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Overview

What Makes the Zipp 303 S the Versatile Speed Wheel?

The Zipp 303 S Tubeless Carbon Disc Brake Wheels are tubeless carbon wheels for disc-brake road bikes, and Zipp says they give riders versatility along with speed. The rim is 45mm deep with a 23mm internal width. The UD carbon hookless rim has a matte clear coat finish and runs tubeless tires only, 25mm and wider. Zipp later built its 404 S road wheel upon the groundwork laid by the 303 S.

Each wheel is laced 2-cross with CX-Sprint spokes, to a Zipp 76D hub up front and a 176D hub in the rear. The hubs take 12x100mm front and 12x142mm rear thru axles, and the rear is available with a SRAM XDR or SRAM/Shimano road driver. Sold individually as front or rear.

All the specs

MPN 00.1918.528.001

Rim Depth
45mm
Construction
UD carbon hookless, tubeless tires only
Finish
UD fiber, matte clear coat
Hub
Zipp 76D front, 176D rear
Brake Type
Disc, Center Lock
Axle
Front 12x100mm, Rear 12x142mm
Rear Compatibility
SRAM XDR or SRAM/Shimano road
Sold
Front and rear individually

From the Lab

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FAQ

Good questions

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Can I use clincher tires with the 303 S?

No. Zipp lists the 303 S hookless rim for tubeless tires only, with a minimum tire width of 25mm.

How does the 303 S differ from the 303 SW and 303 XPLR S?

The 303 S has a 45mm deep, 23mm internal rim for tubeless road tires. The 303 SW has the Zipp AXS Wheel Sensor built into a 40mm deep, 25mm internal rim for tire pressure monitoring. The 303 XPLR S is built for gravel with a 54mm deep, 32mm internal rim that works only with approved tires.

What tire widths work on the 303 S?

Zipp lists a 25mm minimum tire width for the 303 S, and its air pressure chart for this wheel covers tubeless tires from 25mm to 39mm.

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