Stans Arch MK4 Disc Rim Description:

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.

Features:

• 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

Specifications:

• Wheel Size: 27.5″ or 29″
• ISO Diameter (ETRTO): 584 or 622
• Effective Rim Diameter (ERD): 561mm or 600mm
• Spoke Count: 28H or 32H
• Brake Type: Disc Brake
• Rim Joint: Welded
• Rim Dimensions: 28mm (Internal), 31.8mm (External)
• Valve: Presta
• Tire Type: Tubeless (Clincher)
• Material: Aluminum
• Color: Black
• Weight: 481g (29″)

This product is expected to become available for purchase on Friday, November 28, 2025