Zipp makes the impossible possible with their Firecrest 303s—they're equally at home on the flats as they are in the mountains. The 45mm-deep rims slice through the wind with more efficiency than many deep-section wheels thanks to their 28.5mm-wide dimpled rims. By creating a seamless junction between rim and tire, the increased width results in less drag. The 303s climb with the best and re-accelerate out of corners like rockets since they barely register on the scales, which makes them a must-have on undulating terrain. The extra wide rim also allows you to run wider tires at a lower pressure with less fear of pinch flatting, which boosts ride quality and comfort and reduces rolling resistance. Zipp’s stiff hubs and Sapim CX-Ray spokes provide the finishing touches.
|Spokes (Front/Rear)||Sapim CX-Ray|
|Weight (Front/Rear)||870 grams|
|Cassette Compatibility||Shimano/SRAM/Campagnolo (cassettes sold separately)|
* Subject to change without notice.
|Shimano/SRAM / White Decal||710845741005||00.1918.138.000|
|Shimano/SRAM / Black Decal||710845741012||00.1918.138.002|
|Campagnolo / White Decal||710845741029||00.1918.138.004|
|Campagnolo / Black Decal||710845741036||00.1918.138.006|