Donnelly

The BOS is named after the airport code for Boston, the original hotbed of North American 'cross and home to some of the nastiest courses Even more aggressive than the PDX, it has buttressed side knobs for outstanding traction in super muddy corners and off-camber sections and a center tread that's all bite Tractor style tread for the harshest mud

Tight tread block pattern and aggressive shoulder lugs Soft rubber compound for extra grip and shock absorption Integrated puncture protection belt under the tread Tubeless-ready design mounts easily to most tubeless ready rims Tubeless casing is reinforced for wear, features an Aramid bead Can be used tubeless or with a tube

Tight tread block pattern and aggressive shoulder lugs Soft rubber compound for extra grip and shock absorption Integrated puncture protection belt under the tread Tubeless-ready design mounts easily to most tubeless ready rims Tubeless casing is reinforced for wear, features an Aramid bead Can be used tubeless or with a tube

Tight tread block pattern and aggressive shoulder lugs Soft rubber compound for extra grip and shock absorption Integrated puncture protection belt under the tread Tubeless-ready design mounts easily to most tubeless ready rims Tubeless casing is reinforced for wear, features an Aramid bead Can be used tubeless or with a tube

Tight tread block pattern and aggressive shoulder lugs Soft rubber compound for extra grip and shock absorption Integrated puncture protection belt under the tread Tubeless-ready design mounts easily to most tubeless ready rims Tubeless casing is reinforced for wear, features an Aramid bead Can be used tubeless or with a tube

Tight tread block pattern and aggressive shoulder lugs Soft rubber compound for extra grip and shock absorption Integrated puncture protection belt under the tread Tubeless-ready design mounts easily to most tubeless ready rims Tubeless casing is reinforced for wear, features an Aramid bead Can be used tubeless or with a tube