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Zipp 404 Firecrest Carbon Clincher Rear Wheel

Speed, strength, responsiveness, resilience, stiffness, comfort, control. All of these descriptive words have been used to review the Zipp 404 Firecrest Carbon Clincher wheel concept. The 404 Firecrest has been Zipp's supreme aero and stable rim concept, one that has dominated racing of many genres and has been long imitated but never matched. The incredible aerodynamics, great control, and race results caused a chain reaction in the industry. Now Zipp has paired the convenience of the Firecrest carbon clincher technology with a solid hub and lacing design for an incredible all-round wheel that as a set comes in at 1615 grams, yet is sleek and race-ready, as well as being strong and durable to everyday use, as it is rated for riders up to 250lbs. While the rim is pure engineering magic, the heart of this version is a hub concept that examined all the strengths and challenges of the previous version and answers every question, improves on excellence, and shaves off weight.

The 177 rear hub has proven to be a superior model to it's predecessor. This design optimizes the strength and stiffness of the machined aluminum body and offset flanges, allowing for greater tension with the 24 straight-pull Sapim CX-Sprint steel spokes and standard Sapim external nipples. A completely new bearing system was developed with higher grade steel sealed cartridge bearings with pre-adjusted pre-load. No need to adjust your hubs, ever. The 17mm oversized alloy axle system is stout and carries the incredible lateral loads achieved while sprinting, climbing out of the saddle, and on high speed, twisting descents. The 177 hub is also more user friendly when swapping out freehubs, or changing to a SRAM XDR driver. There is no need to re-dish the wheel for such changes. Regardless of the freehub required, engagement is smooth, immediate and confident.

The 58mm deep Zipp 404 Firecrest Carbon Clincher rim has a moderately wide stance that improves overall feel, handling and ride quality. It has a moderately wide 25mm max rim width, with a 16.5 mm internal clincher bead width. Firecrest rims have a near-constant width from brake track to spoke bed to improve aerodynamics and better control airflow. Zipp used Computational Fluid Dynamics software analysis to maximize the aerodynamics of the rim and dimpled ABLC surface while minimizing wind-produced torque, resulting in a rim design that is faster and better handling. The airflow is managed over the rim and passes more cleanly over the tire, which has less of a bulb-like shape than if the rim was narrower. The aerodynamics exceed that of the exceptionally fast previous generation 404 rim, yet is much more stable on any surface, and in heavy wind, with substantially improved braking. The brake track stays at 25mm at the center, to ensure compatibility with most road braking systems. The braking surface features the molded in-groove ShowStopper™ technology that ensures excellent stopping power in wet, dry, or hot conditions. Optimal performance is achieved with the supplied Zipp Tangente Platinum Pro Evo brake pads. The Silicon Carbide particles employed in brake track resin add extreme hardness, making the track impervious to incidental damage. This combination of tech is called Showstopper, and the results are impressive and effective.

Most road racers want the best of everything and a quiver of wheels to choose from. Unfortunately, we all can't afford such luxury. The 303 Firecrest has a strong reputation as the best all-around wheel, but if you weigh aerodynamics and pure speed higher than maximum versatility, the 404 has to be the choice, and it is plenty versatile itself. The carbon clincher technology means the convenience of clincher tires is raceworthy. Again, everyone would love tubulars as well, but again, you have to put your money and time where you get the best return. You can race and train on the same wheels, which leads to a comfort level that makes you a better rider. This 177-equipped rear wheel weighs only 905 grams, and rides even faster than expected. Every rider can enjoy the joy of riding pro-level wheels with incredible engineering and execution, from the master's of speed, Zipp.


  • Lightweight 58mm profile carbon clincher rear wheel with new hub and lacing system
  • Ideal for racing road or challenging tri and cross courses
  • 58mm deep Firecrest rim has 25mm max rim width, CFD driven aerodynamics
  • Firecrest ABLC dimple pattern designed with rim profile resulting in a combination that is both low drag, yet very stable and predictable even in heavy wind
  • Molded in-groove ShowStopper™ brake track technology
  • 16.5mm internal clincher bead width ideal for 22-28mm clincher tires
  • 25mm wide brake track at center
  • 177 machined aluminum hub features optimized offset flanges, oversized alloy axles
  • Improved bearing grade and seals, bearing pre-load is pre-set by Zipp
  • Easy freehub change system, multiple options including SRAM XDR driver
  • Sapim CX-Sprint steel, straight-pull spokes, Sapim external nipples, 24h, laced 2x
  • Newly designed quick release has wider handle, better leverage, and aerodynamics
  • Includes: QR, Tangente Platinum Pro Evo brake pads, Zipp Integrated Valve Extender with valve-core wrench, rim tape
  • Max rider weight: 250lbs
  • Max tire pressure: 125psi
  • Options: Shimano/SRAM 11, SRAM XDR, (Campagnolo option available)
  • Color: Black
  • Weight: 905 grams