Donnelly BOS Tire 700x33C Folding Tubular Black MFPN=010-02534-60 Must be used with a

Must be used with a Campagnolo Pro-Tech bottom bracket

Heat treated hardware

Adjustable air sprung pneumatic cartridge

5" (38mm) Individual or Pair

Lyrik Ultimate packs an orchestra of industry-leading tech like the ButterCups technology and a DebonAir+ air spring in a stout 35mm chassis

Donnelly BOS Tire 700x33C Folding Tubular Black MFPN=010-02534-60 Must be used with aThe 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 thats all bite Tractor style tread for the harshest mud TECH SPECS Primary Color Black Bead Folding Tire Type Tubular Tire Width 33C Tire Width Range 30 38 Labeled