Stan's NoTubes - Wheel Rear, Arch MK4 29, 12X142, Sram XDR, Gray

EXPECTED AVAILABILITY DECEMBER 2021

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 Stan's legendary easy tubeless inflation with a stronger, more balanced wheel build
New high-end premium hub
Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability
Connection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choice

Lightweight Wheels for Heavyweight Trails

The Arch MK4 is the wheelset a lot of us here at Stan's choose to ride. All-mountain, Downcountry, Trailduro-whatever they're calling it this week, when you like pushing your Limits on climbs, descents, and every kind of trail, this is your wheelset. The Arch MK4's 28mm internal width and patented lightweight, low-profile design is not afraid to climb, while being an absolute monster on the descents.

With a welded seam, reinforced spoke bed, and durable 6069 aluminum construction, the Arch MK4 rims give you the confidence to ride everything. When it comes to a consistent and reliable airtight tubeless seal, nothing beats Stan's patented Bead Socket Technology. The Arch MK4 rims feature an asymmetric design with offset spoke holes to improve spoke angle and create a stronger all-around wheel.

Unlike most asymmetric rims that suffer from difficult inflation and poor tubeless performance, Stan's BST Asymmetric design delivers all the advantages of a stronger wheel, with no compromises in tubeless performance. Nobody likes downtime, so the Arch MK4 wheelset is built with traditional J-bend spokes based on their proven strength, ride quality, and easy serviceability. Stan's has always made it easy to find replacement spokes should you ever damage your wheel, and now we've made it even easier. MK4 front and rear wheels of the same diameter all use the exactsame very common spoke length, both sides, front and rear. Serviceability doesn't get any easier than that.

Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock
brake style, with options to fit all popular axle configurations.Tubeless ready with rim tape installed. The Arch MK4 is our most versatile wheelset, and the best aluminum wheelset available forriders who want to push limits on every trail.

Up, down, and wherever the ride takes you, the Arch MK4 wheelset has it under control.

What's Included:
Arch MK4 wheels include pre-installed tape for tubeless use and presta valves.

Technology:
BST-Asymmetric, M-pulse, WideRight

Specs:

Rim Internal Width:
28.0mm

Rim External Width:
31.4mm

Rim Depth:
18.9mm

Spokes:
Spoke, Sapim, D-Light, 2.0/1.65/2.0

Nipples:
Sapim Double Square Alloy Black

Hub:
M-pulse

Hole Count:
32-hole, 32-hole

Drilling Style:
Symmetrical

Rim Material:
6069 Aluminum Alloy

Hub Color:
Black

Rim Color:
Black

Brakes:
Disc only

Rim Weight:
451g (27.5") / 481g (29")

Wheelset Weight:
1698g (27.5") / 1782g (29")

Front Wheel Weight:
773g (27.5") / 815g (29")

Rear Wheel Weight:
925g (27.5") / 967g (29")

ERD:
561mm, 2.5mm Offset mm (27.5") / 600mm, 2.5mm Offset (29")

ETRTO:
584x28.0 (27.5") / 622x28.0 (29")

ISO:
27.5"x31.4mm / 29"x31.4mm

Tape:
30mm

Valve:
35mm Presta

Max Spoke Tension:
130kgf (1275N)

Max Rider Weight:
230lbs (104 kilo)

Max Pressure with 2.20" Tire:
41psi

Max Pressure with 2.50" Tire:
35psi