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For the most ambitious adventures

The X’Plor MSO is an adventure tire designed for the most ambitious adventures. The combination of smooth-rolling center knobs and aggressive shoulder lugs provide great traction and durability for gravel roads, trails, urban assault and even pavement.

The MSO tire is named for the airport code of Missoula, Montana, home of the Adventure Cycling Association. Donnelly’s X’Plor adventure tire series is designed to bridge the gap between pavement and blazing your own trail.

Product details

  1. Smooth-rolling center knobs
  2. Aggressive shoulder lugs provide great traction and durability
  3. For gravel roads, trails, cyclocross, urban assault and even pavement
  4. Soft rubber compound for extra grip and shock absorption

More options


Size 700C x 40mm
Diameter 700C
Width 40mm
Compound 70a
Bead Folding
Type Clincher
Minimum pressure 35psi
Max pressure 55psi
ETRTO 40-622
Puncture protection Tread Belt
Studdable No
Weight 384g
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Weights are based off Trek pre-production products at time of publication. Weights may vary in final production.

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