Pro Taper Profile Clutch Perch The Pro Taper Profile Clutch Perch integrates a low profile design and a factory race team inspired quick adjust star to provide one of the most technologically advanced universal assemblies on the market. With sealed bearings at the lever pivot, the Profile assembly virtually eliminates friction and provides a smooth, consistent lever feel. But that is just the beginning. Once installed, you will recognize the countless hours of R&D that have been instilled in the Pro Taper Profile Clutch Perch design. Universal application fits most make and model off-road bikes.