The Zipp 404S Carbon Tubeless Center Lock Wheelset is a mid-depth, value-focused aerodynamic road wheelset introduced in mid-2026. It brings high-performance carbon aerodynamics to a significantly lower budget price point within Zipp's accessible "S Collection" line.
Technical Specifications
-
Rim Depth: 50mm
-
Internal Width: 23mm
-
External Width: 29mm
-
Wheelset Weight: 1,585g (including tubeless valves and rim tape)
-
Rim Type: Tubeless Straight Side (TSS) / Hookless carbon
-
Hubset: Zipp 76/176 disc brake hubs with 36 points of engagement (10° pickup)
-
Spokes: Sapim CX-Sprint steel spokes (20 front / 24 rear)
-
Max Tire Pressure: 73 psi / 5.0 bar
-
Max System Weight: 115 kg (bike, rider, and gear)
-
Freehub Compatibility: SRAM XDR or SRAM/Shimano Road 10/11/12-speed
Key Design & Features
-
Firecrest-Derived Profile: The 50mm rim profile utilizes shapes borrowed from Zipp's WorldTour-proven Firecrest design. It balances high aerodynamic efficiency on paved roads with predictable stability in crosswinds.
-
Optimised For Wider Rubber: Designed explicitly for 28mm to 39mm tyres. It is aerodynamically optimized for a 28mm tire setup running at lower pressures to minimize rolling resistance and reduce road vibration.
-
Hookless/TSS Rim Constraint: The rims require hookless-compatible tubeless or tubeless-ready tyres. They cannot be used with traditional inner tubes on non-compatible tires.
- Warranty Coverage: Even at a lower price point, the wheelset is backed by Zipp’s comprehensive, unconditional lifetime warranty and crash replacement policy.
The wheelset effectively succeeds the 303 S in bike builds requiring a paved aero focus. It bridges the gap between the shallower, all-road 303 S (40mm deep) and the elite, pro-tier 404 Firecrest (58mm deep). Zipp targets this at road riders and entry-level racers looking to upgrade asphalt performance without spending premium prices.
Front: 00.1918.802.002
Rear: 00.1918.803.0l03
