Ducati Monster 2021 vs. Ducati Monster 821 2017

In terms of engine and drive train, both the Ducati Monster 2021 and the Ducati Monster 821 2017 have V2 engines with similar fuel systems and cooling mechanisms. However, the Monster 2021 has a slightly higher engine power of 111 HP compared to the Monster 821's 109 HP. The Monster 2021 also has a higher torque of 93 Nm compared to the Monster 821's 87 Nm. Additionally, the Monster 2021 has a larger displacement of 937 ccm compared to the Monster 821's 821 ccm.

Both bikes have upside-down telescopic forks for their front suspension, but they differ in the brand. The Monster 2021 uses Marzocchi forks, while the Monster 821 uses Sachs forks. Both bikes have monoshock rear suspension.

In terms of chassis, the Monster 2021 has an aluminum frame, while the Monster 821 has a steel frame. The Monster 2021's frame is load-bearing, meaning it supports the engine, while the Monster 821 has a tubular frame.

Ducati Monster 2021

Both bikes have double disk front brakes with four pistons and radial monoblock technology from Brembo. However, the Monster 2021's front brakes have a slight advantage with the use of Brembo's brand.

In terms of dimensions and weights, both bikes have the same front and rear tire widths and diameters. The Monster 2021 has a slightly shorter wheelbase of 1474 mm compared to the Monster 821's 1480 mm. The Monster 2021 also has a higher seat height of 820 mm compared to the Monster 821's 785 mm. The Monster 2021 is lighter in both dry weight (166 kg) and kerb weight (188 kg) compared to the Monster 821's dry weight (179.5 kg) and kerb weight (205.5 kg). However, the Monster 821 has a larger fuel tank capacity of 17.5 l compared to the Monster 2021's 14 l.

In terms of strengths, the Monster 2021 boasts a powerful V2 engine with lots of power from low revs. It also has a comprehensive electronics package and comes with a quickshifter as standard. The Monster 2021 offers a neutral handling and a great combination of riding fun and practicality.

Ducati Monster 821 2017

On the other hand, the Monster 821 has the advantage of 25 years of superb looks. It also has a powerful and harmonious engine, a comfortable seating position, and an adjustable seat height. The Monster 821 is known for its good workmanship and offers a full range of electronics.

In terms of weaknesses, the Monster 2021's chassis could benefit from a little more finesse considering its price range. The Monster 821, on the other hand, has a non-adjustable suspension fork and its brakes are considered a little too toxic.

Overall, both the Ducati Monster 2021 and the Ducati Monster 821 2017 offer their own unique strengths and weaknesses. It ultimately depends on the rider's preferences and priorities in terms of performance, design, and features.