Ducati Monster S4r vs Ducati Monster 821
Side-by-side comparison for used motorcycle buyers
Ducati Monster S4r vs Ducati Monster 821. Ducati Monster S4r: 113 hp @ 9,500 rpm hp, 192 kg (wet/curb weight) weight, top speed 240 km/h, Motoryk rating 7.8/10. Ducati Monster 821: 109 hp @ 9,250 rpm hp, 193 kg (wet/curb weight) weight, top speed 230 km/h (estimated), Motoryk rating 8.0/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Ducati Monster S4r
Ducati Monster 821
Horsepower (hp)
113 hp
109 hp
Torque (Nm)
103 Nm
89 Nm
Top Speed (km/h)
240 km/h
230 km/h
Weight (kg) — lower is better
192 kg
193 kg
Type
Naked
Naked
Horsepower
113 hp @ 9,500 rpm
109 hp @ 9,250 rpm
Torque
103 Nm @ 7,750 rpm
89 Nm @ 7,750 rpm
Top Speed
240 km/h
230 km/h (estimated)
Weight
192 kg (wet/curb weight)
193 kg (wet/curb weight)
Fuel
7.5 L/100km (estimated real-world average)
6.5 L/100km (approx. 15.4 km/L, typical real-world average)
Fairing
No
No
Individual Reviews
Ducati Monster S4r
7.8/10
"An intoxicating machine for riders who respect their spanners."
Pros
+Testastretta engine is breathtaking
+Head-turning Italian drama
+Chassis balance near-perfect
Cons
−Desmo service costs are brutal
−Marginal urban heat management
−Electrical reliability genuinely questionable
Ducati Monster 821
8.0/10
"A brilliant middleweight if bought with eyes wide open."
Pros
+Intoxicating V-twin soundtrack
+Razor-sharp chassis feedback
+Genuinely usable power delivery
Cons
−Expensive Ducati servicing costs
−Neglected examples are everywhere
−Uncomfortable seat long distance
Top 10 Accessories
Picks that work on either bike.
