BSD ALEX D Donnastreet Tyre Black 20 X 2.3 jerseys new Fat Bikes: If your fat specialized new Fat Bikes: If your fat bike has a 170 177 rear hub spacing KICKR AXIS The folding Donnastreet tire features the same all over smoother tread for more grip and sidewalls which sit further round the side of the tire wall for better grind performance with the added benefits of the Kevlar bead making it lighter weight and foldable… – Foldable kevlar bead– Lighter weight than regular Donnastreet tire– Smooth centre for low rolling resistance– Extra grippy & super squeaky compound– Tear resistant silkworm casing– Rated up to 110 psi – Weights 638g based on the same proven rubber and tread design as the original