Zipp Replacement Tyre 404 Tub Firecrest 24H

If you had to choose just one wheel, the 404 Firecrest Tubular should be your choice. With the depth and shape proven in all conditions, it’s the all-around performer and the standard by which all other wheels are measured. The 58mm rim profile is a classic in Zipp®’s arsenal that dates back to the early 1990s. A favorite of pro athletes, the 404 Tubular has won many Grand Tour stages, ITU triathlons and Ironman® titles.
At the center of the 404 Firecrest Tubular is Zipp’s 77/177 hubset with best-in-class durability and improved bearing protection with no pre-load adjustment needed. The result is improved stiffness, durability, simplicity and versatility.Firecrest technology, with rims that maintain a near-constant width almost all the way to the spoke bed, is the first aero profile that effectively controls airflow around the back half of the wheel. Firecrest wheels offer stable, predictable handling at every wind angle by moving the center of pressure – the focal point of side forces on the rim – to its optimal location near the steering axis. A wider rim and proprietary resin system and manufacturing process increases lateral stiffness for sprinting and cornering yet offers greater vertical compliance for more control, comfort, and durability on rough surfaces.
Each 404 Firecrest Tubular wheel comes with Tangente Platinum Pro brake pads, Zipp Integrated Valve Extender with valve-core wrench, and quick release.

Specifications:

- Set Weight 1505g
- Max recommended rider weight 250lbs

Front Wheel:
- Weight:665g
- Hub Used: 77
- Rim Depth: 58mm
- Brake Track Width (center): 25.34mm
- Max Width: 26.53mm
- Spokes: Sapim® CX-Sprint
- Spoke Count: 18
- Spoke Pattern: Radial
- Spoke Length: 248mm
- Track Adaptable:No
- Dimpled Surface: Yes
- Nipples: Sapim®
- External Nipples: Yes

Rear Wheel:
- Weight: 840g
- Hub Used: 177
- Rim Depth: 58mm
- Brake Track Width (center): 25.34mm
- Max Width: 26.53mm
- Spokes: Sapim® CX-Sprint
- Spoke Count: 24
- Spoke Length Non-Drive: 260mm
- Spoke Pattern Non-Drive: 2 cross
- Spoke Pattern Drive: 2 cross
- Spoke Length Drive: 258mm
- 11-speed compatible hub: Yes
- Track Adaptable: No
- Dimpled Surface: Yes
- Nipples: Sapim® Secure Lock
- External Nipples: Yes
- XDR Driver Body Compatible: Yes


Technology:

- ABLC™ (Aerodynamic Boundary Layer Control): Advanced Boundary Layer Control (ABLC) refers to the patented and instantly recognizable dimpled pattern found on all of our carbon rims. ABLC smoothes airflow across the rims surface and is tailored to every model from the 202 to the Super-9 Disc. The third-generation of ABLC has up to four times more dimples than before.

- VCLC™ (Visco-Elastic Constrained Layer Control): Visco-Elastic Constrained Layer Control (VCLC) uses a vibration-absorbing material sandwiched between layers of rigid carbon laminate in the rim. When the wheel receives an impact from the road, much of the shock is absorbed by the VCLC system, delivering a 10% reduction in vibration.

- Carbon Bridge™: Carbon Bridge uses a Kevlar® thread in a co-axial helix stitch to bind sheets of carbon to each other in our tubular rims. Because Kevlar is 350% more impact resistant than carbon, it can disperse shock more evenly throughout the carbon laminate, making for a rim that is practically bulletproof. In particular, Carbon Bridge reduces the vulnerability of the rims tire bed, the area most susceptible to damage from impact.

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