RFX Race 13 Teeth Gearbox output pinionRef : RFX01219A / 1123279001

Manufacturer Ref: FXFS 42-13 55ST
Designation: RFX Race 13 Tooth Sprocket – RFX Brand

Designed for off-road use, this RFX Race 13-tooth front sprocket is aimed at motocross riders looking for a robust and precise drive component. CNC machined from alloy steel and then carburized to 60 HRC, it offers excellent resistance to wear and the stresses of boosts and accelerations on the tracks. Some models in the RFX range feature lightweight holes; the manufacturing follows strict tolerances to ensure a clean and reliable fit on the output shafts.

• Color: Silver
• Material: Carburized alloy steel
• Number of Teeth: 13
• Chain Pitch: 520
• Version: Standard

Changing the front sprocket directly affects the gearing: a 13-tooth sprocket will provide a suitable compromise for cross/enduro tracks where responsiveness and top speed need to be managed. This aftermarket original part is compatible with 520 transmissions without any special modifications.

Compatibility (examples):

• SUZUKI RMX 450 (2019)
• SUZUKI RM-Z 450 (2014)
• SUZUKI RMX 450 (2018)

Before installation, check the pitch and compatibility with your output housing to ensure optimal fitting and even chain wear.