The Twist Clutch assembly consists of our Left Twist Assembly combined with our universal Twist Clutch Cable. The Left Twist Assembly is basically a reversed-spiral version of our ITA with a spiral twice as steep as the throttle assembly to double the amount of leverage that is applied to the cable. We routinely use this system to activate the stock HD clutch or the Primo diaphragm clutch resulting in a smooth, light twisting operation at the grip – and super-clean bars! Our Twist Clutch will, of course, work with other clutches, but remember that the stronger your clutch springs the harder the grip will be to twist.