RFX Race 14 Teeth Gearbox output pinionRef : RFX01214A / 1123274002

RFX Race Sprocket 14 Teeth — Manufacturer's reference: FXFS 36-14 55ST. Front sprocket machined for transmission, intended for Cross and Roadster environments. Made from treated alloy steel, it is designed for riders seeking engagement precision and durability to replace the original part or modify the gearing ratio.

• Material: alloy steel, hardened (hardness ~60 Rockwell) to resist wear.
• Machining: CNC with tight tolerances ensuring a precise tooth profile and good chain/sprocket contact.
• Teeth: 14 teeth (standard version).
• Chain pitch: 428.
• Color: silver.
• Design: some RFX models feature lightening holes to reduce rotating mass.

This RFX sprocket replaces the original sprocket on compatible 428 transmissions. Its machining and surface treatment contribute to better wear resistance and a longer lifespan compared to an untreated sprocket. Ideal for trail/cross or roadster applications where chain reliability and gearing responsiveness are sought.

Compatibility (examples): Yamaha YZ 85 LW Big Wheels, Kawasaki Z 125, Derbi GPR 125 Racing — check the chain pitch and number of teeth suitable for your setup before ordering.