Stan's NoTubes

Arch EX 29in Boost Wheelset

The Arch EX 29in Boost Wheelset is Stan's NoTubes' answer to trail riders looking to tackle the gnarliest, most technical trails at speed. Borrowing the fast and light profile of the XC-specific Crest and the burly internal arch design of the gravity-focused Flow, the Arch EX is a versatile wheelset up for any terrain. It's lighter, wider, and even more durable than the original Arch, and the reinforcement of Boost hubs means the front wheel deflects less on terrain and the rear wheel transfers power with even more stiff efficiency — characteristics we're more familiar with in 26in wheels.

The Arch EX Boost 29ers utilize Stan's trademark Bead Socket Technology (BST). BST features low-profile sidewalls that provide a better seat for the tire bead and allow for a pile of benefits compared to standard rims with higher sidewalls. When run as tubeless, BST provides an exceptional seal while allowing the tire to hold a greater volume of air than rims that place the bead 2-4mm below the edge. This interface allows the tire to maintain its full shape for a wider, more stable rolling platform compared to the same tire mounted on a standard rim.

Pairing BST with the ability to run up to 30% lower air pressure than on a standard clincher wheel results in more stability, better handling, solid cornering, and better overall control. These rims are also compatible with standard tubes, and the lower sidewall drastically reduces pinch flat risk by reducing the amount of material present for the tube to pinch against. This means less time sitting in the dust wrestling with a flat at the side of the trail and more time shredding your favorite loops.

Stan's laces the Arch EX rims to extra-wide, Boost versions of its all-new Neo hubs, which feature smooth-spinning, oversized chrome bearings that glide on a stiff, strong, swaged axle. The Neo holds the bearings at a wider stance for a claimed threefold increase in strength compared to standard hub designs — gains that the wider Boost hubs only add to. It also boasts four precision pawls that simultaneously engage a forged steel 36t ratchet ring for snappy engagement. The Neo hubs are finished with Stan's new SealLock end caps for easy installation and Slip-Fit axle ends for easy conversion.