These levers also feature an adjustment bolt allowing you to position the lever exactly as you prefer. Available in multiple colors. Designed to fit O.E.M. clutch perch. Fold-away design helps prevent broken levers. CNC 6061 billet aluminum construction. Turner Performance Products Billet Folding Clutch & Brake Lever Combo. Turner Performance Products Folding Levers are CNC-machined from 6061 billet aluminum. The folding lever design features an enclosed return spring that keeps dirt and debris from interfering with the performance of your lever. A smooth ergonomic lever with a flat back has a perfect stock-like feel. These levers are designed to fold away if you fall over, and spring back into position when the bike is picked up.