Mountain Rear Hub Exos 545mm² surface area for maximum

545mm² surface area for maximum power transfer and stability

Open ends with Two Color Push In Plugs end plugs included

Compatible with RockShox FS-SID-SEL2-D1

co-molded construction with IPX7 water resistance ensures reliability in harsh weather

Secure engagement and minimal clip-out angles

Mountain Rear Hub Exos 545mm² surface area for maximumMachined 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