similar to that of the stage 3 kit but adds a Ported and Milled Head with stainless, stainless valves, stud kit, & HD valve train components.