Description
If you’re chasing crisper corner exits on a KX without piling on extra rotating weight, this is the rear sprocket to look at before anything stamped from steel. This Renthal rear sprocket, part number 112U-520-50GEPE, is machined from 7075-T6 aluminum that comes in around 33 percent lighter than a comparable steel piece, cutting rotating weight right where it matters most for acceleration and quick direction changes.
Why this sprocket earns its price:
- Anodized purple finish holds up to UV exposure and repeated pressure washing better than a painted sprocket
- Machined from 7075-T6 aluminum, roughly 33 percent lighter than an equivalent steel sprocket
- Even, controlled wear across the tooth face extends both sprocket and chain life
- Special tooth profile lets the chain roll on and off the sprocket smoothly instead of binding at each link
This 50-tooth version is sized for the 94-and-newer KX 125-450 lineup on 520 chain, and the IPD Racing team can talk through gearing changes if you’re chasing a specific top speed or acceleration curve. Priced at $104.95, it is a genuine Renthal part backed by the manufacturer, and the 94+ Kawasaki KX 125-450 fitment is confirmed against the Renthal 94+ Kawasaki KX 125-450 Rear Grooved Sprocket – Purple 520-50 Teeth spec before it ever hits our shelf.
