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

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

The dual sprocket design offers optimal performance, reduced weight thanks to a 7075-T6 aluminium core, and longer tooth life due to the high-density carbon steel outer layer.

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

Features:

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

Installation instructions:

• Start by placing the motorcycle on a stand, with the rear wheel raised off the ground.
• Remove the chain and the wheel from the motorcycle.
• While holding the hex key, loosen the nuts using a wrench.
• Remove all nuts and the used sprocket.
• Clean the area around the hub, ensuring it is clean and free from debris.
• Take the new sprocket and place it on the hub, ensuring it is properly fitted and that the bolt holes are correctly positioned.
• Clean the bolts and 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 the seals are intact and in good condition.
• Hold 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 motorcycle, ensuring the chain is properly aligned and tightened according to the manufacturer's specifications.

Specifications:

• colour: Orange
• material: Aluminium
• v-colour: Orange
• weight (g): 481
• width (mm): 306
• height (mm): 15
• length (mm): 309
• volume (cm³): 1418
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 50 teeth
• number of teeth (sprocket): 50