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Zipp
404 Firestrike Carbon Clincher Road Wheel

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Rare sight.

Since they're part of a limited edition run, Zipp's 404 Firestrike Carbon Clincher Road Wheels aren't the default choice for the French team AG2R La Mondiale. They're also not one of the more common sights at the start line of the local omnium series. Were they produced in a batch larger than 404 pairs, they might be as ubiquitous as the 404 Firecrest wheels that they're loosely based on. But they're not, so — though we see Zipp's heraldry in every mass start, T1, and bunch finish — the limited edition 404 Firestrikes will no doubt continue to be a rare sighting.


The most welcome updates separating the Firestrike from the Firecrest manifest in the rim shape and brake track. The rims were reworked to produce a 34% net reduction in side forces from crosswinds and unfriendly yaw angles, making for more predictable handling in the conditions you'll likely experience in an actual race, not just a wind tunnel simulation. The Aerodynamic Boundary Layer Control (ABLC) dimples also got an upgrade, appearing across the 404 Firestrike's surface in greater number with smaller diameters than on the Firecrest models, resulting in yet more stability at speed.


Zipp christened the new brake tracks "Showstopper," a glamorous name for a fairly simple — yet effective — design feature. Showstopper involves a unidirectional molded pattern imbued with silicone carbide particles for increased modulation control and grab while braking in wet conditions. Zipp claims that this technology allows the Firestrike brake track to mirror aluminum rim braking when things get rainy when paired with the included Platinum Pro EVO Brake Pads, eliminating worries of poor braking that can plague carbon rims in wet weather. The leading edge clears debris and channels water off of the rim, allowing the chasing edge of the pad to gain purchase on the textured brake surface.


The new Carbon Shield construction process further refines Zipp's rim building, dropping a claimed 20g compared to the Firecrests without sacrificing the latter's cobblestone-worthy durability. Even the graphics are in on the weight loss act, with Zipp using its new ImPress direct-print styling for embellishment that doesn't add even the scant grams of a typical decal set.


At the center of the wheels sit Zipp's super smooth 88v10 (front) 188v10 (rear) hubs, which feature Ceramic Speed bearings instead of the Firecrest's steel bearings for fluid rolling that ensures the maximum number of watts are converted into forward motion. The wheels are rounded off with details almost as impressive as the bearings, including titanium skewers, valve extenders made by Silca, a wheel bag, a set of Zipp Platimum Pro Evo brake pads, and a wider internal rim width that makes for more vertical tire sidewalls to smooth bumps and provide more confident cornering.


Rim Material
[rim] carbon fiber
Wheel Size
700 c
Rim Depth
58 mm
Rim Width
[external - max] 27.5 mm, [external - brake track] 26.4 mm, [internal] 17.25 mm
Brake Compatibility
rim
Hubs
front Zipp 88v10, rear Zipp 188v10
Skewers
titanium
Spokes
Sapim CX-Ray
Spoke Nipple
Sapim external
Spoke Count
[front] 18, [rear] 24
Max Rider Weight
250 lb
Wheel Bag Included
yes, 1 per wheel
Claimed Weight
[front] 725 g, [rear] 895 g, [complete set] 1,620 g
Manufacturer Warranty
2 years

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