Zipp 303 Carbon Clincher Tubeless Disc Rear Road Wheel - 177D
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Just by looking at it you can tell that the Zipp 303 Firecrest Carbon Clincher Tubeless Disc rear wheel delivers an impressive aerodynamic performance, thanks to the Firecrest rim profile shape. Scratch through the surface, however, and you’ll find there’s an awful lot more going on underneath as well.
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.
Having been designed from the outset to run as a tubeless rim, the Zipp 303 Carbon Clincher Tubeless disc wheels have ridges on the internal rim bed which hook & lock into the tyre bead, making it sure it stays right where it’s supposed to, even under lower pressures. Zipp also advise that their 303 carbon clincher tubeless wheels can also be safely run with tubes in place if you choose.
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.
Make every watt count, by putting it to the ground with the Zipp 303 Firecrest Carbon Clincher disc rear wheel.
About the 77/177D hubset:
- Bearing preload precision set at the factory – there’s no need to set the preload yourself
- Improved bearing protection and sealing
- redesigned designed quick-release skewers (included) have a wider & more ergonomic handle to give more leverage for opening and closing
- Proprietary flange geometry and spoke hole attachment pattern, with Sapim® CX-Ray® spokes, optimizes the torsional and lateral stiffness without increasing weight or robustness
- 17mm axle
- Thru-axle compatible. Comes with thru-axle end caps that can be swapped by hand (12x100mm & 15x100mm)
Also in the box:
- Zipp Tubeless valve extender and valve-core wrench
- Zipp rim tape (factory taped)
- Zipp Tangente quick-release skewer
- Zipp thru-axle end caps
- Weight: 885g
- Rim Depth: 45mm
- Max Width: 29.9mm
- Internal Width: 21mm
- Spoke Count: 24
- Spoke Length: Non-Drive 272mm | Drive 270mm
- Spoke Pattern: 2 cross
- Max Tire Pressure: 125psi (8.62bar)
- 10 or 11-speed Compatible Hub Yes
- SRAM XDR Compatible: Yes
- Dimpled Surface: Yes
- Nipples: Sapim® Secure Lock
- External Nipples: Yes
- Tubeless: Yes
- The Zipp 303 Firecrest Carbon Clincher Tubeless Disc rear wheel is available with 0% APR finance
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Road Bike Wheel Guide
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