RFX Motorcycle crown Gas Gas EC 350 F Pro Series 520

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

The dual sprocket design offers optimal performance, reduced weight thanks to a centre made from 7075-T6 aluminium, and a longer lifespan for the teeth due to the outer layer made from special high-density carbon 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 increased lightness.
• New style of mud clearance grooves to reduce wear.
• Sturdy design increases torsional strength.
• Anodised colour

Assembly 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 with a wrench.
• Remove all nuts and the worn sprocket.
• Clean around the hub to ensure it is free of debris.
• Take the new sprocket and place it on the hub, ensuring it is fitted correctly and the bolt holes are well positioned.
• Clean the bolts and nuts of the sprocket.
• Apply blue Loctite to each bolt and insert them into the holes.
• Hand-tighten the nuts onto the bolts, making sure 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.
• Reattach the wheel to the bike, ensuring the chain is properly aligned and tightened to the manufacturer's specifications.

Features:

• colour: Blue
• material: Aluminium
• v-colour: Blue
• weight (g): 826
• width (mm): 240
• height (mm): 18
• length (mm): 293
• volume (cm³): 1266
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 51 teeth
• number of teeth (sprocket): 51