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Ducati Monster 821 2019 - 2020  FACTORY SPECIFICATIONS

Ducati Monster 821  2019 - 2020 Stealth

Ducati Monster 821  Stealth FACTORY SPECIFICATIONS

MODELDucati Monster 821 Stealth
ENGINE TYPEFour stroke, Testastretta 11° L-Twin, 4 Desmodromically actuated valves per cylinder
Year2019 - 2020
Displacement / Capacity 821 cc / 50.1 cu-in
Bore X Stroke88 x 67.5 mm
Compression Ratio12.8:1
Cooling System
Max Power80 kW / 109 hp @ 9250 rpm
Max Torque86 Nm / 9.1 kgf-m / 63 lb-ft @ 7750 rpm
IgnitionMarelli Electronic
InductionElectronic fuel injection system, 53mm throttle bodies with full Ride by Wire
Start SystemElectric
TRANSMISSION SPECS
Lubrication
Gear Box6 Speed
ClutchSlipper and self-servo wet multiplate clutch with mechanical control
Primary / Final DriveFinal Drive :          Chain, Front sprocket 15, Rear sprocket 46
Primary Drive :   Straight cut gears, ratio 1.85:1
Secondary drive
Gear Ratio1st 37/15      2nd  30/17      3rd 28/20      4th 26/22      5th 24/23      6th  23/24
CHASSIS SPECS
FrameTubular steel Trellis frame attached to the cylinders head
Front SuspensionKayaba 43mm upside-down fork
Rear SuspensionProgressive linkage with adjustable monoshock. Aluminum double-sided swingarm
BrakesFront Brakes:     2 x 320 mm semi-floating discs,  radially mounted Monobloc Brembo M4-32 callipers, 4-pistons, axial pump .

Rear Brakes :     Ø 245 mm disc, 2-piston caliper  .

ABS:                     Standard
Traction Management
Exhaust SystemStainless steel muffler and aluminium and cap.  lightweight 2-1 system with catalytic converter with 2 lambda probes
DIMENSION SPECS
Overall Length2169 mm / 85.4 in  
Seat HeightAdjustable 785 mm - 810 mm / 30.9 in - 31.9 in
Overall Height
Overall Width800 mm / 31.5 in  
Overall WeightDry Weight -    180.5 kg / 398 lbs
Wet Weight -   206 kg / 454 lbs
Wheelbase1480 mm / 58.3 in
Inner Leg Curve
WHEEL SPECS
Wheels / RimsFront Wheel :   10-spoke in light alloy, 3.50  x  17"
 Rear Wheel:     10-spoke in light alloy, 5.50 x 17"
Front Tyre120/70 ZR 17 Pirelli Diablo Rosso II
Rear Tyre180/55  ZR17 Pirelli Diablo Rosso II
Front Wheel Travel130 mm / 5.1 in
Rear Wheel Travel140 mm / 5.5 in
Rake:24.3°
Trail93.2mm / 3.7in
FUEL SYSTEMEFI
Fuel Capacity16.5 Litres  / 4.36 US gal 
Fuel Reserve
Fuel Consumption45 mpg / 19.1 km/l
ADDITIONAL
Top Speed140 mph / 225 kph
SAFETY EQUIPMENTDucati Safety Pack: Bosch ABS, Ducati Traction Control (DTC). Riding Modes, Power Modes
Standard Equipment Passenger seat cover (except Monster Dark) passenger grab handles. Compatible with anti-theft system and DDA
Colour1. Dust Grey and Black with Black frame and Black wheels

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Video Courtessy of Matty Motorcycle


Presented in 1992 at the Cologne fair, the Monster was an immediate hit, a machine that skilfully combined a few simple technical elements to create not just a bike but, first and foremost, a true design phenomenon.
Over the years the Monster has gone on to become a motorcycling icon and now, twenty years later, Ducati offers a full Monster ‘family’ that has something for every motorcyclist.

The Monster 821 Stealth’s most obvious distinguishing feature is the paint that gives this model its name, light gray and Ducati Red graphics over matte black with an “821” model designator painted on a color-matched section the upper rail of the frame that visually ties the bike together quite nicely.

Most everything else comes with the blackout treatment.


The Stealth starts out with a pared-down front fender that doubles as a guard for the swept area of the inverted stems. It rocks the same round cyclops halogen headlight as ever with horseshoe shaped, LED parking lights for ample two-way visibility up front. The diode emitters continue into the rearward lights.


Testastretta 11°
The second generation 821cc Testastretta 11° engine, now becomes a fully-stressed chassis member with Panigale-style attachment points for the Trellis frame.

The Desmodromic motor uses a number of important and highly effective features to deliver an impressive 112 hp @ 9,250rpm and a ride-enhancing torque of 65.9lb-ft (9.1kgm) @ 7,750rpm.




In addition to the crankshaft now rotating on shell main bearings lubricated with a new-style oil pump, a number of well-proven technical advancements in Ducati’s twin-cylinder technology have also been combined to create an exciting, customisable and user-friendly character for the new generation mid-range Monster.




Breathing through circular Ride-by-Wire throttle bodies, the 821 Testastretta 11° uses the latest fuel injector positioning to target spray directly onto the rear of the hot intake valve instead of the relatively cold surface of the intake port wall.

The enhanced vaporisation achieved as the fuel hits the valve, fully atomises the incoming charge, eliminating the chance of compromised combustion efficiency experienced if droplets of fuel enter in liquid form.

The engine, which is cooled with a stylishly curved radiator equipped with two high-efficiency electric fans, also uses Ducati’s secondary air system, maintaining performance-optimised fuel mapping for smoother cycle-to-cycle engine operation, without compromising emissions.




The Testastretta 11° engine concept effectively increased user-friendliness by reducing the amount of valve over-lap from around 41° – typical in performance engines that operate constantly at high RPM – to just 11°, which enhanced mid-range and overall smoothness.




The Monster 821 engine features an oil bath, cable-operated APTC clutch with ‘slipper’ function and super-light feel at the lever. Its design uses a progressive self-servo mechanism that presses the plates together when under drive from the engine, enabling the reduction of the clutch spring rates.

This results in a much lighter clutch lever at the handlebar, ideal in stop-start traffic or long journeys. When the drive force is reversed (over-run), the same mechanism reduces the pressure on the clutch plates, enabling them to provide a race-like ‘slipper’ action, which reduces the destabilizing effect of the rear-end under aggressive down-shifting and provides a much smoother feeling when closing the throttle or down-shifting under normal riding conditions.




The impressive 50-52mm (1.96-2.04in) section exhaust headers lead the 2-1-2 system through power-enhancing equal lengths that help enable the Monster’s efficient power delivery.

The engine management system dedicates a lambda probe to each header to provide precise fueling, while the stylish vertically-merged silencers carry the catalytic converter to provide Euro 3 conformity and electronically controlled mid-section valve to optimise exhaust pressures throughout the rev-range.

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