RFX Race 14 Teeth Gearbox output pinionRef : RFX00559A / 1123287002

RFX Race Sprocket 14 Teeth — Ref. FXFS 51-14 55ST

Competition front sprocket CNC machined by RFX, designed for demanding motocross riders. Made from alloy steel that is carburized and hardened with a high surface hardness (60 Rockwell), it offers great wear resistance and increased longevity compared to untreated sprockets. The extremely tight machining tolerances ensure a precise fit with the chain and the rear sprocket, providing reliable transmission during off-road sessions.

Some models feature lightening holes to reduce rotating mass without compromising strength. Ideal for adjusting the gearing of your motorcycle and adapting the handling of the bike to track conditions.

• Brand: RFX
• Reference: FXFS 51-14 55ST
• Number of Teeth: 14
• Chain Pitch: 428
• Material: Carburized Steel (color: silver)
• Version: Standard

Compatible with motocross machines equipped with a 14-tooth sprocket in 428. Application examples: KTM 85 SX STD WHEELS 17/14 (2025), Husqvarna TC 85 STD WHEELS 17/14 (2023), Beta EVO 80 2T Senior (2020). Installation as a replacement for the original sprocket — check the number of teeth and chain pitch before ordering.