The engine in the KTM 990 Super Duke is a DOHC 999.8cc 75° V-twin with four valves per cylinder.

The liquid cooled engine has an 11.5:1 compression ratio and uses dry sump lubrication with two rotor pumps.

In 1995, KTM Motorradholding GmbH acquired Swedish motorcycle maker Husaberg AB and took control of the Dutch company White Power Suspension).

The new model received a slight reduction of the steering head angle to 66.1° (previously 66.5°).

Changes to the electronic fuel injection system were made to improve throttle response, smooth out the power delivery, and meet emissions standards.