Zipp's First Full-Carbon Clincher Wheelset Features New Aero Profile and Materials
After two years of near-constant prototyping and refinement, Zipp carbon clinchers have arrived. Featuring a revolutionary aero rim shape and carbon materials found nowhere else in the world, the all-new 404 Carbon Clincher is the wheelset you've been waiting for.
Its Firecrest™ rim shape is the first deep-profile carbon clincher design to offer the superior aerodynamics, ride quality, strength, and handling of a wider rim body. Yet the 404 Carbon Clincher weighs just 1557 grams per wheelset, putting it among the lightest deep-profile carbon clinchers available. And like all Zipp carbon rims, the 404 Carbon Clincher is handmade in Speedway, Indiana.
To account for the differences in airflow patterns between clincher tires and tubulars, Firecrest employs a complex set of high-radius curves to adjust the width of the rim from 25.5mmm at the braking track to 27.5mm at the rim's widest point. This less tapered version of our proven hybrid-toroidal clincher rim shape particularly improves the aerodynamics of the rear wheel as it rotates within the frame. With Firecrest and Zipp's ABLC™ dimples, the 404 Carbon Clincher far exceeds the aero performance of any other clincher wheelset in its class.
As Zipp engineers have shown with designs like the Paris-Roubaix-winning 303 Tubular, a wider rim also increases lateral stiffness for sprinting and cornering yet offers greater vertical compliance for more control and comfort on rough surfaces. The same holds true for Firecrest rims with clincher tires. Because the hook beads are farther apart, the tire takes on a more stable shape. A shape that places more rubber on the road while cornering without adding rolling resistance. Increased air volume also reduces the likelihood of pinch flatting compared to narrower rims.
"This is a product that a lot of people have been waiting for, and we wanted to give them something unlike any other wheel on the market. We spent two years optimizing our carbon clincher technology and it's probably the biggest leap forward we've ever made." said Zipp Technical Director Josh Poertner
Heavy, continuous braking on carbon surfaces can cause spikes in rim temperature, and clincher tires are more susceptible to the effects than tubulars are. To solve this challenge, chemists and engineers from our composites supplier made repeated visits to Zipp's R&D lab to test and refine a new heat-resistant resin based on the materials used in motorsports brake systems. Available solely to Zipp, this new technology resists heat for more consistent braking performance and tire pressure on long descents.
Naturally, we've chosen to launch our groundbreaking carbon clincher designs with our most versatile wheelset, the 404. Its 58mm rim depth is a classic all-around performer that has carried athletes to victory in every kind of event - triathlons, criteriums, breakaways, field sprints, even Grand Tour mountain stages. Now, the 404 is available with the convenience of clinchers, the light weight of an all-carbon rim, and the unrivaled performance of Zipp technology.
Like all Zipp carbon wheels, the 404 Carbon Clincher uses rims manufactured in-house by Zipp, premium Sapim CX-Ray spokes (16 front/20 rear), and US-made hubs with Swiss steel bearings.
Available now through authorized Zipp retailers around the world. Suggested retail price is $2700 U.S. per wheelset.
Includes Zipp Steel Quick Releases, Tangente High Performance Cork Brake Pads, Zipp Rim Tape, and Valve Extender
• The New Zipp VukaR2C (Return to Center) Aero Shifter
• Zipp Introduces PowerTap Discs Wheels
• SRAM to acquire Zipp