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 tyres at lower pressures for race-ready speed on or off the pavement. The 303 S is among our lightest wheelsets, optimized for top aero performance with a 28mm tire but capable of handling gravel tires up to 50mm wide.
The 303 S Series borrows design concepts from the higher-level 303 Firecrest Tubeless Disc-brake wheelset to gain speed through increased efficiency. That is achieved by creating a wheel with reduced: Wind resistance, rolling resistance, rider fatigue, and weight. The key innovation is in the 303 S Series rim design. Its 45mm rim depth is the same as its predecessor, the 302 Disc brake. But its rim width is 2mm wider, at 27mm, and its tyre bed is a full 7mm wider, at 23mm. That rim platform is designed to be the fastest with a 28mm tyre. 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 percent watt savings vs. a top peer wheel in total power required to ride 40kph on a smooth flat road with a 28mm tire, according to internal Zipp testing.
This ground breaking 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 tyres as well
76 / 176 DB hubs with Center locking interface
XDR driver body option
Wide rims optimize tyre profile to allow lower tyre pressure, especially with tubeless. The result is a larger contact patch for increase grip for confident cornering, descending, and handling in wet conditions.
Lower tyre pressures and larger volume provides a compliant ride with fewer vibrations.
Significant watt savings when running larger tyres at lower pressure.
Wide hookless rims create a seamless transition to the tyre, reducing drag.
Hookless rims: Yes
Orientation (wheels): Front
Size (wheels): 700c
Rim construction: Carbon
Tyre compatibility: Clincher Tubeless Ready
Rim depth: 45mm
Surface texture: Smooth
Brake compatibility: Disc (Center Lock)
Rim - inside width: 23mm
Rim profile: Symmetrical
Rim finish: UD fiber / Bake-On labels / Matte clear coat
Color (Decal): Standard
Nipple material: Brass
Nipple anti-rotation: Sapim Secure-Loc
Spoke type: CX-Sprint
Spoke count: 24
Spoke pattern: 2 Cross
Driver body type: n/a
Colour (hub): Black
Axle type (Wheels): TA 12x100
Axle material: Aluminium front & rear
Bearings: Cartridge - Stainless Steel
Driver Mechanism: n/a
Driver body material: n/a
Max tyre pressure: 73psi
Max recommended rider weight: 250lbs
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We send all orders as quickly as we can which is normally the same working day if ordered before 3pm (Monday to Friday excluding Bank Holidays). Small packages are sent using Royal Mail First Class, Tracked 48 and Special Delivery for higher value items. Bulkier items like Wheels, Frames and Home Trainers are sent with one of our couriers either DPD or DHL. All orders are fully insured and most will require a signature on delivery. Standard delivery is 1-2 working days. Order places over the weekend or on Bank Holiday will be sent with our next working day collection.
We have thousands of items in stock ready to despatch from our large warehouse.
- In stock - Ready to despatch - In stock in our warehouse ready to ship out normally the same working day when ordered before 3pm
- In stock - 2 - 3 day despatch - In stock in our suppliers warehouse. Once we receive your order we will order from our supplier and ship out to you as soon as the item arrives in our warehouse.
We offer an optional Next Working Day Delivery service for orders placed before 3pm. (Next Working Day Delivery when ordered Monday to Friday Before 3pm - Excluding Bank Holidays). Depending on the size and weight of the item and your postal location we send with Royal Mail Special Delivery 1pm our Courier DPD or DHL on their 24 hour service. Remote Highland and Island locations may not be guaranteed next working day.
International shipping rates are calculated by the weight and value of the items and the country they are being shipped to. To get a shipping quote just add the items to your basket and use the Shipping Estimator at the bottom of the basket page to calculate the shipping rates to your country. Depending on weight and value of your order we send with Royal Mail Standard Airmail, Signed For or Tracked service. Standard delivery time is 5-15 working days for most European countries and 5-25 working days for most other countries.
We offer DHL Express as a much quicker delivery option for Europe, US and Worldwide. Most of Europe and USA is 1-2 working day delivery. Other countries 2-4 working days.
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