VITAL SPECS of KTM’s 1390 Super Duke GT have emerged in Swiss type-approval documents. Unsurprisingly, the Super Duke engine is carried directly across to the sports-touring model, which was spied on test earlier this year. The documents confirm that it has the same capacity, which is really 1350cc despite the name, meaning it’s only 43cc larger than the old 1303cc ‘1290’ V-twin.
Like the Super Duke, the GT gets variable-valve timing and lift, resulting in identical power of 140kW at 10,000rpm, and torque of 145Nm at 8000rpm. The earlier spy photos appeared to confirm the bike also receives the latest Super Duke chassis, but the approval documents show there are noticeable changes in some key dimensions – not least the wheelbase and overall length.
The GT model is 19mm longer…