Stans NoTubes Arch MK4 Rear Wheel - 27.5 12 x 148mm 6-Bolt XDR Black. The Arch MK4 wheelset is an ideal choice for All-mountain Downcountry and Trailduro- a versatile aluminum wheelset available for riders who want to push the limits on every trail. Up down and wherever the ride takes you the Arch MK4 wheelset has it under control.

Versatile 28mm internal rim width optimized for 2.2-2.5” tires

Light and durable 6069 aluminum with welded joint and reinforced spoke bed

BST-Asymmetric design combines Stan’s legendary easy tubeless inflation with a stronger more balanced wheel build

M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66 deg engagement

Enduro bearings with double-row freehub bearing

Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability

Includes tubeless tape and presta valves