
RFX Race Sprocket 10 Teeth ā manufacturer reference FXFS 91-10 55ST. Designed for motocross, this RFX front sprocket is aimed at riders looking to adjust the final drive ratio to modify acceleration or top speed according to terrain and riding style. Silver finish, standard version, suitable for chains with a pitch of 520.
CNC machined from alloy steel and then carburized to achieve a hardness of around 60 Rockwell, this sprocket offers tight tolerances for precise engagement and good wear resistance. RFX sprockets are designed to last under off-road conditions; some models also feature lightening holes to reduce rotating mass.
Common compatibilities (examples): Montesa Cota 300RR (2017), Montesa Cota 4RT 260 (2016), Montesa Cota 4RT 250 (2009). Check compatibility with your machine before installation to ensure proper fit and safe operation of the drivetrain.