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Ortenblad uses 140mm SRAM Centerline rotors front and rear. Tobin Ortenblad's Santa Cruz Stigmata cyclocross bike. © D. Perker / Cyclocross Magazine

Ortenblad uses 140mm SRAM Centerline rotors front and rear. Tobin Ortenblad’s Santa Cruz Stigmata cyclocross bike. © D. Perker / Cyclocross Magazineundefined