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Although there are wheels included with the GRX family, Mueller ran Shimano's RS770 carbon tubeless clinchers. Erica Mueller's Orbea Terra with Shimano GRX. © Z. Schuster / Cyclocross Magazine

Although there are wheels included with the GRX family, Mueller ran Shimano’s RS770 carbon tubeless clinchers. Erica Mueller’s Orbea Terra with Shimano GRX. © Z. Schuster / Cyclocross Magazine