IRC was also showing a 650b prototype that will have a different tread than the 700c version. IRC Boken Gravel Tire. 2018 Sea Otter Classic. © Cyclocross Magazine
IRC was also showing a 650b prototype that will have a different tread than the 700c version. IRC Boken Gravel Tire. 2018 Sea Otter Classic. © Cyclocross Magazine
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