Onyx MTB Rear Hub - 12 x 148mm 6-Bolt XD Black 32H Model=PN 4.1 Saddle More compact and lighter than

More compact and lighter than ever the R7170 brakes offer wide pad clearance for easy wheel removal and quiet performance as well as one-way bleeding for easy clean maintenance

The same goes for the other sizes offered

Extra-Soft (White) and Extra-Firm (Red) springs sold separately Steerer Type Tapered Defined Color Black Positive Spring Coil Wheel Size 27

Steerer not compatible with star nuts

Bead Shield - reinforcing guard for extra bead protection

Onyx MTB Rear Hub - 12 x 148mm 6-Bolt XD Black 32H Model=PN 4.1 Saddle More compact and lighter thanMachined 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. Ceramic hybrid bearings 7075 Aluminum Hub Shell Adjustable preload Titanium bolts Extremely low rolling resistance 5 year limited warranty Made in the USA Flange Diameter, Left 60 Rear Axle 12mm Thru x 148mm Flange