Advertisement

Mueller ran the new GRX GX817 Di2 rear derailleur at the DK200. Erica Mueller's Orbea Terra with Shimano GRX. © Z. Schuster / Cyclocross Magazine

Mueller ran the new GRX GX817 Di2 rear derailleur at the DK200. Erica Mueller’s Orbea Terra with Shimano GRX. © Z. Schuster / Cyclocross Magazine