PBR Steel Standard Front Sprocket 2103 - 520 Gearbox output pinionRef : PBR01281A / 1077568003

PBR Standard Steel Sprocket 2103 - 520 (Manufacturer reference: 2103 14 18NC)

Designed for the motocross world, this PBR engine sprocket draws on competition experience to provide a robust and reliable part. Made from 18NCD5 steel alloy, it combines abrasion resistance and corrosion resistance, making it ideal for muddy outings and intensive riding.

• Material: 18NCD5 steel
• Number of teeth: 14
• Chain pitch: 520
• Type: Sprocket 2103, standard version

The tooth profile and strict manufacturing process ensure smooth interaction with the chain and the rear sprocket, minimizing jolts and premature wear when the engine delivers its torque. PBR is aimed at riders looking for a reliable replacement part, suitable for off-road riding while maintaining the original behavior of the transmission.

Compatible with many motocross models — including YAMAHA YZ 250 F (2026), FANTIC XX 125 (2022), and GAS GAS EC 300 F (2015) — this standard sprocket easily replaces the original. Be sure to check the condition of your chain and alignment during installation to ensure optimal longevity.