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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 650C x 50mm 700C x 40mm
Diameter 650C 700C
Width 50mm 40mm
Compound 70a 70a
Bead Folding Folding
Type Clincher Clincher
Minimum pressure 35psi 35psi
Max pressure 55psi 55psi
ETRTO 50/61-584 40-622
Puncture protection Tread Belt Tread Belt
Studdable No No
Weight 598g 496g
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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