AFAM Steel Front Sprocket for Gas Gas EC 125 & Yamaha YZ 125 87-04

This AFAM steel front sprocket is a direct replacement for 125cc off-road motorcycles, designed for the Gas Gas EC 125 and Yamaha YZ125 from 1987–2004. This front sprocket combines durability with a precision fit for reliable drivetrain performance in rough conditions.

• Part Number: 21203-13 – the exact replacement for your 13-tooth front sprocket.
• Number of Teeth: 13 teeth (13T) for balanced gearing.
• Material: High-quality steel for long service life and reliable performance in rough terrain.
• Compatibility: Specifically designed for the Gas Gas EC 125 and Yamaha YZ125 (1987–2004) with a 520 chain.
• Chain Configuration: Fits 520 chain, which is common for 125cc cross/enduro applications.

A 13-tooth front sprocket delivers balanced gearing and traction, making shifting and acceleration smoother during trail rides and short sprints. The rugged steel construction delivers consistent performance under heavy loads and during extended use, while the simple installation allows for quick replacement. Ideal for riders looking for reliable, sporty gearing without sacrificing durability.