Aspen ST
Aspen ST
Aspen ST

Aspen ST

$101.00

$80.00
( / )

Ready to ship

The Aspen ST is an ultra-low-profile race tire designed primarily for short track XC use. Sometimes referred to as the “Fastpen,” this tire is sure to give any racer an edge in dry conditions.

Rubber:

  • MaxxSpeed

Casing:

  • 120 TPI + EXO (XC Race)
  • 170 TPI + EXO Team Spec (Ultra Lightweight XC)

Sizes:

  • 29x2.40 (Designed around modern 30mm XC Rims)
  • 29x2.25 (Narrower rims)

Tubeless Ready (TR)

Category: XC Race

Recommended Uses: Dry XC Conditions

Recommendation Installation: Front or rear

Specs

Part #
Size
ETRTO
TPI
Bead
Weight (g)
Compound
Max PSI
Tech
Color
Application
29
29X2.25
TB00523300
29X2.25
57-622
120
FOLDABLE
670
MAXX SPEED
50
MaxxSpeed/EXO/TR
Black
MOUNTAIN
29X2.25
TB00523400
29X2.25
57-622
170
FOLDABLE
610
MAXX SPEED
50
MaxxSpeed/EXO/TR
Black
MOUNTAIN
29X2.40
TB00523500
29X2.40
61-622
120
FOLDABLE
750
MAXX SPEED
50
MaxxSpeed/EXO/TR
Black
MOUNTAIN
29X2.40
TB00523700
29X2.40
61-622
170
FOLDABLE
685
MAXX SPEED
50
MaxxSpeed/EXO/TR
Black
MOUNTAIN
Available Technologies

Available Technologies

MaxxSpeed
EXO
Tubeless Ready
Wide Trail XC (WT XC)

MaxxSpeed

The new MaxxSpeed (2023) is our top-shelf rubber compound for XC racing. It’s a high-silica content compound which 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.

Cutaway section of bike tire. Maxxspeed.

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 performance of the tire remains unaffected. Choose EXO Protection for enhanced durability for gravel, XC, and light-duty trail riding.

EXO Cutaway for web

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.
Liquid sealants should only be used in the following types of tires: tubeless road, tubular, and tubeless ready. The use of liquid sealants in any other Maxxis tire will void the warranty.
Tubeless Ready Maxxis Shorty bicycle tire.

Wide Trail XC (WT XC)

Maxxis recommends using 2.40″ Wide Trail XC tires on 30mm internal rims. The tires are compatible with rims as narrow as 25mm, but we do not recommend exceeding 30mm wide.

Diagram of recommended 6 millimeter clearance for seat stay, fork, seat tube, bottom bracket, and chain stay.

Performance Ratings

Rolling Speed

Cornering Control

Braking Traction

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