RFX Pro Rear Axle Adjuster Blocks Chain tensionerRef : RFX01240A / 1123306002

RFX Chain Tensioners Pro — FXAB 50600 99OR

Specifically designed for motocross, these RFX Pro series chain tensioners replace the original axle blocks to provide precise positioning and a polished finish. CNC machined from aerospace-grade 7075 aluminum, they offer high rigidity while maintaining a lightweight profile. The orange anodization gives a racing style that matches KTM, Husqvarna, and Gas Gas machines.

• Material: CNC machined 7075 aluminum
• Color: anodized orange
• Packaging: supplied as a pair
• Laser-etched RFX logo
• Graduated markings on both sides for easy alignment

Installation and use: these blocks are positioned on the swingarm to allow for chain adjustment and rear wheel alignment. Installation requires removing the wheel, replacing the axle blocks, and following workshop practices (cleaning, lubricating spacers, using thread-locking compound if indicated by the manufacturer). Always refer to your motorcycle's manual for torque specifications and chain tension.

Compatible motorcycles (examples): KTM 450 SX-F 2025, HUSQVARNA FC 450 2025, GAS GAS EC 500 F 2024.