RFX Motorcycle crown Fantic XE 125 [125]/Yamaha WR 450 F (CJ09) [450]

The RFX Pro Series Armalite sprockets are designed and tested at the highest level by racing teams in the world and British championships.

The two-sprocket design offers optimal performance, reduced weight thanks to a centre made from 7075-T6 aluminium, and a longer tooth lifespan due to the special high carbon density steel outer layer.

The Armalite sprockets also feature a hexagonal interface between the inner and outer rings, a revolutionary technology for sprockets that maximises the transmission between the two parts and eliminates any force on the rivets.

Features:

• CNC 7075 aluminium inner ring
• HCS outer ring
• Hex-Drive interface between the inner and outer ring
• CAD-designed profile for lightweight performance.
• New style of mud release grooves to reduce wear.
• The rigid design increases torsional resistance.
• Anodised colour

Installation instructions:

• Start by placing the bike on a stand, with the rear wheel elevated off the ground.
• Remove the chain and wheel from the bike.
• While holding the hex key, loosen the nuts using a wrench.
• Remove all nuts and the worn sprocket.
• Clean the hub area, ensuring it's clean and free of debris.
• Take the new sprocket and place it on the hub, making sure it fits properly and the bolt holes are aligned.
• Clean the bolts and nuts for the sprocket.
• Apply blue Loctite on each bolt and insert them into the holes.
• Hand-tighten the nuts onto the bolts, ensuring the seals are intact and in good condition.
• Keep the hex key in place and evenly tighten the nuts.
• Tighten the nuts and bolts according to the user manual.
• Replace the wheel on the bike, ensuring the chain is properly aligned and tightened according to the manufacturer's specifications.

Features:

• colour: Blue
• material: Aluminium
• v-colour: Blue
• weight (g): 481
• width (mm): 306
• height (mm): 20
• length (mm): 309
• volume (cm³): 1891
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 50 teeth
• number of teeth (sprocket): 50