Zipp | 404S Carbon Wheelset

50mm of aerodynamic speed without giving up everyday stability.

The Zipp 404 S is a high-performance 700c road wheelset designed for road racers, criterium specialists, and riders looking for an aerodynamic upgrade that remains manageable in crosswinds.

Its 50mm mid-depth hookless TSS rim uses a 23mm internal width to accommodate 28–40mm tubeless tires at lower pressures, helping improve rolling efficiency, vibration control, and handling across a wide range of road conditions. The Zipp 76/176 hubset uses three pawls and 36 points of engagement for responsive power transfer.

Important Compatibility Note

Tubeless tires only. Disc brake with Center Lock rotor compatibility. The hookless TSS rim is designed for 28–40mm tires. Maximum recommended system weight is 253 lb / 115 kg.

Key Features

• 50mm Rim Depth
Provides a mid-depth aerodynamic profile designed to balance aerodynamic performance with crosswind stability.

• 23mm Internal Width
Designed around wider 28–40mm tires and lower pressures for improved rolling efficiency and control.

• Zipp 76/176 Hubset
Uses three pawls and 36 points of engagement for quick power transfer.

• Sapim CX-Sprint Spokes
Built with CX-Sprint spokes in a 2-cross configuration for the specified wheelset setup.

• Hookless TSS Construction
The Tubeless Straight Side rim design is optimized specifically for tubeless tires.

• Lightweight Wheelset
The estimated lightest configuration weighs 1,585 g, including tape and valve.

Technical Specifications

• Category
Road Wheelset

• Discipline
Road

• Wheel Size
700c

• Rim Construction
Hookless / Tubeless Straight Side (TSS)

• Tire Compatibility
Tubeless tires only

• Rim Depth
50 mm

• Rim Profile
Symmetrical

• Rim Inside Width
23 mm

• Brake Compatibility
Disc / Center Lock

• Rim Finish
UD fiber / Adhesive decals

• Nipple Material
Aluminum

• Spoke Type
Sapim CX-Sprint

• Spoke Count
20 front / 24 rear

• Spoke Pattern
2 Cross

• Hub
Zipp 76/176

• Driver Body
Configuration dependent

• Axle Type
TA 12×100 front / TA 12×148 rear

• Bearings
Cartridge / Stainless Steel

• Maximum Recommended System Weight
253 lb / 115 kg

• Weight
1,585 g estimated lightest wheelset configuration

• Weight Breakdown
Front: 707 g / Rear: 838 g

• Included Components
Wheelset, rim tape, and valve

Fast in the wind, wide-tire ready, and built for riders who want more speed from every stretch of pavement.