Arch MK4 - Rim
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- 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
- 3-year rim warranty with 1-year crash replacement
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 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, make 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.
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International and Expedited Shipping:
International and Expedited Shipping:
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100% Guaranteed Returns
We understand that not every purchase works out, which is why we offer a 100% satisfaction guarantee. New, unused gear in original packaging and hangtags can be returned within 30 days of purchase for a refund to your original method of payment or for an exchange.
All returns for refund will have a $8.95 restocking fee deducted from the refund amount. Excluding returns for exchange or store credit. If the original method of payment is unavailable, we will issue your refund in the form of store credit.
How to return by mail
Due to high demand, our returns process may take longer than usual. Typically, we will issue a refund within 10 business days after we receive your package. It may take up to 3 additional weeks for your bank to refund your credit card or for a refund check to arrive. Thank you for your patience as we process returns as quickly and safely as possible. Please contact email@example.com for all return questions.
Follow these three steps to submit your return:
Visit our New Return Portal
To make shipping a return even easier, we have launched a New Return Portal that allows you to submit your return request. After we review your request and have authorization from the return warehouse, you will receive a prepaid return shipping label via email.
Please note: Oversized items (such as coolers, skis, furniture, large stoves and tents, etc) will be charged an oversized item return fee. Please don’t hesitate to ask firstname.lastname@example.org if you have any questions about typical return shipping for an oversized item you may order.
Pack your return
Pack your item(s) securely and include the original product packaging and tags.
Prepare & ship your package
Tape your package securely and affix your return shipping label to the outside. (Hint: If you cover or remove all existing shipping labels, you can usually reuse the bag or box your order came in.) Drop off your package at a carrier location near you. We’ll email you once we’ve issued a store credit or a refund – typically within 10 business days after we receive your package. It may take up to 3 additional weeks for your bank to refund your credit card. PLEASE NOTE: PREPAID LABELS EXPIRE 15 DAYS FROM DATE WE SEND THEM TO YOU.
- If we have questions about your return, we will contact you by phone or email.
- Returned merchandise that does not meet the conditions of the Gear.com Return Policy will be declined and a refund will not be issued.
- All returns will be charged a $8.95 restocking fee. Excluding returns for exchange or store credit.
- All sales are final on gift cards, lift tickets, and passes, as noted at time of purchase.
- If you prefer to work directly with a carrier to ship your return, please reach out to email@example.com to request an RMA and return shipping address.
Mail-in return exceptions
Some items cannot be returned via our return portal, including the following:
- Hazardous materials
- Food items
- Oversize items
- Some Corporate & Group Sales items
Mail-in return exceptions may apply to coolers, tents, kayaks, surfboards, SUP boards, cargo boxes, car racks, indoor cycles, power stations and more.
Store credits issued for returned products will expire one year from the date of issuance.
All other store credits expire 90 days from issuance, including credits issued by our Customer Success team or as part of a promotion.
Manufacturing Defect/Warranty Claims
If you experience a manufacturing defect, or it's outside of the Gear.com 30 day return window, please contact the manufacturer directly. Gear.com does not provide any direct warranty services, though your purchase may be covered by a brand or manufacturer warranty. If a warranty claim requires a Proof of Purchase from Gear.com, please contact firstname.lastname@example.org and we'll be happy to email a copy if needed.