Aprilia Tuono 660 2021 vs. KTM 790 Duke 2020

The Aprilia Tuono 660 2021 and the KTM 790 Duke 2020 are both naked bikes with similar engine configurations and power outputs. The Tuono 660 has a 659cc inline twin-cylinder engine that produces 95 horsepower, while the 790 Duke has a slightly larger 799cc inline twin-cylinder engine that produces 105 horsepower. Both bikes feature liquid cooling and fuel injection systems.

In terms of suspension, both bikes have a telescopic fork at the front and a monoshock at the rear. The Tuono 660 uses a Kayaba front suspension and offers adjustable preload and rebound damping on the rear suspension. On the other hand, the 790 Duke uses a WP front suspension and only offers adjustable preload on the rear suspension.

Both bikes have aluminum frames, but the Tuono 660 has a motor as a load-bearing component, while the 790 Duke has a tubular frame made of chromium-molybdenum. The braking systems on both bikes consist of dual discs at the front with four-piston calipers and radial technology.

Aprilia Tuono 660 2021

In terms of advanced rider assistance systems, both bikes offer ABS, riding modes, and traction control. However, the Tuono 660 also includes additional features such as launch control, quick shift, and anti-wheelie control. It should be noted that some of these features may come at an additional cost.

In terms of dimensions, both bikes have the same front and rear tire widths of 120mm and 180mm respectively, with 17-inch wheels. The Tuono 660 has a shorter wheelbase of 1370mm compared to the 790 Duke's 1475mm. The seat height of the Tuono 660 is slightly lower at 820mm compared to the 790 Duke's 825mm. Both bikes have a dry weight of 169kg and similar fuel tank capacities, with the Tuono 660 having a 15-liter tank and the 790 Duke having a 14-liter tank.

In terms of equipment, the Tuono 660 features LED headlights, while the 790 Duke comes with an adjustable windscreen.

KTM 790 Duke 2020

In terms of strengths, the Tuono 660 is praised for its user-friendly and sonorous engine, attractive appearance, sporty performance, good ergonomics, decent brakes, extensive electronics (although some may come at an additional cost), and stable and precise chassis. On the other hand, the 790 Duke is praised for its high-revving twin-cylinder engine, quick-shifting gearbox, excellent chassis setup, playful handling, high-quality electronic package, TFT screen, and good price-to-performance ratio.

In terms of weaknesses, the Tuono 660 is criticized for its price-to-performance ratio and the additional cost of the IMU package. The 790 Duke's only weakness mentioned is the lack of adjustable preload on the front suspension.

Overall, both the Aprilia Tuono 660 2021 and the KTM 790 Duke 2020 are impressive naked bikes with their own strengths and weaknesses. The choice between the two would depend on the rider's preferences and priorities.