Renthal 12-Tooth Front Sprocket for Kawasaki KX125 1992-2005 337-520-12GP

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