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Tobin Ortenblad' used a Quarq power meter and a massive 46t X-Sync wide-narrow chainring on his Santa Cruz Stigmata cyclocross bike. © Cyclocross Magazine

Tobin Ortenblad’ used a Quarq power meter and a massive 46t X-Sync wide-narrow chainring on his Santa Cruz Stigmata cyclocross bike. © Cyclocross Magazine