Shimano Ultegra
Shimano Ultegra R8100 12-speed Di2: shift levers, derailleurs, cranksets and power meters, cassettes and chains.
Gravel racing does not happen on one surface, so we did not build one tire. The Protocol lineup offers directional tread architecture, each tuned for different conditions. Same casing, same compound. The difference is what happens where the rubber meets the ground.
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