Mountain Rear Hub

Machined to the tightest tolerances. Onyx hubs use sprag internals for strength, extremely low rolling resistance and infinite points of engagement. All Onyx hubs come standard with ceramic hybrid bearings so there is no need to upgrade.

• Modular Freehub Unit (MFU) for quick compatibility to multiple Freehub standards, with silent instant engagement
• Grease is durable to -65 Fahrenheit
• XDR/XD Compatible
• Alloy Freehub body