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ShimanoDura-Ace 9100 C40 Carbon Road Wheelset - Clincher

ShimanoDura-Ace 9100 C40 Carbon Road Wheelset - Clincher

$1,579.99
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Dura-Ace 9100 C40 Carbon Road Wheelset - Clincher

Shimano's Dura-Ace 9100 C40 Carbon Road Clincher Wheelset brings an aesthetic update to pair perfectly with the new groupset and carries over the speedy stability we've come to expect from a Dura-Ace wheels. As with its C35 predecessor, the C40's weight is centered at the hubs to reduce rim and rotational weight so it kicks up to speed fast. Combine that snappiness with a 35mm rim depth and you get the ideal balance of lightweight responsiveness and aerodynamic speed to manage a wide variety of terrain.


The rim's construction, which is ultimately responsible for the wheelset's devoted following, remains the same. It involves an alloy body that's extruded and machined to thin the walls down to an almost two-dimensional 0.6mm wall thickness—about half of the typical alloy rim wall thickness of 1 to 1.3mm.


This obviously reduces weight to a minimum, but it also means the overall structure is less sound, so Shimano buttresses the rim with a jealously guarded carbon laminate process. The only information that the brand is willing to divulge about this process is that phosphoric acid is used to anodize the alloy, and then variable carbon layers are fused to it in order to boost its structural integrity without undoing the weight gains made during the milling process.


The result is a lightweight rim that's as durable and radially comfortable as alloy but still manages to approach the weight and drive stiffness of carbon. It also features an alloy brake track, which means it doesn't sacrifice stopping power in pursuit of weight reduction and also doesn't carry the risk of being distorted by internal pressure from the tube when it heats up during long, hot descents. Altogether, each component of the wheel has been designed as a symbiotic system for the ultimate in aerodynamics, efficiency, and pure speed.


Details

  • A versatile wheelset that balances weight and aerodynamics
  • Machined aluminum with carbon laminate drops grams, not stiffness
  • Aerodynamic mid-depth rims hold speed without impeding climbing
  • Durable titanium freehub body reduces weight
  • Wide hub flanges boost wheel stiffness
  • Aluminum brake track provides reliable braking across conditions
  • Item #SHI00DH

Tech Specs

Rim Material
aluminum with carbon laminate
Wheel Size
700c
Tire Type
clincher
Rim Depth
35mm
Rim Width
[external] 20.8mm
Brake Compatibility
rim
Hubs
Shimano
Front Axle
quick-release
Rear Axle
quick-release
Spoke Count
[front] 16, [rear] 21
Claimed Weight
[front] 1lb 5.8oz (674g), [rear] 1lb 13.4oz (834g), [set] 3lb 5.2oz (1508g)
Recommended Use
cycling
Manufacturer Warranty
3 years

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