Zipp's most versatile wheelset, the 404. Its 58 mm rim depth is a classic all-around performer that has carried athletes to victory in every kind of event triathlons, criteriums, breakaways, field sprints and even Grand Tour mountain stages. Features:Weight: F/R 700g/825gSpoke count: 16/20Hub Used: 88/18811-speed compatible Rim Depth: 58mmBrake Track Width (center):24.73mmMax Width:26.53mmClincher Bead Width: 16.25mmCeramic Bearing: AftermarketMax Tire Pressure: 125psiMax Tire Pressure: 8.62barsDimpled SurfaceExternal NipplesGlossary:FirecrestWith the new Firecrest rim shape in our 404 and 808 Tubulars and Carbon Clinchers, Zipp wheels make a bigger difference in more ways than ever. Not only is Firecrest more aerodynamic than any other rim design, it improves handling in crosswinds, wheel strength, and overall ride quality.ABLC (Aerodynamic Boundary Layer Control) Advanced Boundary Layer Control (ABLC) refers to the patented and instantly recognizable dimpled pattern found on most of our rims. ABLC smoothes airflow across the rim's surface and is tailored to every model from the 202 to the Sub9 disc. 2009 sees the third-generation of ABLC, with up to 4 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.88/188 Hub TechnologyEvery aspect of our 88 and 188 hubs sets a new benchmark. The standard steel bearings are the roundest in the industry. The 17mm axle is the stiffest of any road hub we've tested. The wire EDM-cut hub internals are the most precise. The SHIFT spoke hole technology is the most durable. When it comes to precision and performance, there's really no comparison.
