Description
A worn stock sprocket on a 1994-and-newer KX doesn’t just wear the chain faster, it starts eating into acceleration you paid good money for in the engine bay. This Renthal rear sprocket, part number 112U-520-51GEPE, 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:
- Machined from 7075-T6 aluminum, roughly 33 percent lighter than an equivalent steel sprocket
- Reduced rotating mass at the rear wheel means less rotational inertia for the engine to overcome out of every corner
- Direct bolt-on fitment for the specified KTM/Husqvarna platform, no adapters or spacers required
- Smoother chain engagement translates to a quieter drivetrain and noticeably less vibration at speed
Available here in the 51-tooth configuration for KX 125-450 models from 1994 forward, with IPD Racing shipping from stock so it’s on your bike before the weekend. 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 520-51 teeth spec before it ever hits our shelf.
