Zipp 404 Firecrest Carbon Clincher Rim Brake Wheel - Rear

The Zipp 404 Firecrest Carbon Clincher Rim Brake Wheel - Rear is one of the most recognizable aero carbon wheels in road cycling — a 58mm deep-section rim built on Zipp's Firecrest toroidal profile, designed to deliver meaningful aerodynamic performance without the crosswind unpredictability that plagued earlier deep-section designs. For riders on quality rim brake road bikes, the 404 Firecrest represents a genuine performance upgrade: a wheel that works in real racing and riding conditions, not just on flat time trial courses in calm air.

The defining characteristic of the 404 Firecrest is the rim shape itself. Where older V-profile carbon rims used a narrowing taper toward the braking track, Zipp's Firecrest design uses a bulged, toroidal cross-section — wider at the mid-section of the rim than at the bead seat. Zipp's goal with this profile was to reduce both aerodynamic drag and the side force generated by crosswinds, which makes the 58mm depth more manageable in variable conditions than its depth would suggest. A rider who might feel uncomfortable on a traditional 60mm V-section rim will typically find the 404 Firecrest more predictable in crosswinds, which matters when you're descending fast or riding exposed roads. At 58mm, it still sits firmly in deep-section territory — shallow enough to climb without significant penalty on moderate gradients, deep enough to generate real aero benefit at race speed on flat and rolling terrain.

The rim uses carbon fiber construction with a UD (unidirectional) fiber finish and adhesive decals, which gives it the clean, matte appearance associated with performance carbon wheels. The braking surface is the carbon rim itself, which requires compatible brake pads — typically cork-compound or carbon-specific pads rather than standard rubber blocks. The rim has a 16mm internal width, appropriate for traditional clincher tires in the 23mm to 28mm range. Maximum tire pressure is 125psi, and Zipp rates the wheel system for a maximum rider and equipment weight of 250lbs. Bearings are cartridge-type stainless steel, which offer predictable longevity and straightforward replacement when the time comes.

This is a rear wheel, sold individually. It is available with a Campagnolo driver body or SRAM/Shimano Road driver body — the SKU on the RA Cycles page (WH-404-CCR-A1) corresponds to the Campagnolo compatibility version. The axle is quick release, which is standard for the rim brake road bikes this wheel is built for. Whether you're building a matched 404 Firecrest pair, replacing a rear wheel, or upgrading the rear of an existing wheelset, the compatibility and interface are consistent with any QR rim brake road bike.

The case for a rim brake carbon aero wheel is straightforward: there are a significant number of well-built, high-quality rim brake road bikes still in active use — frames built around Shimano Dura-Ace, Campagnolo Super Record, and similar groupsets that perform exceptionally well and don't need replacing just because disc brakes have become the default on new builds. The 404 Firecrest is the kind of wheel that makes those bikes meaningfully faster and more capable without requiring a frame change. At $795, it represents a substantial discount from its original retail price, making it an accessible entry point into serious carbon aero wheel performance for riders who know what they're looking for.