With accolades that include being the first carbon rim tough enough to win on the Paris-Roubaix cobbles, the latest iteration of the Zipp 303 Firecrest Carbon Clincher rear wheel maintains its place as an astoundingly advanced road bike wheel.
If the Viscoelastic Constrained Layer Control rim construction sounds complicated, it’s because it is. In essence, the layers of rigid carbon fibre laminate have a vibration-absorbing material sandwiched between them, reducing road vibration by as much as 10% over a standard carbon construction.
The Firecrest aerodynamic rim profile has been thoroughly honed and perfected in the wind tunnel to do more than just reduce high speed drag. Compared to other rims of similar (and sometimes shallower) depths, the Firecrest shape substantially reduces the effect of crosswinds on your bike, giving you the stability and confidence to keep the hammer down when your competitors must relent.
The 77/177D hubset on the Zipp 303 carbon clincher tubeless disc wheels are an excellent example of Zipp’s advanced engineering design. The star-flanged straight-pull hub shell evenly distributes spoke tension forces, making sure that the bearing bores stay round and don’t change shape under the stress. This minute attention to detail is just one of the reasons Zipp’s wheelsets have a competitive edge. They’re ultra-reliable, built with incredible precision, and designed for the ultimate performance.
Tarmac, asphalt, or cobbles. The Zipp 303 Firecrest Carbon Clincher rear wheel is full of technical tricks to make sure that when you put the power down, every watt of effort makes it to the road surface.
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