RFX Race 13 Teeth Gearbox output pinionRef : RFX01235A / 1123299001

RFX Race Sprocket 13 Teeth - Ref. FXFS 83-13 55ST

Designed for motocross terrains and demanding riders, this 13-tooth RFX Race front sprocket is CNC machined from high-strength alloy steel and then carburized for a high surface hardness (≈60 Rockwell), ensuring excellent wear resistance. Its sterile silver finish and "standard version" design make it a reliable part for the 520 transmission, ready to handle the accelerations and RPM changes typical of off-road riding.

• Material: Carburized alloy steel
• Color: Silver
• Number of teeth: 13
• Chain pitch: 520
• Version: Standard (without weight-saving holes)
• Machining: CNC, tight tolerances

Ideal for motocross setups, this sprocket is aimed at riders looking for durability and longevity in their transmission. It is particularly suitable for SHERCO SEF‑R FACTORY models (125, 250, 300 - 2023 model year) according to original mounting. To preserve the lifespan of the drive train, check the condition of the chain and the rear sprocket and replace them if necessary when changing the front sprocket.