The Ducati Monster 821 Dark motorcycle specifications include a 821 cc (50.10 cu in) engine, power of 112 hp (81.8 kW) @ 9,250 rpm, a 6-speed gearbox, and a listed weight of 205.5 kg (453 lb).
Key specifications
The 2015 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Ducati Monster 821 Dark compares
This compares the motorcycle with all Ducati models in this specifications database. The blue marker is this model and the grey line is the Ducati database average.
About 7% higher than the Ducati database average. Around the 61st percentile across Ducati models.
About 6% lower than the Ducati database average. Around the 38th percentile across Ducati models.
Very close to the Ducati database average. Around the 55th percentile across Ducati models.
Very close to the Ducati database average. Around the 30th percentile across Ducati models.
About 5% larger than the Ducati database average. Around the 72nd percentile across Ducati models.
Ducati database percentile rankings
Percentiles show where this motorcycle sits across the Ducati specifications database. They are descriptive database rankings, not performance ratings.
112 hp — more powerful than about 61% of Ducati models with power data.
821 cc — larger displacement than about 38% of Ducati models.
205.5 kg — heavier than about 55% of Ducati models, or lighter than about 45%.
785 mm — taller than about 30% of Ducati models.
17.5 L — larger than about 72% of Ducati fuel tanks in this database.
Dimensions compared with Ducati average
Each measurement is compared with the average value across Ducati models where that dimension is available.
2,170
2,131
Close to average.
800
823
Close to average.
1,055
1,124
6% below average.
1,480
1,474
Close to average.
785
808
Close to average.
Mechanical overview
Additional useful specifications
| Front tire size | 120/70-ZR17 |
|---|---|
| Rear tire size | 180/55-ZR17 |
| Power-to-weight ratio | 0.545 hp/kg |
| Power-to-weight | 545.0 hp/tonne |
| Specific power | 136.4 hp/L |
| Bore/stroke ratio | 1.30:1 (Oversquare) |
Engine specifications
| Engine type | V2, four-stroke |
|---|---|
| Displacement | 821 cc (50.10 cu in) |
| Power | 112 hp (81.8 kW) @ 9,250 rpm |
| Torque | 89.4 Nm (9.1 kgf-m or 65.9 ft.lbs) @ 7,750 rpm |
| Bore × stroke | 88.0 x 67.5 mm (3.5 x 2.7 inches) |
| Compression ratio | 12.8:1 |
| Valves per cylinder | 4 |
| Cooling system | Air |
| Fuel system | Injection. 53mm throttle bodies with full Ride by Wire |
| Fuel control | Desmodromic valve control |
| Starter | Electric |
Transmission and drivetrain
| Gearbox | 6-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | APTC slipper and self-servo wet multiplate clutch with control cable |
Chassis and suspension
| Frame | Tubular steel Trellis frame attached to the cylinders head |
|---|---|
| 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) |
| Rake | 24.0° |
| Trail | 87 mm (3.4 inches) |
Brakes, wheels and tires
| Front brakes | Double disc. ABS. Four-piston calipers. |
|---|---|
| Rear brakes | Single disc. ABS. Two-piston calipers. |
| Front tire | 120/70-ZR17 |
| Rear tire | 180/55-ZR17 |
| Wheels | 10-spoke in light alloy |
Dimensions and weight
| Wet weight | 205.5 kg (453 lb) |
|---|---|
| Dry weight | 179.5 kg (395.7 lb) |
| Seat height | 785 mm (30.9 inches) |
| Alternate seat height | 810 mm (31.9 inches) If adjustable, highest setting. |
| Overall length | 2,170 mm (85.4 inches) |
| Overall width | 800 mm (31.5 inches) |
| Overall height | 1,055 mm (41.5 inches) |
| Wheelbase | 1,480 mm (58.3 inches) |
Fuel and emissions
| Fuel capacity | 17.50 L (4.62 US gal) |
|---|---|
| Emission details | Euro 3 |
Performance
| Power/weight ratio | 0.6240 hp/kg |
|---|
Electrical and instruments
| Instruments | Digital unit displaying |
|---|
Other specifications
| Color options | Dark stealth |
|---|---|
| Seat | Dual seat |
| Exhaust system | Stainless steel muffler and aluminium and cap; lightweight 2-1 system with catalytic converter with 2 lambda probes |
| Factory warranty | 2 years unlimited mileage |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Ducati models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Ducati information before relying on them. Visit the official Ducati website.