Description
ProTaper’s Race Spec rear sprockets are built around tooth geometry that keeps working after the mud shows up, and this 50-tooth version for Honda and Yamaha bikes in Black carries that same design forward.
It carries ProTaper’s Race Spec (RS) designation, meaning the tooth geometry was developed with racing wear rates in mind, not just a stock replacement spec. Angled Mud Grooves at each tooth root clear mud on the fly, which is the difference between a sprocket that stays quiet and one that starts skipping in the whoops. The tooth profile is CNC machined for up to 40 percent greater surface contact than a typical aftermarket sprocket, so load is shared rather than concentrated.
Features and Benefits
- Self-centering countersunk mounting holes line the sprocket up on the hub automatically during a wheel-off install
- Self-cleaning Angled Mud Groove tooth design clears debris as the wheel turns, keeping chain contact consistent in mud and sand
- CNC-machined tooth profile adds up to 40 percent more chain contact area than competing sprockets, slowing wear
- Cut to 50 teeth for Honda and Yamaha rear hubs, finished in Black, part of ProTaper’s Race Spec lineup
Why buy ProTaper from IPD Racing?
IPD Racing has been building and racing performance machines since 2005, and we only stock parts we would run on our own bikes. ProTaper sprockets are a mainstay in our shop for exactly this reason, and every order ships from a stocking warehouse so you are not waiting on a dropship supplier.
For 85cc racers, matching sprocket teeth to the local track layout matters as much as it does on full-size bikes, so confirm this 50-tooth count against your current setup. Part number 033220, fits KTM and Husqvarna 85 SX/TC 85 models.








