The DURA-ACE C60 series wheelset, available in both rim- and disc brake version, provides improved rigidity thanks to a wide flange hub and offset rim so you can reach that next level of aerodynamic performance. 
 
The front wheel has 16 and the rear wheel has 21 reinforced stainless steel spokes. The rear wheel is centered on a aluminium freehub body and creates the delicate balance - so crucial to acceleration and speed - between light weight and rigidity. The WH-R9100 series make use of the most advanced rim designs and materials; super-light carbon fiber composites. 
 
Note: For 10-speed, the supplied 1,85mm spacer ring is required. 
 
Manufacturer item code: EWHR9100C60FRCY 
Material: rims: aluminium/carbon 
hubs and axle: aluminium 
freehub body: titanium 
spokes: stainless steel 
Weight: approx. 1789 gram (set) 
(front: approx. 800 gram, rear: approx. 989 gram - manufacturer information) 
Rim: Shimano Dura Ace 
Rim height: FW: 60 mm | RW: 60 mm 
external/internal rim width: inner: 17 mm | outer: 24 mm 
E.T.R.T.O.: 17-622 
Spokes: bladed, butted 
Nipples: aluminium, black 
Spokes number: front: 16 | rear: 21 
Hub axle system: front: 9x100 mm | rear: 10x130 mm 
Fitting type of tire: clincher 
Fitting tire dimension: 23-622 - 32-622 
Purpose: competition 
hub: Shimano Dura Ace 
Fitting for shifting: Shimano 10/11-speed 
Color: black 
Included in delivery: incl. quick releases, spoke key, spacer