RFX Motorcycle crown Aprilia SXV 550 Pro Series 520

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

The dual sprocket design offers optimal performance, reduced weight thanks to a 7075-T6 aluminium core, and longer tooth life thanks to the special high-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 transfer between the two parts and eliminates any force exerted on the rivets.

Features:

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

Installation instructions:

• Start by placing the bike on a stand, with the rear wheel raised off the ground.
• Remove the chain and rear wheel from the bike.
• While holding the hex key, loosen the nuts using a wrench.
• 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 making sure it fits well and that the bolt holes are properly aligned.
• 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, ensuring that 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.
• Reattach the wheel to the bike ensuring that 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): 23
• length (mm): 309
• volume (cm³): 2175
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 50 teeth
• number of teeth (sprocket): 50