Stans Arch Rim MK4 | Trail Ready 27.5 + 29

The new Stans Arch MK4 is ready to own every trail. WideRight optimised for maximum stability with 2.2″ to 2.5″ tyres, Stans expanded the internal width out to 28mm while keeping the rim incredibly light. The 27.5″ Arch MK4 weighs only 451g. Hand built here in Sussex with a variety of quality hubs from Hope, DT Swiss and Chris King.  Use the configurator to spec and order your new Stans wheelset now.

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The Stans Arch Rim MK4:

The original Arch rim helped introduce the world to tubeless technology but a lot has changed in the world of mountain biking a decade on! The new Stans Arch MK4 rim has evolved to match these more capable bikes. It now has a 28mm wide asymmetric rim shape and is made from ultra-strong 6069 alloy. Through all the years of testing and refinement of this rim, one thing has never changed: versatility. Now more than ever, when you want a reliable rim that can handle every trail, the Arch MK4 is for you.

The Stans Arch MK4 rim is light for XC racing but being born from research and testing on the Enduro World Series circuit, it’s simply 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.

The Stans Arch MK4’s BST-Asymmetric shape improves spoke angle, allowing for a stronger overall wheel build. Unlike most asymmetric rims that struggle with tubeless inflation and consistent airtight seal under hard cornering, the Arch MK4’s shape is designed to equalize pressure for easy inflation and incredibly strong tire retention on both sides of the rim.

Stan’s patented Bead Socket Technology, combined with a stronger asymmetric design, light and durable 6069 alloy, and the perfect rim width for balancing control and weight, makes the Arch MK4, your best choice for all-around riding. Powering up rocky switchback climbs or slapping berms on every descent, the Arch MK4 is ready for whatever you can throw at it.

Strada Says:

The Stans Arch MK4 rims are the most versatile of all Stan’s rims. They are ideal for a such a wide range of trail riding. They have an internal width of 28mm which is optimised for 2.2-2.5” tires and an offset of 2.5mm. Available in 27.5”, and 29”, the 27.5” Arch MK4 rim weighs 451g, while the 29” version weighs 481g. We think they work best with the high quality brass A.B.S anti vibration locking nipple, which although more expensive does prevent loss of spoke tension. Hubs: We can build these with Hope Pro 4, DT Swiss 350 and DT Swiss 240s and Chris King ISO. We usually build these 32 hole 3 cross lacing with double butted stainless black spokes. If you are a bigger rider then we may opt for our E-Plus spokes.

The Stans Arch MK4 Rim Specifications:

  • Internal Width: 28.0mm
  • External Width: 31.4mm
  • Depth: 18.9mm
  • Hole Count: 28 or 32-hole
  • Drilling Style: 561mm, 2.5mm Offset mm (27.5″) / 600mm, 2.5mm Offset (29″)
  • Color: Black
  • Material: 6069 Aluminum Alloy
  • Brakes: Disc only
  • Rim Weight: 451g (27.5″) / 481g (29″)ERTO: 584×28.0 (27.5″) / 622×28.0 (29″)
  • ISO: 27.5″x31.4mm / 29″x31.4mm
  • Tape: 30mm
  • Valve: 35mm Presta
  • Spoke Tension: 130kgf (1275N)
  • Max Rider Weight: 286lbs (130 KG)
  • Max Pressure with 2.22″ Tyre: 41psi
  • Max Pressure with 2.5″ Tyre: 35psi

Additional information


Rim Material


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