Ducati Monster 821 Stealth (2019)

The Ducati Monster 821 Stealth (2019) motorcycle boasts a four-stroke, Testastretta L-twin engine with a capacity of 821 cc. This liquid-cooled bike has a compression ratio of 12.8:1 and utilizes an electronic fuel injection system with 53mm throttle bodies enabled with the Ride by Wire technology for improved performance. The engine generates a max power of 80 kW / 109 hp @ 9250 rpm and max torque of 86 Nm / 9.1 kgf-m / 63 lb-ft @ 7750 rpm. The clutch is slipper and self-servo wet multiplate, and the bike has six-speed transmission with a chain final drive. The straight-cut gears have a ratio of 1.85:1. The tubular steel Trellis frame is attached to the cylinders head, and the front suspension features a Kayaba 43mm upside-down fork with a 130mm wheel travel. The rear suspension is a progressive linkage with adjustable monoshock and an aluminum double-sided swingarm that boasts a 140mm wheel travel. The front brakes consist of two 320mm semi-floating discs, radially mounted Monobloc Brembo M4-32 calipers, four-pistons, and axial pump with ABS as standard equipment. The rear brakes have a single 245mm disc, a 2-piston floating caliper with ABS as standard equipment. The bike runs on Pirelli Diablo Rosso III tires on both front and rear 10-spoke lightweight alloy wheels. It has a rake of 24.3 degrees and a trail of 93.2mm / 3.7in. The wheelbase measures 1480mm / 58.3in, and the seat height is adjustable between 785mm – 810mm / 30.9in – 31.9in. The dry weight of the bike is 180.5 kg / 398 lbs, and the fuel capacity is 16.5 Litres / 4.36 US gal.

---

Technical specifications:

Make Model: Ducati Monster 821 Stealth

Year: 2019

Engine: Four stroke, Testastretta 11 degrees L-Twin, 4 Desmodromically actuated valves per cylinder

Capacity: 821 cc / 50.1 cu-in

Bore x Stroke: 88 x 67.5 mm

Cooling System: Liquid cooled

Compression Ratio: 12.8:1

Exhaust: Stainless steel muffler and aluminium and cap; lightweight 2-1 system with catalytic converter with 2 lambda probes

Induction: Electronic fuel injection system, 53mm throttle bodies with full Ride by Wire

Ignition: Marelli electronic

Starting: Electric

Max Power: 80 kW / 109 hp @ 9250 rpm

Max Torque: 86 Nm / 9.1 kgf-m / 63 lb-ft @ 7750 rpm

Clutch: Slipper and self-servo wet multiplate clutch with mechanical control

Transmission: 6 Speed

Final Drive: Chain, Front sprocket 15; Rear sprocket 46

Gear Ratio: 1st 37/15 2nd 30/17 3rd 28/20 4th 26/22 5th 24/23 6th 23/24

Primary Drive: Straight cut gears, ratio 1.85:1

Frame: Tubular steel Trellis frame attached to the cylinders head

Front Suspension: Kayaba 43mm upside-down fork

Front Wheel Travel: 130 mm / 5.1 in

Rear Suspension: Progressive linkage with adjustable monoshock. Aluminum double-sided swingarm

Rear Wheel Travel: 140 mm / 5.5 in

Front Brakes: 2 x 320 mm semi-floating discs, radially mounted Monobloc Brembo M4-32 callipers, 4-pistons, axial pump with ABS as standard equipment

Rear Brakes: Single 245 mm disc, 2-piston floating calliper with ABS as standard equipment

Front Wheel: 10-spoke in light alloy, 3.50 in x 17 in

Rear Wheel: 10-spoke in light alloy, 5.50 in x 17 in

Front Tyre: 120/70 ZR 17 Pirelli Diablo Rosso III

Rear Tyre: 180/55 ZR17 Pirelli Diablo Rosso III

Rake: 24.3 degrees

Trail: 93.2mm / 3.7in

Wheelbase: 1480 mm / 58.3 in

Seat Height: 785 mm – 810 mm / 30.9 in – 31.9 in

Dry Weight: 180.5 kg / 398 lbs

Wet Weight: 206 kg / 454 lbs

Fuel Capacity: 16.5 Litres / 4.36 US gal