- Class leading design provides zero drag on the drivetrain while offering the ultimate in security for aggressive riding - Designed for Enduro, aggressive All-Mountain, Freeride, and DH racing - Versatile design allows for easy installation and adjustment for different ring sizes - The Whippersnapper lower guide provides security for the chain to prevent chain drops under G-outs and in the roughest of terrain - Soft co-molded TPU material in the updated HD upper guide and the Whippersnapper lower guide prevents the chain from making noise