RSE High Performance Carburetor Reed Valve Kit The RSE High Performance Carburetor Reed Valve Kit is going to give your motorized bike a smoother ride than before, with an increase in torque you'll love When you mount your carburetor to this reed valve assembly you will feel an increase in throttle response as well as an increase in torque; compatible with NT, Speed, and Dellorto (and Dellorto clone) carburetors Installation is for experienced builders: remove your carburetor's existing intake manifold and mounting studs. Hold the gasket against the cylinder, then fit the reed and valve assembly up to the cylinder. Assemble all pieces of the valve, then torque the provided mounting studs in to your engine. After that just mount your carburetor and you're ready to ride The valve body is made from composite materials, and the valves are made from fiberglass to ensure flexibility