Performance engineered primary motor sprocket replaces OEM Compensator on Milwaukee 8® models. Provides instant torque response combined with an "engine pulse absorbing cushion drive" primary drive system. Engineered for longevity compared to OEM compensating sprockets without sacrificing rider comfort. Patented system puts an emphasis on rider comfort compared to the noise and harsh feeling under loads associated with one piece solid motor sprockets. Premium features includes the ability to rebuild and service the unit in place versus expensive compensators that need to be replaced as an entire unit. Made in the USA. Fits 17-24 Touring, 18-24 Softail, except FLFB, FLFBS, FXBR, FXBRS, FXDR.