
Reference: FXAB4020099RD
RFX Pro chain adjusters made of aluminum, designed for off-road riding and precise rear wheel maintenance.
CNC machined, these RFX Pro series axle blocks allow for reliable chain tension adjustment while facilitating rear wheel alignment — no more guesswork when repositioning the wheel. Designed for the Cross environment, they fit on bikes requiring quality adjusters, with a red finish that adds a racing touch to your swingarm.
Examples of compatible models: YAMAHA YZ 250 (2025, 2026) — these references provide an idea of common applications, but please check the fitment on your machine before installation. Ideal for riders looking for precise fitting parts and a polished look on trails and tracks.