We offer 3 types of cuts on our ACT helixes.

Straight Cut.

Progressive angle helixes progressively change from the starting angle to the ending angle down the whole ramp.

Compound radius cut helixes are progressive on the first section of the ramp and have a straight angle on the end of the ramp.

The advantage to the compound radius is that it will typically back shift quicker for snow cross or tight twisty trail riding. The starting angle is always steeper at first for quicker acceleration, then progressively changes to the lesser angle so that the clutches don’t over shift and bog down the motor so you retain excellent top speed. Our helixes have a teflon hard coating for the smoothest shift possible.