Description
A stretched chain hides a lot of sins, but it will chew through a soft front sprocket fast, so Renthal machines this replacement for the 18-21 Honda RF 250R/RX to hold concentricity and tooth geometry long after cheaper stampings round off. A front sprocket with even a small amount of runout puts uneven tension on the chain every single revolution, which is the kind of wear pattern that is hard to spot until a chain starts skipping under load.
Built for the way sprockets actually fail
- CNC machined for concentricity that keeps the chain running true under load
- Engineered tooth geometry maximizes power delivery instead of just meeting a bolt pattern
- Even load dispersion helps the chain wear evenly instead of hooking one side of the sprocket
- Bolts on using the stock hardware, no adapters or spacers required
- Consistent machining tolerances reduce the vibration that comes from an out-of-round sprocket
This one is cut with a 12-tooth count on 520 pitch in the grooved pattern, so confirm that matches your current gearing before ordering since Renthal offers this fitment across several tooth counts for the same bike. IPD Racing stocks the full range for the 18-21 Honda RF 250R/RX so switching a tooth or two to dial in your gearing does not mean waiting on a special order.
