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 tires
• Light and durable 6069 aluminum with welded joint and reinforced spoke bed
• BST Asymmetric design combines Stans legendary easy tubeless inflation with a stronger, more balanced wheel build
• 3-year rim warranty with 1-year crash replacement
• Brake Track: None
• Color: Black
• Defined Color: Gray
• Eyelets: None
• Hub Drilling: 32
• ISO Diameter: 559 / 26″ MTN
• Manufacturer Spec ERD (mm): 536
• Rim Center Offset (mm): 2.5
• Rim Depth (mm): 18.9
• Rim Joint: Welded
• Rim Material: Alloy
• Rim Width (External): 31.4
• Rim Width (Internal): 28
• Tire Type: Tubeless Ready
• Valve: Presta
• Valve Length: Short 32-40mm
• Weight: 431
• Wheel Size: 26″