Maxxis Aspen ST 170TPI MaxxSpeed EXO TR Fold Tyre 29x2.25"

Riders have asked, pleaded, and maybe even begged, and Maxxis has finally answered. Starting in time for the 2024 race season, Maxxis will offer a limited production run of the Aspen ST along with a 170 TPI casing version of the venerable Aspen. Until now, these tires were reserved only for our top race teams.

The Aspen ST is an ultra-low-profile race tire designed primarily for short track XC use, although we have seen some of our athletes use the narrower 29x2.25 size on their gravel bikes as well. Sometimes referred to as the "Fastpen," this tire is sure to give any racer an edge in dry, grassy conditions. It is not recommended for more technical tracks or mixed weather conditions due to the limited tread profile.

The team-spec Aspens use the same tread pattern as the current production version, but with a lighter, faster and more supple 170 TPI casing. Two sizes will be offered: a 29x2.25 and 29x2.40 so riders can opt for the lowest weight possible or higher volume depending on the race conditions.

All team-spec tires feature our EXO sidewall protection and tubeless ready-casings. However, it is important to note that these tires are intended first and foremost for racing in suitable conditions. The tradeoff for the weight savings and low rolling resistance of the 170 TPI casing is lower durability relative to our standard 120 TPI casing. Please keep this in mind when advising riders which product best fits their needs.

These Aspen and Aspen ST specs will carry a special "Team Spec" hot patch on the sidewall to differentiate them from the standard versions available on the market today.

Fitment check
Please note that the 2.40" widths of the Aspen and Aspen ST are designed to measure true to width at 25 PSI. Some older XC frames and forks may not have proper clearance for the wider specs. Maxxis recommends a minimum of 6mm of clearance between the tire and all parts of the bicycle frame and fork.