Description
If you’re running a KX125 hard, your sprocket is one of the first components to show wear under sustained throttle and chain tension. The Renthal 12-Tooth Front Sprocket replaces that wear item with a precision-engineered alternative that shaves 10-15% off unsprung weight while delivering measurable gains in acceleration and mid-range response. Built from case-hardened 655M13 nickel-chromium steel with self-cleaning mud grooves, this is the sprocket purpose-built for riders who demand reliability in mud, sand, and high-RPM conditions.
Lightweight construction directly translates to quicker throttle response and easier weight transfer during cornering—advantages that compound over a full moto. The machined tooth grooves aren’t cosmetic; they actively shed debris and mud that would otherwise pack into conventional designs, reducing drag and extending sprocket life. For motocross and off-road applications where every tenth counts, this is a straightforward upgrade.
- Material: Case-hardened 655M13 steel
- Tooth Count: 12
- Chain Size: 520
- Weight Reduction: 10-15%
- Design Feature: Self-cleaning mud grooves
- Fitment: Kawasaki KX125 (1992-2005)
- Installation: Bolt-on
- MPN: 337-520-12GP






