Road bikes are going where they’ve never gone before, are expected to do more, and are being ridden harder than ever. At the same time disc brakes are rewriting the rules of what’s possible with rim design. For this new era, the Zipp 303 Firecrest Tubeless Disc-brake wheelset sets the new standard. With a disc-specific, tubeless rim, the 303 Firecrest Carbon Clincher is now internally 21mm wide and faster than ever. Designed from the start as a tubeless rim, the 303 Firecrest features a rim bed made with internal ridges to lock the tire’s bead in place, ensuring secure performance, even when ridden at lower tire pressures. A new carbon fiber layup keeps weight low while maintaining the 303’s legendary durability. The rim’s lightweight design allows the 303 to glide up the steepest climbs while SRAM's robust 77/177D hubset keep the wheels stiff and responsive.
Each Wheel Includes:
- Zipp Tubeless valve extender and valve-core wrench
- Zipp rim tape (factory taped)
- Zipp Tangente quick-release skewer
- Zipp thru-axle end caps
Going tubeless allows you to run lower tire pressures without the added weight of a tube. Lower tire pressure has many benefits, including greater traction, lower rolling resistance over rough surfaces, and decreased risk of a puncture-related flat.
Tubeless-ready rims and tires are parts of a complete system that eliminate the need for tubes by creating an airtight chamber between the rim and tire. Liquid sealant is added to the chamber to fill small punctures and maintain air pressure while you ride.
UST (Universal Standard for Tubeless) is a specific type of tubeless system that dictates the shape of the rim and tire bead. UST rims should be paired with UST-specific tires for best results.
|Brake Compatibility||6-Bolt Disc|
|Inner Rim Width||21mm|
|Outer Rim Width||28.9mm|
|Spokes||Sapim CX-Ray, Straight Pull, bladed|
|Axle||QR x 135mm (convertible to 12 x 142mm)|
|Valve Type||Medium Presta Valve 41-55mm|
|Extras||Conversion caps included|
* Subject to change without notice.
|QR / 142 x 12mm / Shimano/SRAM / Black w/Black Decals / 650B / 24||710845808876||00.1918.358.001||ZIP72503892K|
|QR / 142 x 12mm / SRAM XDR / Black w/Black Decals / 650B / 24||710845812972||00.1918.358.010||ZIP63214907K|