
RFX Pro Series Elite Aluminum Sprocket - 428
Manufacturer reference: FXRS 51-48 99OR
Designed for motocross, this RFX Pro Series Elite sprocket is CNC machined from 7075 aluminum for an optimal weight/stiffness balance suited for off-road conditions. Its orange anodized finish and the laser-engraved RFX logo add a durable and polished touch to the rear transmission.
This standard sprocket fits rear setups requiring 428 and is primarily aimed at small displacement motocross bikes (85 cc). Compatibility examples: KTM 85 SX STD WHEELS 17/14 (2025), Husqvarna TC 85 STD WHEELS 17/14 (2025), GAS GAS MC 85 19/16 (2025). Always check the number of teeth and pitch before installation.