Optimize ACCELERATION AND QUICKER BACK SHIFTING WITH OUR PERFORMANCE HELIX for the pro R. Our custom and proprietary cut angle maximizes performance. Recommended use with our clutch weights, primary spring, and secondary spring. This will help bring your machine alive, especially after adding heavy accessories, and different tires to your machine.

20-PRO-3

-Heavy and big tire applications

20-PRO-4

-Supercharged & Turbo Applications