Mon-Sat 8am-5pm PT
Sign Up
Serving cyclists
since 2002
Click Here for Larger Image
Zipp 303 S Firecrest Tubeless Disc Wheelset
Zipp 303 S Firecrest Tubeless Disc Wheelset
Zipp 303 S Firecrest Tubeless Disc Wheelset
Zipp 303 S Firecrest Tubeless Disc Wheelset

Zipp 303 S Tubeless Disc Wheelset

Mfg PartNum:
Out of Stock
Ships Free!
Earn $130.00 in VIP credit. Click to Learn More.
This model is not eligible for VIP points
Please Confirm Model

Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Speed for all roads ahead.

Zipp's 303 S Firecrest Tubeless Disc-brake wheelset provides today's cyclists the versatility they demand with the speed they crave.

Expanding greatly on its heritage of conquering the Spring Classics, this 303 wheelset maintains its ideal-for-every-terrain 45mm rim depth but adds a significantly wider internal width to provide greater performance and ride quality in almost every measurable way. Road bikes are more versatile than ever, no matter the road surface, but just as fast as before. The 303 S offers an entirely new rim profile and design to optimize rider performance on this new breed of bike.

This wheelset is tubeless for disc-brake bikes, allowing the ability to run wide tires at lower pressures for race-ready speed on or off the pavement.

Lightweight. Aero. Gravel-Ready.

The 303 S is among Zipp's lightest wheelsets, optimized for top aero performance with a 28mm tire but capable of handling gravel tires up to 50mm wide.

The key innovation is in the 303 S's rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its external rim width is 2mm wider, at 27mm, and its tire bed is a full 7mm wider, at 23mm internal width. That rim platform is designed to be the fastest with a 28mm tire. The wide rim optimizes tire profile to allow lower tire pressure. That helps to reduce rolling resistance and provides a more compliant ride. The result of all this is a 10 watt savings vs. a top peer wheel in total power required to ride 40kph on a flat road with a 28mm tire, according to internal Zipp testing.

This groundbreaking wheelset also features all-new cosmetics, setting the rider apart from the pack, and comes at an attractive price.


  • New Zipp graphics and cosmetic identity that scream speed
  • Fastest with 28mm, fits wide gravel tires as well
  • Wide rims optimize tire profile to allow lower tire pressure, especially with tubeless. The result is a larger contact patch for increase grip for confident cornering, descending, and handling in wet conditions.
  • Lower tire pressures and larger volume provides a compliant ride with fewer vibrations.
  • Significant watt savings when running larger tires at lower pressure.
  • Wide hookless rims create a seamless transition to the tire, reducing drag
  • 76 / 176 DB hubs with center locking interface
  • XDR driver body option
  • Lock ring included
  • Tubeless Tires Only - These wheels are tubeless specific but can be used with a tube when needed
  • Lifetime Warranty
  • Replacement 76 /176 hub end caps sold separately.

  • FREE Cassette Installation - Order a cassette along with a wheelset and we can install the cassette for free. Cassette installation requires special tools that not all our customers have. The cassette will be professionally installed and torqued to spec. Just add "Please install cassette" to your order notes at checkout and we'll take care of you.

    B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

    Please note: This product ships signature required.

    Wheel Size: 700C/29" (ISO 622) 

    Rim Material: Carbon 

    Tire Compatibility: Tubeless Only 

    Brake Compatibility: Center Lock disc 

    Weight: 1540g (Wheelset) 

    Rim Width: 23mm internal 

    Rim Profile: Symmetrical 

    Rim Finish: UD fiber / Bake-On labels / Matte clear coat 

    Spoke Nipple: Brass 

    Spokes: Sapim CX Sprint 

    Spoke Count: 24 

    Spoke Pattern: 2 cross 

    Driver Body Type: n/a, SRAM XDR, SRAM/Shimano Road 

    Axels: 12x100, 12x142 TA 

    Bearings Cartridge: Steel 

    Driver Mechanism: 3 Pawls Leaf Spring 

    Shimano 11sp - 12x100/12x142

    Mfg PartNum: 00.1918.527.000/00.1918.528.000 

    Sram XDR 11/12sp - 12x100/12x142

    Mfg PartNum: 00.1918.527.000/00.1918.528.001 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Reviewed 3/26/2021
    by Anonymous
    Cycling Enthusiast
    New Jersey
    Value Rating
    Overall Rating
    2 of 2 customers found this review helpful.
    Fantastic wheelset, worth the wait

    This is my first pair of carbon wheels so I don't have much to compare them to other than my old Mavic Alloy wheelset that they replaced. My average pace has increase 2-3 mph on rides, which is probably more due to the aero rather than weight savings. Comfort has improved significantly since I'm running my tires 10 psi lower. Overall, these were definitely worth the price, especially with the lifetime warranty.

    One thing to be aware of is that I had a lot of problems getting the tire bead to seat on the rim. I put Pirelli P-Zero TLRs on them, which where super-easy to get onto the rim without tire levers. However, I needed to resort to compressed air to blast the bead into place. This was not an issue at all with my hooked Mavic rims.

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    Reviewed 8/14/2020
    by JNaz
    Cycling Enthusiast
    Ashburn , VA
    Value Rating
    Overall Rating
    2 of 2 customers found this review helpful.
    Fast and affordable wheels

    I got these wheels with their RT28 tires and it was simple to install. I like the feeling of the bike now that I can run them at lower pressure (in my case 55psi front and 58psi rear). They are super comfortable and have made me at least 1-1.5mph faster.

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    Reviewed 7/26/2020
    by Dduck
    Bay Area
    Overall Rating
    3 of 3 customers found this review helpful.
    Amazing wheels!

    Upgraded from the stock DT Swiss R470db wheels on my Roubaix. Huge difference! Feel like I am flying up inclines.

    Mounted them with 30c Schwalbe Pro One tires. Smoothest ride ever.

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    Reviewed 8/15/2020
    by Dave
    Cycling Enthusiast
    Overall Rating
    3 of 3 customers found this review helpful.
    Installed on Trek Emonda SL6

    Installed on my Trek Emonda SL6 and it transformed the bike from something I was going to sell, to my new favorite. These are a game changing wheelset. I am genuinely faster on climbs with these. As a nice bonus, I am also much more confident on descents and higher speed cornering on these as well.

    Was this review useful to you? Yes/No
    Thank you for your feedback.

    We are committed to delivering outstanding value and service to our customers, every day.
    Try us today to see why so many of our customers come back again and again.

    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50
    are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 34


    Want to save on all your Bike Tires Direct purchases? Sign up here for exclusive discount offers.

    BikeTiresDirect on Facebook BikeTiresDirect on Instagram BikeTiresDirect on Strava
    5741 NE 87th Ave (I-205 exit 23B) Portland, OR 97220 | 503-342-9985 | [email protected]