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Acker went aero with Zipp Vuka clamps and Vuka Evo 70 carbon extensions. Matt Acker's Salsa Warbeard. 2018 Gravel Worlds. © Z. Schuster / Cyclocross Magazine

Acker went aero with Zipp Vuka clamps and Vuka Evo 70 carbon extensions. Matt Acker’s Salsa Warbeard. 2018 Gravel Worlds. © Z. Schuster / Cyclocross Magazine