| Availability: | In stock (6) |
In that weirdo 650b size everybody loves lately! Surly’s Knard tread is made up of low, closely spaced knobs, an effective pattern for going fast over varied terrain. The 41mm width conforms to the ground surface, absorbs irregularities and provides a decent sized contact patch. 23–30mm recommended rim size. 60 TPI casing with Kevlar bead (431g).