Description
Getting power to the ground cleanly depends on more than horsepower, and a chain riding on a rounded-out sprocket bleeds that power away with every revolution. ProTaper built its Race Spec (RS) rear sprockets around a CNC-machined Angled Mud Groove that channels debris away from the tooth roots as the wheel spins, instead of letting it pack in and wear a groove into the chain. This black 57-tooth rear sprocket is machined for Honda off-road models, and the groove layout also opens up roughly 40 percent more tooth surface area than a standard flat-plate design, so the chain rides on more material with every link that engages.
What makes this sprocket worth the swap:
- Angled Mud Groove design self-cleans during operation, shedding packed mud and dirt instead of trapping it against the chain
- CNC-machined tooth profile increases contact surface area versus flat competitor designs, which spreads load and slows wear
- Countersunk bolt holes self-center the sprocket onto the hub during installation, so no separate hub center guide tool is needed
- 57-tooth count for Honda off-road models, sold individually and ready to bolt on with stock hardware
- The black hardcoat finish keeps a clean, factory-style look on the bike and hides scuffs from chain slap better than bright colors do over a full season of riding.
A tall 57T count is built for low-speed torque, the kind of gearing hillclimb, trials-leaning, and technical single-track riders reach for when wheel speed matters more than a higher top gear. If your current sprocket is hooked or the teeth look rounded under a flashlight, this is a straightforward one-for-one replacement.
