Zipp 404 Firecrest Carbon Clincher Rear 10/11 Speed Road Wheel

Designed specifically to account for the differences in airflow patterns between clincher tires and tubulars, the 404 Firecrest Carbon Clincher far exceeds the aero performance of any other clincher wheelset in its class. As Zipp proved with the Paris-Roubaix-winning 303 Tubular, a wider rim offers greater vertical compliance for control and comfort on rough surfaces while increasing lateral stiffness for sprinting and cornering. The same holds true for Firecrest rims with clincher tires. And because the hook beads are farther apart, the tire itself takes on a more stable shape without adding rolling resistance.

Heavy continuous braking on carbon surfaces can cause spikes in rim temperature and tire pressure that impact performance and handling especially with clincher tires. To solve this challenge, our U.S.-based composites supplier created a new heat-resistant resin exclusively for Zipp. This technology improves heat dissipation so substantially that ours are the only carbon clinchers to pass stringent European safety testing without limitations on rider weight or brake pad options.

New for 2014, the 404 Firecrest Carbon Clincher is built with a the latest iteration of our 188 rear hub, the V9, along with new spoke-lacing pattern for the rear wheel - refinements that result in improved stiffness and durability. The new hub was developed in cooperation of superstar sprinter Mark Cavendish of the Omega Pharma Quick-Step Cycling Team and is in use by other top pro cyclists and triathletes including Pete Jacobs and Mirinda Carfrae.

Cavendish received early hub prototypes in January 2013 and logged 13,000 kilometers (8,078 miles) on continually refined variants, including his stage victories at the Giro d’Italia and the 2013 Tour de France. His feedback helped optimize the hub’s flange geometry, stiffness and weight.The new 188/V9 hub has larger precision Swiss steel bearings for increased durability. Our new virtual 3 cross lacing on both sides of rear wheel improves stiffness, achieving 3 cross stiffness in a 2 cross pattern with a new spoke geometry. The 188/V9 has 25 percent more torsional stiffness than a leading competitive hub. This measure of stiffness is crucial for the direct power transfer to the rear wheel for out-of-the saddle sprints and climbs. The new hub also is laterally (side-to-side) stiffer that its rival or predecessor.

• 11 speed compatible
• This wheelset is not tubeless compatible.
• Use 20mm rim tape with this wheelset.

• Max recommended rider weight: 250lbs

• Weight: 900g

• Hub Used: 188/V9

• Rim Depth: 58mm

• Brake Track Width (center): 24.73mm

• Max Width: 26.53mm

• Clincher Bead Width: 16.25mm

• Spokes: Sapim CX-Ray

• Spoke: Count 24

• Spoke Length Non-Drive: 252mm

• Spoke Pattern Non-Drive: 2 cross

• Spoke Pattern Drive: 2 cross

• Spoke Length Drive: 250mm

• Max Tire Pressure: 125psi

• Max Tire Pressure: 8.62 bars

• 11-speed compatible hub: Yes

• Track Adaptable: No

• Dimpled Surface: Yes

• Ceramic Bearing: Aftermarket

• Nipples: Sapim

• External Nipples: Yes

Occasionally, without notice, manufacturers change product design and/or specifications.