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Built using Easton's ABC (Armored Ballistic Composite) Technology, the EC90 XC Carbon 26in Wheels contain the same material used in lightweight body armor. So, not only are Easton's EC90s ridiculously light, they're also extremely strong -- perfect for race-day or just practicing for race day.

In comparison to the alloy EA90 XC wheels, the big difference for the EC90 XC carbon wheels is the new composite rim and the loss of a half pound of rotating mass. This weight reduction amounts to serious seat-of-the-pants performance gains. The rims combine carbon fiber with high modulus polyethylene, or HMPE (although you might know it as Spectra) in an epoxy resin system that has been rubberized to further add impact strength. The combination of these materials gives them a superior strength to weight ratio.

They also have the UST tubeless logo, which means that they are guaranteed tubeless compatible -- and possess all of the shaping and structural requirements to meet the stringent standards for certification. In practical terms, you can seat a UST tire on these wheels by hand and with only a floor pump, no mess and no fuss. Creating a UST approved rim is tricky, but Easton found a great way to get around the task of eliminating the spoke penetrations in the outer wall of the rim.

The straight-pull Sapim double-butted spokes are placed in the hub in a 3-cross pattern as usual. They're both internally and externally threaded. When the spokes are drawn into the nipple, it is simultaneously threaded into the inner wall of the rim. They can be trued exactly like a wheel with standard nipples. Only the included valve stems pierce the entire cross-section of the rim. The hubs for the EA90 XC Carbon Wheels are machined from aluminum and house standard cartridge bearings for easy serviceability.

The front is available in two versions, standard quick release or 15mm thru-axle. The rear hub is available as a standard quick release or 12mm x 135 or 142mm spacing. The Easton EC90 XC Carbon 26in Wheel have rims that are 19mm wide on the inside to allow the fitment of tires for cross-country racing and riding.

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