The Onyx Ultra quickly became the "Gold Standard" throughout the racing scene. The instant-engagement system features no play or slack in the drive system with instant reaction to torque. The included ceramic bearings bolster performance and durability. 

FEATURES:

• Ceramic Hybrid bearings
• Instant engagement
• Machined alloy lockring
• Shimano compatible driver fits several cog options including the Onyx Cog (not included)
• 36 Hole
• Titanium female axle bolts

Available with 10mm female bolts, 15mm female bolts or 15mm thru axle.

We offer custom widgets and shell colors as well, contact us for any specialty order