Key performance

109 ch
Power
🔧
821 cc
Displacement
⚖️
205 kg
Weight
🏎️
220 km/h
Top speed
💺
785 mm
Seat height
16.5 L
Fuel capacity
💰
12 250 €
New price
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Technical specifications

Engine

Displacement
821 cc
Power
109.0 ch @ 9250 tr/min (79.6 kW)
Torque
86.0 Nm @ 7750 tr/min
Engine type
V2, four-stroke
Cooling
Air
Compression ratio
12.8:1
Bore × stroke
88.0 x 67.5 mm (3.5 x 2.7 inches)
Valves/cylinder
4
Camshafts
2 ACT
Fuel system
Injection. 53mm throttle bodies with full Ride by Wire
Valve timing
Desmodromic valve control
Starter
Electric

Chassis

Frame
Tubular steel Trellis frame attached to the cylinders head
Gearbox
6-speed
Final drive
Chain   (final drive)
Clutch
APTC slipper and self-servo wet multiplate clutch with control cable
Front suspension
43mm upside-down forks
Rear suspension
Progressive linkage with adjustable monoshock. Aluminium double-sided swingarm
Front wheel travel
130 mm (5.1 inches)
Rear wheel travel
140 mm (5.5 inches)

Brakes

Front brakes
Double disc. Semi-floating discs, radially mounted Monobloc Brembo M4-32 callipers, 4-pistons, axiial pump with ABS as standard
Rear brakes
Single disc. 2-piston floating calliper with ABS as standard equipment
Front tyre
120/70-ZR17
Front tyre pressure
2.30 bar
Rear tyre
180/55-ZR17
Rear tyre pressure
2.50 bar

Dimensions

Seat height
785.00 mm
Wheelbase
1480.00 mm
Length
2170.00 mm
Width
800.00 mm
Height
1055.00 mm
Fuel capacity
16.50 L
Weight
205.00 kg
Dry weight
180.50 kg
New price
12 250 €

Overview

Ducati has always known how to sell dreams on credit. With the Monster 821 Stealth, the Bolognese brand takes an additional step in the art of making people desire what they don't necessarily need: a version with adjustable suspension of a naked bike that is already convincing. The result? A motorcycle that is less restrained and decidedly more tactical.

Ducati Monster 821 Stealth

The 821 cc L-twin cylinder engine develops 109 horsepower at 9,250 rpm for a torque of 86 Nm available at 7,750 rpm. This engine cannot be summarized by its figures. It has a temperament: grumpy at low speeds, sharp at high speeds, it demands to be worked to deliver the best of itself. This is the charm of Ducati mechanics, and it is precisely what distinguishes the Stealth from a Yamaha MT-09 SP or a Kawasaki Z 900 RS, whose engines are more docile but less characterful. The Ducati Monster 821 Stealth technical specifications state 205 kg fully fueled, which places it in the middle of the segment, with a low seat at 785 mm that reassures riders of intermediate build.

What justifies the nickname "Stealth" is the technical equipment added compared to the standard version. The 43 mm fully adjustable inverted fork replaces the original fixed unit, and the rear monoshock also accepts adjustments. For those who pushed the Monster 821 to its limits and encountered the limits of a fixed suspension, this is a real answer. It is now possible to adapt the damping to your riding style rather than adapting your style to the motorcycle. The small windscreen, the bidirectional shifter, and the dark finish complete the picture of a motorcycle that takes itself seriously without becoming ostentatious.

Electronics are well present, with three riding modes, a three-level ABS, an eight-level traction control, and a color TFT screen. The front Brembo M4-32 radial four-piston calipers do the job with the precision expected from this house. On this point, neither the Suzuki GSX-S 750 nor the Z 900 offer such a level of braking from the factory. This is a solid argument, and it compensates for part of the bill.

Because the Ducati Monster 821 Stealth price, displayed at 12,250 euros, is the real subject of debate. The increase compared to the 821 standard approaches 7%, which places the Stealth in a tense price range, close to more powerful and more versatile motorcycles. The Ducati Monster 821 Stealth 2019 test reveals a consistent and well-built machine, tailored for a demanding rider who wants character without sacrificing the ability to adjust his motorcycle. This is not a beginner's machine; the engine's temperament and the chassis's liveliness assume a certain level of experience. It is a naked for those who have already tamed the category and now want to refine it. Those considering a used Ducati Monster 821 Stealth will likely find the right compromise between price and pleasure, especially if the desire to customize the Ducati Monster 821 Stealth with a Termignoni kit comes to be grafted onto the project. The sound changes everything, and the character of the V-twin is expressed even better freed from its homologation constraints.

Standard equipment

  • Assistance au freinage : ABS de série

Practical info

  • Véhicule accessible au permis A2 ou bridable à 47.5ch / 35 Kw
  • La moto est accessible aux permis : A, A2

Indicators & positioning

Weight-to-power ratio
0.53 ch/kg
🔄
Torque / weight
0.42 Nm/kg
🔧
Volumetric power
132.8 ch/L
In category Naked bike · 411-1642cc displacement (3771 motorcycles compared)
Power 109 ch Top 38%
47 ch median 98 ch 173 ch
Weight 205 kg Lighter than 64%
182 kg median 211 kg 255 kg
P/W ratio 0.53 ch/kg Top 34%
0.23 median 0.44 0.82 ch/kg

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