Zipp 303 SW Tubeless Clincher Disc-Brake Carbon Front Wheel

The Zipp 303 SW Tubeless Disc-Brake Carbon Front Wheel is a 40mm-deep hookless carbon front wheel built around wide tires — the rim is optimized for 30 to 35mm tires and accepts up to 44c. It is sold as a single front wheel for disc-brake road and multi-surface bikes, and at 695g it is light for a rim of this depth and width.

The spec that separates this wheel from most road front wheels is the 25mm internal rim width paired with a 286lb / 130kg maximum system weight. That combination points it at riders who want genuine all-surface capability rather than a narrow race setup: wide tires at low pressure give a larger contact patch and better grip in the wet and on loose surfaces, while the 40mm symmetrical profile keeps crosswind behavior predictable. Unlike some hookless road wheels, tire compatibility here covers ISO/TSS-compatible tubeless tires from 30 to 44c, run with either sealant or a tube.

Who It's For

• Road and multi-surface riders running 30 to 35mm tires — the width band this rim is designed around
• Riders replacing a front wheel or building up a mixed wheelset
• Heavier riders or loaded setups, given the 286lb / 130kg system weight allowance
• Riders on SRAM AXS who want to add the Zipp AXS Wheel Sensor
• Consider something else if: you race on 25 to 28mm tires (this rim is optimized wider), you need tire pressure above 73psi, or you want a hooked rim with unrestricted tire choice

What to Look For

• Tire width drives this decision. The rim is optimized for 30 to 35mm and clears up to 44c. If your bike's fork will not take a 30mm tire, a narrower rim is the better match.
• Hookless sets hard limits. You need ISO/TSS-compatible tires and a 73psi / 5.0bar ceiling. Tube or sealant both work, but tire selection is not open-ended.
• This is a front wheel only. Plan the rear separately, and match rim depth and width if you want consistent handling front to rear.

Key Features

Rim: 40mm-deep hookless carbon, 25mm internal width, symmetrical profile, UD fiber finish with adhesive decals. The internal width lets a 30 to 35mm tire hold its designed shape instead of being squeezed narrow, which is what makes the low-pressure ride quality work.

Hub and bearings: ZR1 disc-brake hubset on custom stainless steel 61903 bearings. Stainless bearings hold up better than standard steel in wet-weather riding, and 61903 is a standard size — replacements are not proprietary.

Brake interface: Center Lock disc, and the lockring is included with the wheel. One less part to source at install.

Tire compatibility: 700c, ISO/TSS-compatible tubeless tires, 30 to 44c, tube or sealant. Zipp cites TSE for improved efficiency and reduced rolling resistance across this setup.

AXS integration: The 303 SW is Zipp's first connected SRAM AXS wheel, compatible with the Zipp AXS Wheel Sensor. Spoke lengths are 272/274mm drive side and 276mm non-drive side. The wheel carries a lifetime warranty.

Rider Intent Summary

• Biggest strengths: 25mm internal width at 40mm depth and 695g, a high 286lb/130kg system weight limit, serviceable stainless bearings, and a lifetime warranty.
• Tradeoffs: Optimized for 30mm-plus tires, capped at 73psi, and restricted to ISO/TSS-compatible tires.
• What makes it different: AXS sensor connectivity, and a tire range that runs to 44c on a rim that still measures only 40mm deep.

Victory's Take

At Victory Bicycle Studio we see the 303 SW as the right front wheel for riders whose road bike has become an all-surface bike — bring us your frame clearance numbers and current tires, since the 30mm-plus optimization is what determines whether this wheel makes sense for you.

Specifications

• Size - 700c
• Rim construction - Carbon – Hookless
• Tire compatibility - ISO/TSS compatible tubeless tires (30-44c), tube or sealant
• Rim depth - 40mm
• Brake compatibility - Disc (Center Lock), lockring included
• Rim - inside width - 25mm
• Rim profile - Symmetrical
• Rim finish - UD fiber, adhesive decals
• Hub - ZR1 Disc Brake
• Bearings - Custom Stainless Steel - 61903
• Max tire pressure - 73psi / 5.0bar
• Max recommended system weight - 286lbs / 130kg
• Spoke Length DS - 272mm, 274mm
• Spoke Length NDS - 276mm
• Weight - 695g (approximate)
• Warranty - Lifetime