RFX Pro Series Armalite Crowns are designed and tested to the highest level by the best British and World Championship racing teams.

The double ring design provides maximum crown performance, low weight thanks to the 7075-T6 aluminum center and long tooth life thanks to the high carbon steel exterior.

Armalite crowns also incorporate a hex drive interface between the inner and outer ring, a revolutionary technology that maximizes drive between the two parts and reduces force on rivets to zero, unlike the competition.

Characteristic:

CNC 7075 Aerospace Aluminum Inner Ring

HCS outer ring

Hex-Drive location between inner and outer ring

CAD designed profile for lightness

New style of mud clearance grooves to reduce wear

Rigid design increases torsion resistance

Color anodized to give it that factory bike look

Assembly instructions:

Place the bike on a kickstand with the rear wheel off the ground

Remove the chain and wheel from the motorcycle

Hold the hex key and loosen the nuts with a spanner

Remove all the nuts and the old crown

Clean around the hub making sure it is clean and free of debris

Take the new crown and place it on the hub making sure it is snug and the screw holes are in place

Clean the crown bolts and nuts

Apply Blue Loctite to each screw and insert them into the holes

Thread the nuts onto the bolts by hand, making sure the retainers are intact and in good condition.

Hold the hex key and tighten the nuts in an even pattern

Tighten the nuts and bolts according to the owner's manual.

Refit the wheel making sure the chain is properly aligned and tightened to manufacturer's specifications
NUMBER OF TEETH OF THE CROWN: 48
COMPOSITION: ALUMINUM
REAR SPROCKET VERSION: STANDARD
CHAIN PITCH: 520