The Ducati Monster 821 motorcycle was manufactured from 2017 to 2018, featuring a four-stroke Testastretta 11 degrees L-twin engine with a capacity of 821 cc. It has a liquid cooling system and a compression ratio of 12.8:1, with a lightweight 2-1 system exhaust made of a stainless steel muffler and aluminum cap. The Electronic Fuel Injection system uses 53mm throttle bodies with full Ride by Wire, and it is powered by a Marelli electronic ignition. It has a maximum power output of 80 kW at 9250 rpm, and a maximum torque of 86 Nm at 7750 rpm. The motorcycle uses a 6-speed transmission with a self-servo wet multiplate clutch, and a chain-driven final drive system with a gear ratio of 15/46. It has a tubular steel Trellis frame that is attached to the cylinder’s head, and the front suspension uses a Kayaba 43mm upside-down fork with a 130mm travel. The rear suspension is managed by a progressive linkage with an adjustable monoshock and an aluminum double-sided swingarm. The braking system features a 320mm semi-floating disc and radially mounted Monobloc Brembo M4-32 callipers with 4-pistons and axial pump at the front, and a single 245mm disc with 2-piston floating calliper at the rear, both with ABS as standard equipment. The wheels are 10-spoke light alloys with a 17-inch diameter, equipped with Pirelli Diablo Rosso III tyres; it has a wheelbase of 1480mm and a dry weight of 180.5kg with a fuel capacity of 16.5 litres. The motorcycle has a rake of 24.3 degrees and a trail of 93.2mm, with a seat height of 785-810mm.
Technical specifications:
Make Model: Ducati Monster 821
| Year | 2017 – 18 |
|---|---|
| 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″ x 17″ |
| Rear Wheel | 10-spoke in light alloy, 5.50″ x 17″ |
| 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 |
