Light enough to XC Race, strong enough to take on your favourite trails day in and day out. Incorporating rim technology developed on the Enduro World Series Circuit and build around the latest generation of Chris King hubs, this wheelset gives you the ultimate balance between nimble climbing and confident descending.

Each and every WBWO wheelset is individually crafted with precision in our purpose-built workshop right here in Rotorua, New Zealand, by specialist mechanics who have worked at the highest professional levels of the sport. Our wheels have proven themselves time and time again on home soil and internationally under the most demanding elite riders. We know that after your first spin on yours, you won't want to ride anything else.

STAN'S NOTUBES - ARCH MK4 RIM

Mountain bikes have changed in the decade since the original Arch rim helped introduce the world to tubeless technology. With a 28mm wide asymmetric rim shape and ultra-strong 6069 alloy, today's Arch MK4 rim has evolved to match these more capable bikes. 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 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. The 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 maintaining a consistent airtight seal under hard cornering, the Arch MK4's shape is designed to equalize pressure for easy inflation and incredibly ...