RFX Motorcycle crown Aprilia RXV 450 [450]/Aprilia SXV [450]/Aprilia RXV 550 [550]

The RFX Pro Series Armalite sprockets are designed and tested at the highest level by the racing teams of the World and British Championships.

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

The Armalite sprockets also feature a hexagonal interface between the inner ring and the outer ring, a breakthrough technology for sprockets that maximizes the transmission between the two parts and eliminates any force applied to the rivets.

Features:

• CNC 7075 aluminium inner ring
• HCS outer ring
• Hex-Drive location between the inner and outer rings
• CAD-designed profile for added lightness.
• New mud clearance groove style to reduce wear.
• The rigid design increases torsional strength.
• Anodized colour

Installation instructions:

• Start by placing the bike on a stand with the rear wheel off the ground.
• Remove the chain and the wheel from the bike.
• While holding the hex key, loosen the nuts using a wrench.
• Remove all nuts and the worn sprocket.
• Clean around the hub ensuring it is clean and free of debris.
• Take the new sprocket and place it on the hub making sure it fits well and the bolt holes are properly aligned.
• Clean the bolts and nuts of the sprocket.
• Apply blue Loctite on each bolt and insert them into the holes.
• Screw the nuts onto the bolts by hand, ensuring 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 to the manufacturer's specifications.

Features:

• colour: Orange
• material: Aluminium
• v-colour: Orange
• weight (g): 500
• width (mm): 315
• height (mm): 20
• length (mm): 280
• volume (cm³): 1764
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 51 teeth
• number of teeth (sprocket): 51