Collection: transmission & rear sprockets

The power of the engine is ultimately determined at two points: how the transmission regulates torque through the gears, and how the rear sprocket finally transfers that power to the road. The transmission sprocket is the smaller, front cog that initiates the drive from the transmission's output shaft, while the rear sprocket, mounted on the wheel hub, receives this force and rotates the wheel. These two components together determine the gear ratio – how "lively" or how calmly, at low RPM, the engine responds to throttle input. A worn tooth, an incorrect gear ratio, or an improperly fitted sprocket can lead to uneven power transmission, noisy operation, or premature chain wear. In our selection, you will find transmission and rear sprockets for Harley-Davidson, Indian, and metric custom motorcycles, ranging from factory-spec tooth counts to ratio-modifying combinations for performance or torque enhancement. Chrome, black, and raw steel finishes are available, with various tooth counts that allow precise fine-tuning of the engine's character – whether for more dynamic acceleration or calmer highway cruising. Quality sprockets are manufactured with precision from wear-resistant materials to reliably, smoothly, and quietly transmit power over the long term. Whether your goal is to replace a worn sprocket or to modify the entire gear ratio, you will find the transmission and rear sprockets with us that perfectly match your motorcycle and your needs.