ASV S1 Series Brake and Clutch Lever Combo. The MotoSport.com ASV S1 Series Brake and Clutch Lever Combo includes ONE ASV S1 Series Brake Lever and ONE ASV S1 Series Clutch Lever, each with the following features: S1 Series Off-Road Front Brake Lever. Features: Front brake lever designed to fit Brembo off-road front brake master cylinders. Shaped to meet the demands of pro supercross race teams. Single pivot design. Stock reach adjust. Forged aluminum with CNC-machined edges for a smooth action pull. Stainless-steel fasteners. One year unconditional guarantee. Made in the U.S.A. Lengths: Stock length to match the stock lever. S1 Series Off-Road Clutch Lever. Features: