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Zipp303 S Carbon Disc Brake Wheel - Tubeless


Item # ZIPZ04L

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  • Black, XDR, 12x142mm ($675.00)
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Item # ZIPZ04L

303 S Carbon Disc Brake Wheel - Tubeless

Throughout Zipp's 30-year history, its pursuit has been speed, with a passionately focused mindset "…to make you faster." With aerodynamics reaching a natural plateau of performance progress, Zipp ushers in a new era with the 303 S carbon wheel that looks beyond air resistance to boost efficiency across the entire wheel-system, giving you "the next chapter of speed." Designed to match with your modern drop-bar bike's increasingly ample frame clearance and the real-world challenges, like gravel washboards and infrequently paved back-roads, the 303 S works to preserve your energy so you can make speed.

An all-new rim design is the key to Zipp's efficiency goals and replaces the 302 in Zipp's lineup. The now hookless tire bead (fitting a minimum of 25mm tires) allows the tire to sit deeper and fatter in the wheel bed, leaving the tire more flush with the rim — oddly enough, improving aerodynamics. You'll feel a more secure tire underneath you that utilizes a short-wide contact patch, improving traction and reducing tire deflection when aggressively diving in and out of turns. Essentially, the tire maintains its shape, corners better, and produces less rolling resistance with the hookless design compared to the previous generation.

Weight savings is another area of focus for the new 303 S. Zipp has dropped 150g, compared to the 302 wheelset. And with high-end modern bikes increasingly tipping over 18lb, this weight reduction is highly advantageous in competitive events.

Keeping you fast on the bike is also about keeping you rolling forward. And if you've experienced even five-miles of bone-wrecking washboard, you know that maintaining forward speed is challenging and uncomfortable on rough terrain. The 303 S allows you to run wide gravel tires (think 50mm) with low psi, thanks to a wide 23 mm inner rim-width, helping the tire absorb the road vibrations and reduce fatigue levels.

  • Endurance and performance lines converge in the all-new design
  • Aerodynamically optimized for road, but can run wide gravel tires
  • Decreased weight improves responsiveness and steep-slope speed
  • Updated graphics are asymmetrical and eye-catching
  • Tubeless and tubeless compatible tire only
  • Zipp continues to expand the capabilities of the modern wheelset

Tech Specs
Rim Materialcarbon (UD fiber finish)
Wheel Size700c
Tire Typeclincher, tubeless
Rim Depth45mm
Rim Width[internal] 23mm, [external] 27mm
Brake Compatibilitydisc (center lock)
Hubs76/176 DB
Front AxleTA 12x100
Rear AxleTA 12x142
Spoke Nipplebrass
Spoke Count24
Recommended Usecyclocross, gravel, road cycling
Manufacturer Warrantylimited lifetime

Actual Weight

Black, XDR, 12x142mm

Claimed Weight

Claimed weights are provided by the vendor.

Have questions? Chat with a Gearhead

[front] 711g, [rear] 819g

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

What do you think about this product?


>Rating: 5

Best bang for the $$!

I've used it several times

Are you in the market for a nice all-around carbon wheelset that doesn't cost an arm and a leg? Well, here it is. These are the perfect wheels for your road or gravel bike. You could spend another $1000 dollars of your hard-earned money to save 100g but I think you'd be better off putting that money elsewhere. These are hookless rims so not all tire brands will be compatible. Check with ZIPP before mounting your fav tire brand: https://support.sram.com/hc/en-us/articles/360050355593-What-tubeless-tires-are-compatible-with-Zipp-s-hookless-rims- But that means you can run lower pressures for a nice supple ride. Check out this helpful pressure guide from SRAM: https://axs.sram.com/guides/tire/pressure If you have any specific questions about this wheelset let me know!

>Rating: 5

Nice wheels at nice price

5 stars for the overall brand reputation, looks, ease of use, price, and quality so far. The new graphics are nice and subtle. The tubeless setup worked perfectly for me the first time. My 40mm gravel tires were easy to put on and seat with a home canister-type hand pump. I like that these are suitable for gravel or road (w/disc brake setup). If you're scrutinizing the tech specs, the freewheel hub engages "slower" (cranks turn X degrees further to engage) than some other wheels of this type, but not something I am conscious of while riding.


Hello! The overview states "Tubeless and tubeless compatible tire only"- can you confirm this will work with tubes/clinchers? I see you have clincher stated in the specs but just want to double check. Thank you!