In the era of 11 speed hydraulic disc brake/shifters from SRAM and Shimano found on cyclocross bikes, like my very own Focus Mares CX 2.0, the bicycle manufacturers seem to be charging ahead of most aftermarket hub manufacturers. This makes it challenging when you’re looking for a custom, lightweight, wheelset for cross racing.
Right or wrong, necessary or not, we are in the new world of 11 speed cassettes married to hydraulic disc brake/shifter systems from SRAM and Shimano that are found on modern cyclocross and road bikes, some with modern through-axles and wide 142mm rear dropouts. The mountain bike market has fully spilled over into cyclocross. Why not use common axle standards found on disc hubs used in the mountain bike market? Today, it is very common to see 15mm through-axle front disc hubs, with 142mm x 12mm through axle rears on mountain bikes. Standard stuff, really. But on cyclocross bikes this is relatively new. Quick release axles, those standards found on almost every road bike since Campagnolo invented the QR are now becoming less common on new ‘cross bikes.
Today, in 2014, cyclocross bikes featuring through-axle (TA) hubs include the Focus Mares CX (15mm TA front, 142×12 rear), Norco Threshold (15mm TA front, 142 x 12mm TA rear), and the Giant TCX (15mm TA front, QR rear). In addition, ENVE and Whisky are making front forks with 15mm through axle fronts. But it is the deviation from the quick-release road standard in the rear that has created concerns. You see, not very many brands offer rear disc hubs with through axles that are compatible with 11 speed road cassettes. And if they are, they are often limited in their drillings, the number of spokes needed.
A ‘cross bike ain’t no mountain bike. It doesn’t come with mountain bike group sets, but rather with road group sets adapted for cyclocross – larger cassette ratios, and smaller front chain rings. And those road group sets are, particularly with hydraulic disc braking, 11 speed road groups. Many disc hubs meant for the mountain bike market with through axles do not support road HG Shimano/SRAM 11 speed cassettes. What about SRAM XD? It isn’t compatible with road 11 speed. The spacing is not the same.
Secondly, many disc hubs meant for the mountain bike market have higher spoke counts than is necessary for either road bikes or cross bikes. 28 holes is often the minimum hole count for disc hubs. Only a few, but growing models offer 24 hole drillings, and fewer still when we add through-axles.
Your dream ‘cross wheelset might be a 24h front 15mm through axle, with a 24h rear 142mm x 12mm 11 speed compatible rear hub. You want light weight. You want colours. You want high-end. Good luck.
Only a handful hub of manufacturers have truly embraced the Cyclocross Moderne with its wide through axles and 11 speed road cassettes. Chris King is particularly slow to respond. If you own a ‘cross bike that uses a 142×12 rear and runs 11 speed shifting, Chris King has nothing for you. Not yet. Tune supports 11 speed for their disc hubs, but a 142×12 is limited to 32 hole drilling only. That’s overkill for a cross wheelset you want to race with.
There are a few brands that do supply what you need for your modern cross bike. I’ve provided some estimated build weights for these with either Pacenti SL25 Disc rim, a new rim from Kirk Pacenti, or Zed Wheel Works 38mm deep, 23mm wide carbon tubular rim of the CrossRock CX custom build:
|Brand||Hub Model||Front Specs||Rear Specs||Colours||Weights|
|Weight||Drillings||Axle Options||Weight||Drillings||Axle Options||Freehub||Hub set||Wheelset: Pacenti SL35 Disc/CX-Ray||Wheelset: WC38T CrossRock CX Carbon/CX-Ray|
|DT Swiss||DT 240 SP Centerlock||118g||28,32||QR, 15TA, 20TA||216g||28, 32||QR, 135×12, 142×12||9/10s Shimano, 11s Shimano, Campy||Black||334g||1492g||1298g|
|Industry Nine||CX/Disc||110g||24, 28,32||QR, 15TA, 20TA||245g||24, 28, 32||QR, 135×12, 142×12||9/10s Shimano, 11s Shimano||Blue, Black, Gold, Green, Orange, Pink, Purple, Red, Silver, Turquoise||355g||1513g||1320g|
|DT Swiss||DT 350 SP Centerlock||130g||28,32||QR, 15TA, 20TA||257g||28, 32||QR, 135×12, 142×12||9/10s Shimano, 11s Shimano, Campy||Black||387g||1545g||1350g|
|White Industries||CLD||145g||24, 28, 32||QR, 15TA, 20TA||265g||24, 28, 32||QR, 135×12, 142×12||9/10s Shimano, 11s Shimano||Blue, Black, Gold, Green, Purple, Red, Silver||410g||1568g||1375g|
|BHS (Bitex)||MTB180 & MTB270||182g (15mm TA)||24, 28, 32||QR, 15TA, 20TA||267g (142×12)||28, 32||QR, 135×12, 142×12||9/10s Shimano, 11s Shimano||Black, Red||449g||1607g||1413g|
|Hope||Pro 2 EVO||181g (15mm TA)||28, 32||QR, 15TA, 20TA||306g (142×12)||28, 32||QR, 135×12, 142×12||9/10s Shimano, 11s Shimano||Blue, Black, Green, Grey, Purple, Red, Silver||486g||1644g||1450g|