Gates Micro-V Belts feature an exclusive truncated rib profile that makes it more flexible than a conventional V-ribbed belt, especially on extra-high speed, small-diameter sheave drives. Also, the shortened rib profile keeps the multi-ribbed belt from bottoming out, helps it tolerate debris in grooves, and reduces heat build-up. The belt is ideally suited for most multi-shaft, serpentine, backside idler and V-flat drives.

Please refer to the infographic below if you're not sure what crank pulley you have. Please note that "V2" fitment ONLY applies to Unorthodox Racing, and they will always be silver. AMS, GFB, and any anodized UR pulleys are all V1.