THE 1390 HAS RECEIVED THE LEAST AMOUNT OF UPDATES BUT THE CHANGES ARE SIGNIFICANT
The Super Duke R is the big daddy of the Duke crew, all 1350cc of it. Born as a hypernaked rather than a converted superbike, it is as intimidating as they come, made for the racetrack but allowed on the road. The 1390 has received the least amount of the updates thrown around the Duke garage. But the changes are significant. The official number is 60 percent new parts. The frame and swingarm are unchanged with the bulk of the changes made to the engine, electronics, bodywork and suspension.
Its heart and soul is the updated LC8 V-twin. The goal was to increase power without weight to reach a 1:1 power-to-weight ratio while not losing the Super Duke’s character. Throw in Euro5+ requirements and this became a serious mission.
First the bore was increased
