Yamaha YZF-R6 2019 vs. Aprilia RS 660 2021

The Yamaha YZF-R6 2019 and the Aprilia RS 660 2021 are both supersport motorcycles that offer impressive performance and advanced features.

In terms of engine specifications, the Yamaha YZF-R6 2019 is equipped with an in-line, 4-cylinder engine with a displacement of 599cc. It produces a power output of 118 HP and a torque of 65.7 Nm. On the other hand, the Aprilia RS 660 2021 features a 2-cylinder in-line crankpin offset engine with a displacement of 659cc. It delivers a slightly lower power output of 100 HP but a higher torque of 67 Nm. Both bikes have a high compression ratio, with the Yamaha at 13.1 and the Aprilia at 13.5.

In terms of suspension, both motorcycles feature upside-down telescopic forks at the front and swing arm suspension with a monoshock at the rear. The Yamaha YZF-R6 2019 has a front fork diameter of 43mm, while the Aprilia RS 660 2021 has a slightly smaller diameter of 41mm. Both bikes offer adjustable compression, preload, and rebound settings for the suspension.

Yamaha YZF-R6 2019

In terms of chassis, both motorcycles feature aluminum frames. The Yamaha YZF-R6 2019 has a Deltabox frame, while the Aprilia RS 660 2021 has a load-bearing engine frame. The Yamaha has a rake of 66 degrees and a trail of 97mm, while the Aprilia has a slightly steeper rake of 65.9 degrees and a longer trail of 104.6mm.

Both motorcycles are equipped with double disc brakes at the front with a diameter of 320mm. They also feature radial brake technology, which provides enhanced braking performance.

In terms of advanced rider assistance systems, both motorcycles offer ABS, riding modes, and traction control. The Aprilia RS 660 2021 goes a step further and includes additional features such as launch control, ride by wire, quickshifter, and anti-wheelie control.

In terms of dimensions and weights, both motorcycles have a front tire width of 120mm and a rear tire width of 180mm. They both have a wheelbase of around 1370-1375mm. The Yamaha YZF-R6 2019 has a seat height of 850mm, while the Aprilia RS 660 2021 has a slightly lower seat height of 820mm. The Yamaha weighs 190kg (with ABS), while the Aprilia is lighter at 183kg (with ABS). Both motorcycles have fuel tank capacities of 15-17 liters.

Aprilia RS 660 2021

In terms of strengths, the Yamaha YZF-R6 2019 is praised for its top chassis, powerful brakes borrowed from the YZF-R1, sharp design, modern lighting system, mature electronics package, easy-to-read display interface, and a rev-happy engine. On the other hand, the Aprilia RS 660 2021 is commended for its powerful engine, extensive electronics package, sporty chassis, nice sound, low weight, and sporty look.

In terms of weaknesses, the Yamaha YZF-R6 2019 is criticized for its engine lacking punch in the middle rev range and its higher price compared to competitors. The Aprilia RS 660 2021 has a weakness in its poorly readable rev counter.

Overall, both the Yamaha YZF-R6 2019 and the Aprilia RS 660 2021 offer impressive performance and advanced features. The choice between the two would depend on individual preferences and priorities, such as power output, electronics package, chassis design, and price.