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Mueller ran the Di2 version of the new GX800 series of components, which included the GX815 front derailleur. Erica Mueller's Orbea Terra with Shimano GRX. © Z. Schuster / Cyclocross Magazine

Mueller ran the Di2 version of the new GX800 series of components, which included the GX815 front derailleur. Erica Mueller’s Orbea Terra with Shimano GRX. © Z. Schuster / Cyclocross Magazine