Ducati S4R
113 hp, 996 cc, 459 lbs2003 - 2006
Ducati Monster 821
112 hp, 821 cc, 452 lbs2016 - 2020
EngineDucati S4RDucati Monster 821
Displacement996 cc821 cc
Max power113 hp (@8 750 RPM)112 hp (@9 250 RPM)
Max torque70 lb ft (@7 000 RPM)65 lb ft (@7 750 RPM)
Redline10 000 RPM10 500 RPM
Idling speed1 200 RPM1 200 RPM
ManagementFuel InjectionFuel Injection
LayoutDOHC Desmodue V2DOHC Desmodue V2
Compression11.60:112.80:1
Oil capacity3.22 quart
Oil type10W4010W40, Motul 300V 10W40
Spark plug typeCHAMPION RA 59 GC, NGK DCPR9EVX
CoolingLiquidLiquid
Valves88
Bore94.0 mm88.0 mm
Stroke66.0 mm67.5 mm
Throttle bore53.0 mm
Weight to power4.06 lbs/hp4.04 lbs/hp
Power to weight616 hp/2500lbs619 hp/2500lbs
Battery type12V 10Ah
GearboxDucati S4RDucati Monster 821
TypeSequentialSequential
ClutchDryWet
DriveChainChain
Chain typeDID 525 VL4 104 links
Gears count66
Primary ratio1.841.85
Final drive2.83.067
1. gear2.46 (58 mph)2.466 (57 mph)
2. gear1.764 (81 mph)1.764 (79 mph)
3. gear1.35 (106 mph)1.4 (100 mph)
4. gear1.09 (131 mph)1.181 (119 mph)
5. gear0.958 (150 mph)1.043 (135 mph)
6. gear0.857 (167 mph)0.958 (147 mph)
ChasisDucati S4RDucati Monster 821
Frame typeTubular trellis steel frameTubular steel Trellis frame attached to the cylinders head
Front susp.43mm USD fork, 5.12 in travelUpside down 43mm forks, 5.12 in travel
Rear susp.Monoshock, 2.56 in travelAluminium double-sided swingarm, adjustable monoshock. 5.51 in travel.