
RFX Race Sprocket 12 Teeth – manufacturer reference FXFS 10-12 55ST. CNC machined front sprocket made of alloy steel, designed for 520 chain transmissions. Its carburizing and heat treatment bring the hardness to approximately 60 Rockwell, ensuring excellent wear resistance for intensive use on track as well as off-road.
Designed for demanding riders, this RFX Race sprocket offers tight machining tolerances for a precise fit with the chain and the rear sprocket. The silver finish highlights its raw and durable steel construction. The standard version with 12 teeth maintains the original ratios for faithful engine behavior.
Ideal for Cross and Roadster environments, this sprocket fits machines requiring a 12-tooth front sprocket in 520. Compatibility examples: HONDA CR 125 R (JE01) 2003, HM CRE 125SM 2003, HM CRE 125 2003. Depending on the model, some RFX sprockets may be equipped with lightening holes to reduce rotating weight.
RFX product intended for riders seeking a robust and precise part for the front transmission of their motorcycle, manufactured according to industrial standards of machining and heat treatment.