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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
Shimano GRX FC RX820 1x Chainset Rear Derailleurs Brake reach: 39 49mm Select:420mm Brake reach: 39 49mm MatchMaker™ compatible brake set provides all the power of its siblings Whether navigating challenging gravel trails or cruising on varied terrains Advanced Technology: HollowTech II 12 speed setup offers superior efficiency and compatibility with Hyperglide+ chains
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