The 2004 high performance 303 Clincher incorporates a bundle of significant enhancements, including Zipp's latest improvements to ICT carbon fiber processing, and the maturation of performance and comfort enhancing VCLC technology.
Designed for severe racing conditions dominated by steep climbs, wicked winds, and the need for immediate acceleration, the technology-packed 303 significantly diminishes muscular road fatigue without sacrificing the convenience of clincher tires.
* Using M2CM technology, a hand-crafted Carbon rim is wed to a totally new alloy extrusion resulting in an aerodynamically superior 40mm deep clincher rim that's over 100 grams lighter than the average 30mm deep conventional alloy rim.
* For the first time on a structural carbon fiber rim, custom post machining finishes each rim to ensure a perfectly parallel, machined aluminum braking surface to provide sure and dependable braking.
* Lateral stiffness is more than double that of traditional rims while the vertically compliant carbon element ensures a comfortable riding experience over all too common rough roads.
* Zipp's exclusive VCLC technology dramatically reduces rider fatigue, particularly in the hands, arms, neck, and posterior - while greater control of the tire contact patch simultaneously improves cornering grip and minimizing rolling resistance.
* Clincher tires exhibit different aerodynamic properties than tubular tires, so we subtly alter the shape of the clincher profile to maximize the aerodynamic characteristics of clincher tires. The 2004 clincher rim is completely new with further enhanced aerodynamics, resulting from careful shaping of the rim profile to match popular tire brands and widths. As a side bonus, the new rim shape is over 15% stiffer without any weight penalty.
* Zipp's patented regenerative airfoil makes the rim appear deeper when slicing into headwinds, while improving cornering control by appearing shallower to side winds.
* The 303 wheels are ideal for criteriums and excel in road racing.
* Triathletes or lightweight riders desiring a wheel with minimal reaction to cross winds will also find the 303 Clincher a fine choice.
* In all, the new 303 clincher is an outstanding choice for fast riders demanding lightweight, aerodynamics and great overall ride characteristics with the convenience of clincher tires.
Highly Recommended:
ZIPP highly recommends the use of ZIPP Carbon/Carbon brake pads for all ZIPP rims and wheelsets. ZIPP Carbon/Carbon pads are engineered for optimal performance and rim longevity under all (including extreme) conditions with both Silica-Ceramic and Aluminum braking surfaces. ZIPP Carbon/Carbon pads are also recommended for use with non-ZIPP products. To find out more about ZIPP Carbon/Carbon pads click here.
Other recommended pads are Shimano KoolStop Black pads.
Total weight:
700c - 1627g
Wheel weights:
700c - frt. = 744g, rear = 883g

Rim Depth:
40mm Multi-patented rim profile and manufacturing technology
Clinchers feature ICT Carbon/graphite / Alloy m2cm rim with sub 180g welded and
machined alloy extrusion braking surface.
Spoke Count:
700c - 20 frt./28rear

Spoke Type:
Sapim CX-Ray spokes and alloy nipples
Hubs:
ZIPP 202 rear hub / 202g and ZIPP 84 frt. hub / 84g
Free Hub Body:
Shimano compatible.