The Arch MK4 rim is light enough to take XC racing but was born from research and testing on the Enduro World Series circuit, making it a great rim for anyone looking to improve both descending and climbing. Constructed of light and strong 6069 aluminum alloy, with a reinforced spoke bed and 28mm internal width ideal for 2.2-2.5" tires, the Arch MK4 can get you up the climbs easier and make the descent even better. Utilizing Stan's patented Bead Socket Technology, combined with a stronger asymmetric design for balancing control and weight, the Arch MK4 your best choice for all-around riding.Versatile 28mm internal rim width optimized for 2.2-2.5 tiresLight and durable 6069 aluminum with welded joint and reinforced spoke bedBST Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel build3-year rim warranty with 1-year crash replacementItem SpecificationsBrake CompatibilityDisc OnlyBrake TrackNoneColorBlackDefined ColorGrayEyeletsNoneHub Drilling32ISO Diameter622 / Road / 29"Manufacturer Spec ERD (mm)600Rim Center Offset (mm)2.5Rim Depth (mm)18.9Rim JointWeldedRim MaterialAlloyRim Width (External)31.4Rim Width (Internal)28Tire TypeTubeless ReadyValve LengthShort 32-40mmValvePrestaWeight481Wheel Size29" Stan's No Tubes Arch MK4 Rim Rims UPC: 847746058458