Description
Every drivetrain has a weak link, and on most dirt bikes it is the rear sprocket that gives up first under sand, roost, and repeated hard launches. 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 48-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
- 48-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.
Running a 48T rear tightens acceleration through each gear, useful for tracks with tighter turns or riders who want the bike to snap up out of ruts instead of lugging. For riders splitting time between the track and trail, keep a spare on the shelf so a gearing change for race day does not turn into a scramble the night before.
