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BOS 700 x 33 - Tubeless Ready Clincher

Size Chart

BOS is the airport code for Boston, Massachusetts, a hotbed of North American cyclocross and home to some of the harshest weather and the toughest race courses. If you’re pinning on a number in New England you better be ready for rain, roots, ruts and mud. And, you better have a set of Donnelly BOS tires in your quiver.

This mud slinger is even more aggressive than our race-proven PDX cyclocross tire. It features stiff, buttressed side-knobs for outstanding traction in super muddy corners and slick off-cambers. The unique center tread pattern is all bite when it comes down to a long muddy tractor pull.

700 x 33mm

456 grams

Tubeless Ready

Part #:

Product Features:

  • Buttressed side-knobs for superior cornering traction.
  • Unique center knob pattern designed for maximum traction when you need it most.
  • Soft rubber compound provides extra grip and shock absorption.
  • Tubeless-ready design mounts easily to most tubeless ready rims.
  • Tubeless casing is reinforced for wear, features an Aramid bead.
  • Precision design creates a straight tire with no variances in size or alignment.
  • Can be used tubeless or with a tube.