Avon Diamond Contour Smooth Grips For Harley With Throttle By Wire To create the Diamond Contour Grips, Avon upgraded their classic Custom Contour grips with an innovative Air-SS cushioning system for increased vibration damping. Features: The ultimate in style and comfort These ergonomically designed grips are made of billet aluminum and genuine Avon seamless rubber grip technology They provide the rider with the ultimate in style and vibration-reducing comfort For 1 bars