KWI X3 HELIX
X3 DR - This helix has our special DR angle that increases mid-range acceleration, increases top speed, improves back shifting and lowers belt temps. We have developed this helix angle through thousands of hours of testing in the harshest conditions to be the best possible performing angle for your X3. (not for Turbo RR models- See #4 cut helix below)
X3 #4 cut - This #4 Cut angle is specifically designed for the Turbo RR models and any model with aftermarket big turbo swaps. It will dramatically increase your low to mid-range acceleration, increase top speed, improve back shifting, and lower belt temps.