Description
Race teams replace rear sprockets on a schedule, not just when they fail, because a sharp new tooth profile keeps the chain seated and power delivery consistent. 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 46-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
- 46-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.
At 46T this sprocket sits close to a lot of factory ratios, giving a balanced spread that still leaves room to gear up or down a tooth or two once you know how your bike likes to pull out of corners. If this is your first gearing change, pair it with a fresh chain rather than reusing a stretched one, since a worn chain will round out even the best new sprocket faster than it should.
