Shimano goes to 11 with new Dura-Ace

  • By Nick Legan
  • Published May. 31, 2012
  • Updated Oct. 30, 2014 at 10:11 AM EDT
The C75 is only offered in a carbon tubular version. The new rim is 24mm wide and much more bulbous in profile than before. Photo: Nick Legan

Wheels: Shimano goes wide

Remember that you must use one of Shimano’s new wheels (or a Mavic wheel) to run the new 11-speed groups. The new wheels are, however, backwards compatible. You can run a 10-speed cassette on the newest offerings with use of a 2.85mm spacer. Thankfully, Shimano’s new wheels look fantastic.

Every rim is wider than before, in both the Blade and Accelerating Speed series. The “D2” rim profile is entirely different as well. Like most wheel manufacturers, Shimano tested its wheels in the wind tunnel and saw marked improvement with the new, wider shapes.

The Blade wheels are, as you would imagine, Shimano’s newest aero wheels. The C50 will come in both clincher and tubular versions while the C75 wheels are tubular-only. Both tubular versions will have a 24mm wide rim, with hidden nipples. The C50 clincher rim is a tad narrower with its 23mm aluminum braking surface.

The new Shimano rear wheels feature a 2:1 spoke ratio, with twice as many spokes on the driveside. Rear rims are offset and the non-driveside flanges are moved outboard by 7mm to help with wheel stiffness.

In the Accelerating Speed line, Shimano will offer the C35 and C24 in clincher and tubeless versions. Both receive an updated rim profile, which is wider and rounder in nature.

All use Shimano’s Dura-Ace hub internals and a new all-titanium freehub body.

Wheel details:
C24 tubeless: 1,454g (rim weight: 420g), $1,500
C24 clincher: 1,364g (rim weight: 383g), $1,400
C35 tubular: 1,362g (rim weight: 362g), $3,000
C35 clincher: 1,488 (rim weight: 439g), $2,200
C50 tubular: 1,449g, $3,200
C50 clincher: 1,672g, $2,400
C75 tubular: 1,545g, $3,500

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FILED UNDER: Bikes and Tech TAGS: / / /

Nick Legan

Nick Legan

After graduating from Indiana University with honors and a degree in French and journalism, Nick Legan jumped straight into wrenching at Pro Peloton bike shop in Boulder for a few years. Then, he began a seven-year stint in the professional ranks, most recently serving for RadioShack at the Tour de France and the Amgen Tour of California. He also worked for Garmin-Slipstream, CSC, Toyota-United, Health Net and Ofoto. Legan served as the VeloNews tech editor 2010-2012 before sliding across the line into public relations.

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