RFX Motorcycle crown Gas Gas MC 250 F Pro Series 520

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

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

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

Features:

• CNC 7075 aluminium inner ring
• HCS outer ring
• Hex-Drive location between the inner and outer rings
• CAD designed profile for more lightness.
• New mud release groove style to reduce wear.
• The rigid design increases resistance to torsion.
• Anodised colour

Installation instructions:

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

Features:

• colour: Red
• material: Aluminium
• v-colour: Red
• weight (g): 500
• width (mm): 315
• height (mm): 20
• length (mm): 370
• volume (cm³): 2331
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 49 teeth
• number of teeth (sprocket): 49