S&S Cycle Cam Sprocket - Adjustable - Polaris889052557 Product Description Plus minus 10 of adjustability on the camshaft (crankshaft degrees) General affects of lobe separation angle Narrower: increased overlap, broad torque cure Wider: decreased overlap, increased peak power General affects of advancing and retarding camshaft timing Advanced: moves peak torque and power to lower rpm, improves low end throttle response Retarded; moves peak torque and power to a higher rpm