Built to go beyond pure speed! From backcountry singletrack to the World Cup start line, the Aspen AT delivers the confidence to push further and faster across a wider range of terrain. For nearly three decades, the Aspen has been a staple of XC race tires. Developed with input from Nino Schurter and the Scott SRAM MTB Racing Team, it was reworked to meet the demands of modern World Cup XCO. That single race tire has since grown into a full family. From the short-track-focused Aspen ST, and now the Aspen AT, built to go fast across a broader range of terrain. Details Category: XC, Downcountry Recommended use: XC, roots, loose-over-hard, and technical downcountry sections Recommended Installation: Front or Rear Model Highlights: 3C MaxxSpeed 120 TPI casing EXO puncture protection E-Bike E50 Rated Tubeless Ready Tire Tech 3C MAXXSpeed: The new MAXXSpeed is a top-shelf rubber compound for XC racing. It’s a high-silica content compound that reduces rolling resistance while also enhancing wet traction. Compared to the previous 3C MaxxSpeed, the new compound has approximately 25% less rolling resistance in a lab setting (using the same tread pattern, construction, and tire pressure). In a real-world setting, our testing shows the new compound can save up to a minute over the course of a 90-minute race. EXO: EXO is a cut- and abrasion-resistant material added to the sidewalls of many Maxxis mountain bike and gravel tires. This densely woven fabric is lightweight and highly flexible, ensuring that the tire's performance remains unaffected. Choose EXO Protection for enhanced durability for gravel, XC, and light-duty trail riding. Tubeless Ready: Tubeless-ready tires provide the rider with many benefits: the ability to run lower air pressures, which improves traction; lower rolling resistance when compared to a tube-type tire; and less chance of flatting because there is no tube. Tubeless-ready tires are denoted by the letters “TR” on the sidewall. Tubeless-ready tires must be mounted to tubeless compatible rims and require the use of a liquid sealant to maintain pressure. Liquid sealants have the added benefit of sealing small punctures. Be sure to check your sealant regularly and refresh as needed, as it will dry out over time. Pick up an extra bottle of sealant here . Liquid sealants should only be used in the following types of tires: tubeless road, tubular, and tubeless-ready. Using liquid sealants in any other Maxxis tire will void the warranty.