RFX Motorcycle crown Yamaha WR 250 F (CG36) [250]/Fantic XXF 250 [250]

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

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

The Armalite sprockets also feature a hexagonal interface between the inner and outer rings, a revolutionary technology for sprockets that maximizes transmission between the two parts and eliminates the force 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 reduced weight.
• New mud release groove style to reduce wear.
• Sturdy 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 wheel from the bike.
• While holding the hex key, loosen the nuts using an adjustable wrench.
• Remove all nuts and the worn sprocket.
• Clean the hub area, ensuring it is clean and free of debris.
• Take the new sprocket and place it on the hub, making sure it fits snugly 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.
• Screw the nuts onto the bolts by hand, 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 owner's manual.
• Replace the wheel on the bike, ensuring that the chain is properly aligned and tightened according to the manufacturer's specifications.

Specifications:

• colour: Blue
• material: Aluminium
• v-colour: Blue
• weight (g): 481
• width (mm): 306
• height (mm): 20
• length (mm): 309
• volume (cm³): 1891
• chain pitch: 520
• sprocket version: Standard
• v-number of teeth: 48 teeth
• number of teeth (sprocket): 48