About Zipp 404 Wheels Clincher: The fastest just keep getting faster. The 404 wheelset is our most popular wheelset ever. It's devised to work with your fork and frame to provide superb aerodynamics over the widest range of conditions using the widest range of frames and forks, and every tire. Time trialists and road racers everywhere have made the 404 the premier choice world wide for good reason. You have to slow down sometime, so the 404 wheelset features our exclusive Silica-Ceramic braking surface for responsive deceleration wet or dry. There are no shortcuts in this demanding process; what you get is the result of hours of meticulous hand labor married to cutting edge technology. 788g front, 884g rear Tubular The 404 composite tubular is the classic Zipp wheel ridden to hundreds of World and National championships, dozens of Olympic medals, major Tour stages, world records and countless individual victories large and small. And you thought that they couldnt get any faster. The pioneer in structural co-molded carbon fiber rims with welded and machined alloy braking surface, M2cm technology has produced a lighter, stronger, stiffer and yet more agreeable rim than ever possible before. This rim transfers 10.9% less impact force to the rider than the standard aluminum traditional alloy rim and diminishes subsequent remaining vibrations nearly 30% faster. We understand that after six hours in the saddle every road seam can feel like the world's largest pothole, so no stone was left unturned as we sought to design the first high frequency suspension system for your road or TT bike. Patent pending ABLC dimpling technology allows the air to flow more smoothly around the rim resulting in less drag. Clincher Our most popular clincher wheelset ever, the 404 is crafted especially for people who demand the ultimate performance this side of disc wheels without trading the convenience of clincher tires, and who expect the kind of all-day comfort that makes it easy to train and race on the same wheels. The 404 tubular rim provides improved airflow management over a wider range of tire styles and widths while improving cross-wind stability in even severe conditions. You don't ride in a wind tunnel (unless you are really strange) so our wheels are always created for the real world where true performance is the result of a range of characteristics. The 404 clincher is super for both Roadies and Triathletes alike. The 404 excels in all events with high-quality performance proven aerodynamics, longevity and higher level comfort. Available in clincher, tubular, cyclo-cross, track, PowerTap and Clydesdale versions. Note: For these wheel sets (aside from track, Clydesdale and cyclo-cross) we recommend the rider weigh 200lbs (90Kg) or less. The key to total performance lies in a keen understanding and application of aerodynamics. Now you can love the performance even more with this years 404 Clincher wheelset. At 180 grams, the 404 aluminum extrusion achieves a variance of plus or minus 1% in extrusion weight where the best previous industry standard was plus or minus 10% on conventional rims. The rim shape is multi-patented. The dissimilar materials are melded into a unified whole that exhibits the best properties of each. Zipp specified thermally conductive brake pads ensure fantastic braking performance and rim longevity. The 404s multi-patented rim shape is devised to offer the best aerodynamic performance over the widest range of real world conditions using a range of available tires. Even with all the recent refinements and additions to the Zipp product line, the 404 (58mm) wheelset is still the Champ! This adaptable wheelset has reigned supreme in World Ironman Championships, numerous CSC and Phonak Tour de France stage victories, and countless personal bests all over the world in every cycling discipline. The overall lightness of the 404 wheelset is truly amazing, at only 1292 grams for the set, the 404 tubular weighs nearly what the 303 tubular weighed only 3 years ago. The result is the lowest rotational rim mass of any alloy clincher available, which means quick acceleration and efficient transfer of power courtesy of lateral stiffness more than double that of any conventional rim. Weights 570g front, 682g rear Back to Zipp Wheels. An ICT process Carbon Fiber rim element is hand built and molded inside the precision alloy extrusion in a single seamless procedure. After exhaustive testing, the 2005 404 clincher rim surface has yet again been refined to better manage the airflow around the rim, resulting in slightly lower drag numbers without change in lateral stability in even the fiercest cross-winds. You have to love the convenience of today's clincher technology. This innovation will save you between 1 and 3 watts of power. Light weight alone does not make a fast wheel. The result is more comfort and improved handling through improved ground contact. By adding this dimpled surface, you can expect to save 1-3 watts of power. Each year the 404 package only gets through the improvements made to the Zipp 202 rear and Zipp 84 front hubs combined with Sapim CX-Ray spokes, and improved materials throughout the design. The 700c 404 clincher sports an aerodynamic dimpled surface. Don't let those good looks fool you: the patent pending aerodynamically dimpled pattern is an extremely ruthless controller of air resistance that delivers an average gain of 1 to 4 watts of energy in very nearly all conditions and races. Patent pending ABLC dimpling technology applied to the surface of the rim (700c only) allows air to flow over the rim with a minimum of separation resulting in lower drag. The 404 has dominated across the full spectrum of racing applications. For 2005, 700c 404s have received ABLC dimpling technology to the surface of the rim allowing you to go that much faster. The reduction in vibration frequency provided by Zipps VCLC technology shows that while the 404 clincher rim is nearly half the weight and double the lateral stiffness of an all aluminum box style rim, the 404 clincher rim has a LOWER natural frequency when subjected to vertical inputs. Zipps exclusive ICT process combined with VCLC technology results in 58mm deep section rims that more than double the lateral stiffness of conventional alloy rims while the weight at the outer edge is up to 75% less than that of traditional rims. Any rider looking for the highest aerodynamic performance in a clincher race wheel, who wants to race and train on the same wheelset and who demands light weight and longevity will find the 404 clincher the optimal choice. It's quick. It's fast at speed and handles like a dream through the corners. It is perfect for time trails, long solo breaks and any application where efficiency and ultimate sustainable top end speed are paramount. Triathlon, road racing, sprinting, time trials. you name it, 404 is the universal master that has earned its place as our top performer and the choice of elite cyclists everywhere. VcLc technology improves the wheel to ground contact for precise control while reducing rider fatigue. Thousands of hours of research coupled to tens of thousands of road miles and a fanatic attention to detail have gone into today's 404.