PULLEYS: Our pulleys are machined to specific tolerances. The teeth are then gear-cut to proprietary dimensions as called out by our belt manufacturers. This ensures optimal wrap and belt release in addition to providing cool, quiet operation and long, dependable service. KARATAt aluminum pulleys, for INTIMIDATOR SERIES belt drives and standard belt drives are hard anodized in house to 62 Rockwell hardness with an exclusive Alcoa/Martin process. This adds durability and an attractive finish that complements any motorcycle¯ appearance.