Zipp's Firecrest 303s give you the speed to take the hole shot and the control to maintain it. Built on ultra rigid 45mm-deep carbon rims, they slice through the mud, sand, and wind with predatory force, always hungry for the win. At 28.5mm-wide, the rims offer an extra-wide platform so you can run lower tire pressures for diminished rolling resistance and better grip in the corners, all without the fear of flatting. Disc-compatibility reigns in an era of smooth, dialed braking control, which translates to more speed and less wasted energy. Zipp's stiff hubs and Sapim CX-Ray spokes provide the finishing touches.