The Ducati Monster 821 is one of the most iconic motorcycle that can still be found on today’s roads. During its long history, the Monster has been constantly improved and today we are looking at the most refined version of this model.

Built with power, versatility and agility in mind, the Ducati Monster 821 is a potent motorcycle that is ready for anything you might want to throw at it.

Comfortable, fast and practical, the Monster 821 is powered by a state of the art Testastretta 11° L-twin, liquid cooled engine with 4 Desmodromically actuated valves per cylinder. Fire it up and it will crank out a maximum output of 82.4 KW (112 Hp) @ 9,250 Rpm with 89.4 Nm (65.8 Lb-Ft) of torque at 7,750 Rpm.

All this power is kept in check by a six speed transmission with APTC slipper and self-servo wet multiplate clutch with control cable.

Hit the jump for more information the Ducati Monster 821.

  • 2015 Ducati Monster 821
  • Year:
    2015
  • Make:
  • Engine:
    Testastretta 11° L-Twin, 4 Desmodromically actuated valves per cylinder, liquid cooled
  • Transmission:
    6-speed
  • Horsepower @ RPM:
    112
  • Torque @ RPM:
    65
  • Energy:
    Electronic Fuel Injection (EFI)
  • Displacement:
    821 cc
  • Top Speed:
    140 mph (Est.)

Overview

2015 Ducati Monster 821 Exterior
- image 566502

Essentially Monster

A bold and essential form shaped by a unique history, combined with the unmistakable Ducati roar released from the 112hp Testastretta 11° engine, are hallmarks of the Monster 821. Trellis frame, Riding Modes, and the Ducati Safety Pack are the elements that bring you unprecedented riding pleasure. Monster 821. Designed according to your desires, to be even more Monster

2015 Ducati Monster 821 Key Features:

2015 Ducati Monster 821 Exterior
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Concept:

Forms and functionalities.
The performance and fluidity of the new Testastretta 11°, the versatility of the three Riding Modes, the comfort of the adjustable seat and the passenger handles make the Monster 821 the ideal bike for every occasion. With Monster, the design is unmistakably that of an icon. The fun has no limits.

Design
It takes just a glance to see all of the elements that contribute to creating the legendary Monster: the muscular, sporty line, the rounded front headlight flanked by the forks, the high number plate, the compact yet imposing metal fuel tank. The unmistakable "minimalist" design that gives you the impression of being in front of an engine, a frame, a tank, a seat, and nothing more.

Despite its larger size, which offers unprecedented performance and versatility, the Monster’s proportions immediately reveal the heart of a sports bike. The mass is visually concentrated at the front and the engine area looks compact, even with the new water cooling system, into which the radiator and the water supply pipes have been cleverly incorporated. The engine is combined with an impressive side-mounted staggered exhaust system that leaves no room for doubt about the bike’s performance.
The new Monster 821 clearly spells sophistication, modernity and substance thanks to its avant-garde technology and top-quality materials. Ducati’s traditional trellis frame has evolved, using a typical sports bike solution, in which the engine is the supporting element. The imposing metal tank in pure "Monster style" helps to define a superior class of bike.

Engine:

2015 Ducati Monster 821 Exterior
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Testastretta 11°
The Monster 821 is powered by the Testastretta 11° 821 cc engine, with air injection system. A secondary air system similar to the one used on the 1199 Panigale has been introduced in order to optimise operation and reduce combustion cycle variability, without affecting emissions. A controlled flow of clean air is injected into the exhaust pipe, enabling total oxidation of the hot exhaust gases, efficiently cutting hydrocarbon and carbon monoxide levels.

The Testastretta 11° engine fitted to the Monster 821 is an exclusive feature of these bikes and its structure has been engineered to be an integral element of the frame. In addition, the air filter and exhaust system have been designed to provide improved torque at low-medium engine speeds.

The Testastretta 11° 821 cc engine generates power equal to 82.4 kW (112CV) @ 9,250 rpm and 89.4 Nm (9.1kgm) of torque at 7,750 rpm.

Exhaust system
The Testastretta 11° 821 engine is combined with a type 2-1-2 exhaust system, which leaves no room for doubt about the performance that the new Monster 821 is capable of unleashing.

The engine control unit has a lambda probe for each individual cylinder, guaranteeing delivery of the right amount of fuel, while the stylish vertically stacked cannon silencers are equipped with catalytic converters that ensure compliance with Euro 3 standards. An electronically controlled mid-section adjustment valve optimises exhaust pressure according to engine speed.

Slipper clutch
The transmission features an oil bath clutch with "slipper" function and a lever that is very light to the touch. It is equipped with a gradual self-servo system that compresses the discs when the engine speed is reduced, allowing the load on the pressure plate springs to be reduced. This reduces the stress on the clutch lever, ensuring optimum conditions in city traffic when frequent gear changes are required, or on long trips.

When the transmission force is reversed (overload), the same mechanism makes it possible to reduce the pressure on the clutch plates, enabling them to work in "slipper" mode, which reduces the destabilising effect on the rear end during aggressive downshifting and gives a feeling of greater fluidity when decelerating or downshifting in normal driving conditions.

Power and torque
Thanks to the specially designed air filter and exhaust system, the Testastretta 11° engine generates power comparable to that of a 3/4 cylinder engine. Even the most demanding "Monsteristi" and sports riders will be able to appreciate the punchy torque that is readily available at a wide range of speeds, already reaching more than 85% of its maximum torque at 5500 rpm. The Testastretta 11°’s character is enhanced by the choice of the final ratio set to develop maximum acceleration in each gear and maximum engine response with each turn of the throttle.

Chassis:

2015 Ducati Monster 821 Exterior
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Unmistakable Fuel Tank
The Monster’s 17.5 L fuel tank is an integral part of the bike’s overall design.
The distinctive fuel tank, pure "Monster" in style, completes the Monster’s strong, unmistakable silhouette, while its metal structure and sculpted knee panels give the bike a feeling of solidity.

Brembo braking system
The front brakes of the Monster 821 have high-performance, pump-activated Brembo monobloc M4-32 radial callipers, equipped with high-calibration multiple 9MP ABS as standard. The four-piston front callipers, fitted radially, act on 320 mm discs, while the Brembo two-piston rear calliper is fitted on a 240 mm disc.

Frame inspired by racing bikes
The new Monster has a frame structure that’s inspired by the racing models, with the engine as the star. The structure is comprised of a compact Ducati trellis frame, mounted directly onto the cylinder heads and the engine itself. Even the shock and the rear sub-frame are connected to the engine. The sub-frame has a classic tubular layout and is further enhanced by the way it is coupled with the exhaust system, the plastic parts and the tail light.

This sophisticated, light and robust structure enables the Monster to achieve the lowest kerb weight in its category(205.5 Kg).

Suspension
The geometry of the frame, inspired by racing bikes, is completed by inverted forks (Ø 43 mm), while the rear suspension is entrusted to a Sachs monoshock with adjustable compression and extension, mounted on one side vertically on the cylinder head and, on the other, on a sturdy Ducati double-sided swingarm.

This exceptional suspension allows contact with the wheel to be maintained and guarantees control and agility even in extreme driving conditions.

10-spoke wheels
The ten-spoke lightweight aluminium alloy wheels guarantee agility and perfect control of the set-up at all speeds. The 3.5x17 front wheel and 6x17 rear are fitted with Pirelli Diablo Rosso II 120/70 ZR and 180/60 ZR tyres respectively.

Customised ergonomics
The dimensions of the new Monster 821 have been completely redefined and its ergonomics redesigned to offer maximum versatility in all situations and driving conditions.

The new dimensions of the Monster provide ample space even for a rider 1.85 m tall and a passenger 1.75 m tall, also enabling you to transport luggage without any problems.

The seat position is very comfortable, ideal even for long distances, and the driving position is upright thanks to the best possible positioning of the handlebars. The whole thing is completed by a passenger seat with an easily removable cover, and lowered footpegs and handles which make the ride comfortable and enjoyable for the passenger.

Equipment:

2015 Ducati Monster 821 Exterior
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Front headlight
The front of the new Monster 821 is dominated by a rounded headlight and flanked by forks, a distinctive feature of the imposing, unmistakable shape of the Monster
The headlight is made up of a modern unit that uses a bulb for high and low beam and LED technology for the two parking lights located on the sides

The encased tail light is fully LED.

Ducati Safety Pack (DSP)
The designers of the new Monster didn’t focus solely on achieving excellent performance, but also on guaranteeing a high level of safety for the rider and passenger in all driving conditions. This second goal has been achieved by providing the Monster 821 with the Ducati Safety Pack (DSP) as standard, along with the 9MP ABS system and the 8-profile Ducati Traction Control (DTC).

Passenger handles
Particular care has been taken with passenger comfort, with a wide padded seat, footpegs that ensure an optimum riding position, and standard ergonomically shaped handles built into the bike’s design.

Instrumentation
The Monster 821’s compact instrument panel has lights on the upper part of the dashboard for warnings relating to neutral, indicators, full beams, engine rpm limit, oil pressure and fuel reserve, while the lower part is comprised of an LCD display with a DOT-Matrix area to display all the other data.

The display gives information about speed, rpm. totaliser, trip1 and trip2, engine cooling liquid temperature, ambient temperature and clock. In addition, it displays present fuel consumption, average fuel consumption, average speed and duration of trip. The DOT-Matrix area permanently displays the Riding Mode selected and the corresponding ABS and DTC levels set, and the 3 Riding Modes available can be selected very easily both when stationary and when in motion by using the indicator return button.

Adjustable seat
The new Monster 821 is fitted with an adjustable seat (± 25 mm) that can adapt to the needs of customers all over the world.

The standard seat height can easily be adjusted to the lowest (785 mm) or highest (810 mm) positions. In addition, two optional seats allow riders to lower it another 20 mm (765/790 mm) or even 40 mm (745/770 mm).

Ride-by-Wire
The Ride-by-Wire (RbW) system is an electronic interface between the engine and the Monster’s twistgrip, which enables the ideal power to be delivered to be set depending on the Riding Mode selected.
The twistgrip doesn’t have a throttle cable directly linked to the throttle bodies, but sends a signal to the control unit which, in turn, electronically controls the opening of the throttle bodies

The RbW system uses three different mappings to regulate power delivery:
• 112 hp for a sports delivery
• 112 hp for a progressive delivery suitable for touring
• 75 hp for a progressive delivery suitable for city use

Ducati Traction Control (DTC)
Ducati’s DTC gives the rider a choice of eight profiles or "sensitivity levels", each programmed with a different wheelspin tolerance value, matched to progressive levels of riding skill, and graded from one to eight. A preset level at which DTC intervenes is assigned to each Riding Mode. When DTC is on, the control unit analyses the data sent from the front and rear wheel speed sensors, detects the amount of wheelspin, and works out what type of intervention is necessary. This intervention is carried out very smoothly by electronically slowing down the engine injection to reduce torque, until rear grip is completely restored. DTC can also be disabled by the rider.

The DTC profiles are factory pre-set for each of the three Riding Modes, but can be customised individually and saved in order to best meet the needs of the rider. The initial settings can easily be reset via the "default" option.

9 MP ABS (Anti-Lock Braking System)
The ABS system provided is a 9MP multi-calibration one that lets the rider switch from one configuration to another by selecting the desired Riding Mode. The 9MP ABS prevents the front and rear wheels from locking and has further improved rear lift-up prevention, providing a very short stopping distance and high stability by using the information received from the pressure sensor located on the front wheel callipers. The ABS can also be disabled by the rider. The ABS-Off option can be selected from the Riding Modes configurations and stays on even after turning the ignition off.

180/60 rear tyre
At the rear the Monster 821 uses a Pirelli Diablo Rosso II 180/60ZR17 tyre with the same width/height ratio as is used in national and world Supersport competitions, which offers a larger contact area than the "classic" 180/55; the higher and slightly wider contour improves handling and rider comfort, while the larger contact area increases traction in acceleration and improves stability on the straight.

Riding Modes
The new Monster incorporates the most innovative, state-of-the-art Ducati technology, including the renowned Ducati Riding Modes. The three Riding Modes (URBAN, TOURING, SPORT) combine the leading technologies in the product class, such as Ride-by-Wire (RbW), Ducati Traction Control (DTC), and 9MP ABS with multiple settings. The rider can change the character of the bike by simply clicking a button, even mid-ride, choosing the configuration that best suits his riding style or the road conditions from the three different pre-set options (Riding Modes). The Riding Modes allow the rider to instantly change the power delivered by the engine and the DTC and ABS activation levels.

The Riding Modes are factory pre-set for each of the three parameters, but can be customised individually and saved in order to best meet the needs of the rider. The initial settings can easily be reset via the "default" option.

Specifications

2015 Ducati Monster 821 Exterior
- image 566489
Engine Type Testastretta 11° L-Twin, 4 Desmodromically actuated valves per cylinder, liquid cooled
Displacement 821cc
Bore x Stroke 88 x 67.5mm
Compression ratio 12.8:1
Power 82.4 kW (112 hp) @ 9,250 rpm
Torque 89.4 Nm (65.8 lb-ft) @ 7,750 rpm
*Technical data referring to power and torque was measured on an engine test stand at Ducati.
Fuel injection Electronic fuel injection system, 53mm throttle bodies with full Ride by Wire
Exhaust Stainless steel muffler and aluminium and cap; lightweight 2-1 system with catalytic converter with 2 lambda probes
Gearbox 6 speed
Primary drive Straight cut gears, ratio 1.85:1
Ratio 1=37/15 2=30/17 3=28/20 4=26/22 5=24/23 6=23/24
Final drive Front sprocket 15; Rear sprocket 46
Clutch APTC slipper and self-servo wet multiplate clutch with control cable
Frame Tubular steel Trellis frame attached to the cylinders head
Front suspension Upside down 43mm forks
Front wheel 10-spoke in light alloy 3.50" x 17"
Front Tyre 120/70 ZR 17 Pirelli Diablo Rosso II
Rear suspension Progressive linkage with adjustable monoshock. Aluminium double-sided swingarm
Rear wheel 10-spoke in light alloy 5.50" x 17"
Rear tyre 180/60 ZR17 Pirelli Diablo Rosso II
Front wheel travel 130mm (5.1in)
Rear wheel travel 140mm (5.5 in)
Front brake 2 x 320mm semi-floating discs, radially mounted Monobloc Brembo M4-32 callipers, 4-pistons, radial pump with ABS as standard
Rear brake 245mm disc, 2-piston floating calliper with ABS as standard equipment
Instrumentation LCD display
Dry weight 179.5kg (395.7lb)
*Weight data refers to the dry weight of the motorcycle without battery, lubricants and coolants for liquid-cooled models.
Wet weight (KERB) 205.5kg (453lb)
*Kerb weights indicate total bike weight with all operating consumable liquids and a fuel tank filled to 90% of capacity (as per EC standard 93/93).
Seat height Adjustable 785 - 810 mm (30.9 - 31.9)
Wheelbase 1480mm (58.3in)
Rake 24,3°
Trail 93.2mm (3.7in)
Fuel tank capacity 17.5l - (4.6 US gal)
Number of seats Dual seat
Standard Equipment Riding modes,Power modes, DSP Ducati Safety Pack (ABS + DTC), RbW, seat cover passanger handles, ready for anti-theft system and DDA
Warranty 24 months unlimited mileage
Maintenance service intervals 15.000km (9.000m)/12 Months
Valve clearance check 30.000km (18,000m)
Emissions and Consumption Standard Euro 3
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