2020 Ducati Diavel 1260 S vs 2021 Triumph Bonneville Speedmaster

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles
2020 Ducati Diavel 1260 S 2020 Ducati Diavel 1260 S

Custom / cruiser

Engine
Four stroke, Testastretta DVT (Desmodromic Variable Timing), 90° L-Twin, 4 Desmodromically actuated valves per cylinder, dual spark
Power
159 hp / 117 kW @ 9500 rpm
Top Speed
N/A
Weight
244 kg / 538 lbs
2021 Triumph Bonneville Speedmaster 2021 Triumph Bonneville Speedmaster

Custom / cruiser

Engine
Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder
Power
57.5 kW / 76.9 hp @ 6100 rpm
Top Speed
N/A
Weight
263 kg / 580 lbs
Full Specifications
General
Year20202021
Make ModelDucati Diavel 1260 STriumph Bonneville Speedmaster
Dimensions
Seat Height780 mm / 30.7 in705 mm / 27.8 in
Wheelbase1600 mm / 63.0 in1500 mm / 59.1 in
Height-1055 mm /41.5 in
Length-2225 mm / 87.6 in
Width-910 mm / 35.8 in
Weights & Capacities
Dry Weight214 kg / 481 lbs-
Fuel Capacity17 Litres / 4.5 US gal12 Litres / 3.2 US gal
Wet Weight244 kg / 538 lbs263 kg / 580 lbs
Performance
Max Power159 hp / 117 kW @ 9500 rpm57.5 kW / 76.9 hp @ 6100 rpm
Max Torque128.9 Nm / 95 lb-ft @ 7500 rpm106 Nm / 78.2 lb-ft @ 4000 rpm
Engine
Displacement1262 cc / 77 cu-in1198 cc / 73.1 cu in
Engine DetailFour stroke, Testastretta DVT (Desmodromic Variable Timing), 90° L-Twin, 4 Desmodromically actuated valves per cylinder, dual sparkFour stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder
Bore x Stroke106 x 71.5 mm97.6 x 80 mm
Compression Ratio13.0:110.0:1
Cooling SystemLiquid cooledLiquid cooled
EmissionsEuro4EURO5
ExhaustStainless steel pipes and single muffler with twin tail pipes, Catalytic converter and 2 lambda probesChromed stainless steel 2 into 2 twin-skin exhaust system with chromed stainless silencers
Fuel InductionElectronic fuel injection system, Øeq 56 mm elliptical throttle bodies with Ride-by-Wire systemMultipoint sequential electronic fuel injection
IgnitionElectronicDigital
Lubrication-Wet sump
StarterElectric-
Drivetrain
ClutchSlipper and self-servo wet multiplate clutch with hydraulic controlWet, multi-plate, torque assist clutch
Final DriveChain, Front sprocket Z15, Rear sprocket Z43Chain
Gear Ratios1st 37/15, 2nd 30/17, 3rd 27/20, 4th 24/22, 5th 23/24, 6th 22/25-
Primary DriveStraight cut gears, Ratio 1.84:1-
Transmission / Drive6-Speed6-Speed
Chassis
Frame TypeTubular steel trellis frameTubular steel, twin cradle frame
Suspension - Front48 mm USD Öhlins adjustable fork, TiN treatment47 mm Showa cartridge forks
Suspension - RearÖhlins fully adjustable monoshock, Aluminium casted single-sided swingarmMono-shock RSU with linkage and preload adjustment
Rake27°25.3°
Swingarm-Twin sided fabrication
Trail120 mm / 4.7 in91.4 mm / 3.6 in
Wheel Travel - Front120 mm / 4.7 in-
Wheel Travel - Rear110 mm / 4.33 in-
Electronics
Equipment / FeaturesÖhlins fully adjustable suspension, Ducati Quick Shift up/down Evo (DQS), Cruise control, Ducati Power Launch Evo (DPL), Hands-Free, Backlit handlebar switches, 3.5″ TFT colour display, Full LED lighting system, Daytime Running | Safety Equipment Riding Modes, Power Modes, Ducati Safety Pack (Cornering ABS Evo, Ducati Traction Control Evo DTC), Ducati Wheelie Control Evo (DWC), Cruise control, Ducati Power Launch Evo (DPL), Hands-Free, Backlit handlebar switches, 3.5″ TFT colour display, Full LED lighting system, Self cancelling turn indicators-
Electrical Systems
Instrumentation3.5 in TFT colour display and dedicated warning light display-
Wheels & Brakes
Brakes - Front2 x 320mm semi-floating discs, Radially mounted Brembo monobloc 4-piston M4.32 callipers, PR18/19 radial master cylinder2 x 310mm disc, Brembo 2-piston sliding axial calipers
Brakes - RearSingle 265mm disc, 2-piston Brembo floating calliperSingle 255mm disc, Nissin single piston sliding axial caliper
ABSCornering ABS EvoStandard
Tyres - Front120/70 ZR17 Pirelli Diablo Rosso II130/90-16
Tyres - Rear240/45 ZR17 Pirelli Diablo Rosso II150/80-16
WheelsLight alloy, casted and machined,-
Wheels - Front3.50 x 17Wire 32-spoke, 16 x 2.5 in
Wheels - Rear8.00 x 17Wire 32-spoke, 16 x 3.5 in

Verdict

Winner on specs

2020 Ducati Diavel 1260 S

The 2020 Ducati Diavel 1260 S edges out the 2021 Triumph Bonneville Speedmaster thanks to its lighter kerb weight, larger fuel tank and larger displacement. Specifications are one part of the picture - dealer support, parts availability, and intended use all matter too.

Key Differences

2020 Ducati Diavel 1260 S - Advantages

  • Lighter: 244 kg vs 263 kg - easier to handle and less fatiguing on long trips.
  • Larger fuel tank: More range between stops - an advantage on touring routes and remote roads.
  • Larger displacement: 1262 cc vs 1198 cc - more cubic capacity means broader torque delivery and greater low-end pull.

2021 Triumph Bonneville Speedmaster - Advantages

  • Lower seat height: 705 mm vs 780 mm - accessible to a wider range of rider heights.

2020 Ducati Diavel 1260 S vs 2021 Triumph Bonneville Speedmaster - FAQs

What are the engine differences between the 2020 Ducati Diavel 1260 S and 2021 Triumph Bonneville Speedmaster?
The 2020 Ducati Diavel 1260 S uses Four stroke, Testastretta DVT, while the 2021 Triumph Bonneville Speedmaster is powered by Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder.
Which is lighter, the 2020 Ducati Diavel 1260 S or the 2021 Triumph Bonneville Speedmaster?
The 2020 Ducati Diavel 1260 S is lighter at 244 kg compared to 263 kg for the 2021 Triumph Bonneville Speedmaster - a difference of 19 kg. This is a meaningful difference that affects handling and rider fatigue.
Which bike is better for shorter riders, the 2020 Ducati Diavel 1260 S or the 2021 Triumph Bonneville Speedmaster?
The 2021 Triumph Bonneville Speedmaster has the lower seat at 705 mm, making it more accessible. The 2020 Ducati Diavel 1260 S sits higher at 780 mm. A seat height below 800 mm suits most riders; above 820 mm shorter riders may need to tiptoe.
Which has the larger fuel tank, the 2020 Ducati Diavel 1260 S or the 2021 Triumph Bonneville Speedmaster?
The 2020 Ducati Diavel 1260 S has the larger tank at approximately 17 litres vs 12 litres for the 2021 Triumph Bonneville Speedmaster. At 5-6 l/100 km that is roughly 283-340 km vs 200-240 km between stops.
Which should I buy, the 2020 Ducati Diavel 1260 S or the 2021 Triumph Bonneville Speedmaster?
Both are strong choices. The 2020 Ducati Diavel 1260 S has the edge in lighter kerb weight and larger fuel tank, while the 2021 Triumph Bonneville Speedmaster stands out for lower seat height. Visit dealers, arrange test rides, and factor in local parts and service costs - these often matter as much as the spec sheet.