2017 KTM 390 Duke Review

A radially mounted four-piston caliper on a 300mm rotor on the original 390 appeared to be class-leading but in actual testing wasn’t, so the Brembo-designed ByBre caliper now bites on a 320mm disc and addresses a weakness in the previous edition by providing excellent stopping power. The ABS can be switched to a Supermoto setting that disables rear antilocking for hooligan skidding activity, which, by the way, is frowned on when painting black lines on the rooftop of a century-old building.