Ducati Monster 821 – That's why #welovemonster

The Monster 821 pays homage to the legacy of the Monster 900, which over 25 years ago revolutionised the motorcycle world which set the benchmark for all naked sports bikes.

The design of the new Monster 821 are true to the original lines of the bike born in 1993 but revisited with a modern flair. The silhouette and unmistakable tank also comes with a fastening hook, just like the first Monster.

With its sporty performance and agility, the new Monster 821 has been designed for maximum riding pleasure. The performance of the 109 HP Testastretta 11° engine is enhanced by the Ducati Safety Pack (ABS and Ducati Traction Control) and the Riding Modes (sport, touring, urban), which guarantee maximum safety always and everywhere.

In 2018, the Ducati Monster 821 has been sharpened to follow the lines of its three bigger brothers the Monster 1200, 1200S and the Monster 1200R

The Monster 821 is also available for those with a restricted A2 licence, as a version with 35 kW of regulated power.

The low maintenance Ducati Testastretta 11° engine of the Monster 821 allow for particularly long maintenance intervals and reduced running costs, with oil changes every 9,000 miles (or 12 months) and valve clearance and belt change (Desmo Service) every 18,000 miles. 

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Ducati Monster 821

The Monster 821 Engine

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.

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. 

Service Intervals

The meticulous design and top-quality materials used for the Monster have allowed amazing results to be achieved.

Adjusting the valve clearance is scheduled for every 30,000 km and changing the oil every 15,000 km, increasing service intervals and cutting running costs. These results were made possible by improving combustion efficiency and cutting the operating temperatures of the Testastretta 11° engine. 

Instruments

The Monster 821 now comes with a TFT display

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).

Specification

Specification

General

Instruments TFT display
Warranty 24 months unlimited mileage extendable
Service Interval 15.000km (9.000m)/12 Months
Valve Clearance 30.000km (18,000m)

Chassis

Frame Tubular steel Trellis frame attached to the cylinders head
Wheelbase 1480mm (58.3in)
Rake 24,3°
Trail 93.2mm (3.7in)
Front Suspension Upside down 43mm forks
Front Wheel 10-spoke in light alloy 3.50" x 17"
Front Wheel Travel 130mm (5.1in)
Front Brake 2 x 320mm semi-floating discs, radially mounted Monobloc Brembo M4-32 callipers, 4-pistons, axiial pump with ABS as standard
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 Wheel Travel 140mm (5.5 in)
Rear Brake 245mm disc, 2-piston floating calliper with ABS as standard equipment
Rear Tyre 180/60 ZR17 Pirelli Diablo Rosso II
Fuel Capacity 17.5l - (4.6 US gal)
Dry Weight 179.5kg (395.7lb)
Wet Weight
Seat Height Adjustable 785 - 810 mm (30.9 - 31.9)
Max Height 1055mm
Max Length 2170mm

Engine

Type Testastretta 11° L-Twin
Displacement 821
Bore And Stroke 88 x 67.5mm
Compression Ratio 12.8:1
Power 80 kW (109 hp) @ 9,250 rpm
Torque 86 Nm (63 lb-ft) @ 7,750 rpm
Fuel Delivery 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
Emissions Euro 4
Gearbox 6 speed
Ratio 1=37/15 2=30/17 3=28/20 4=26/22 5=24/23 6=23/24
Primary Drive Straight cut gears, ratio 1.85:1
Final Drive Front sprocket 15; Rear sprocket 46
Clutch APTC slipper and self-servo wet multiplate clutch with control cable

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