Ducati Monster 900 vs Ducati Monster 821
Side-by-side comparison for used motorcycle buyers
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Ducati Monster 900
Ducati Monster 821
Horsepower (hp)
73 hp
109 hp
Torque (Nm)
78 Nm
89 Nm
Top Speed (km/h)
210 km/h
230 km/h
Weight (kg) — lower is better
185 kg
193 kg
Type
Naked
Naked
Horsepower
73 hp @ 7,000 rpm
109 hp @ 9,250 rpm
Torque
78 Nm @ 5,500 rpm
89 Nm @ 7,750 rpm
Top Speed
210 km/h
230 km/h (estimated)
Weight
185 kg (wet/curb weight)
193 kg (wet/curb weight)
Fuel
6.5 L/100km (approx. 15.4 km/L) — estimated real-world average
6.5 L/100km (approx. 15.4 km/L, typical real-world average)
Fairing
No
No
Individual Reviews
Ducati Monster 900
7.5/10
"A rewarding classic, but only buy one with documented Desmo history."
Pros
+Timeless naked bike styling
+Characterful torquey V-twin
+Strong parts availability
Cons
−Expensive Desmo valve services
−Frequently neglected maintenance history
−Soft stock suspension
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.
