2021 Triumph Bonneville Bobber vs 2021 BMW R 1250R

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles
2021 Triumph Bonneville Bobber 2021 Triumph Bonneville Bobber

Naked bike

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
251 kg / 553 lbs
2021 BMW R 1250R 2021 BMW R 1250R

Naked bike

Engine
Twin, four-stroke
Power
136 hp / 100 kW @ 7750 rpm
Top Speed
201.2 km/h / 125.0 mph
Weight
526.9 pounds
Full Specifications
General
Comments-2 Ride Modes (Rain/Road). Automatic Stability Control.
Year20212021
Colours-Black Storm Metallic, Blue/Red/White, Mineral Gray Metallic
Make ModelTriumph Bonneville BobberBMW R 1250R
Dimensions
Storage-Saddle bags
Seat Height690 - 700 mm / 27.2 - 27.6 in820 mm / 32.3 in OE low seat: 760 mm / 29.9 in OE sport seat: 840 mm / 33.0 in
Wheelbase1500 mm / 59.1 in1515 mm / 59.6 in
Height1024 - 1055 mm / 40.3 - 41.5 in1300 mm / 51.1 in
Length1024 - 1055 mm / 40.3 - 41.5 in2165 mm / 85.2 in
Width800 mm / 31.5 in880 mm / 34.6 in
Weights & Capacities
Fuel Capacity12 Litres / 3.2 US gal18 Litres / 4.7 US gal
Wet Weight251 kg / 553 lbs239 kg / 526.9 lbs
Performance
Top Speed-201.2 km/h / 125.0 mph
Max Power57.5 kW / 76.9 hp @ 6100 rpm136 hp / 100 kW @ 7750 rpm
Max Torque106 Nm / 78.2 lb-ft @ 4000 rpm143 Nm / 105.4 lb-ft @ 6250 rpm
Engine
Fuel Control-Double Overhead Cams/Twin Cam (DOHC)
Engine Type-Twin, four-stroke
CO2-109.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Displacement1198 cc / 73.1 cu in1254 cc / 76.5 cu-in
Engine DetailFour stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinderFour stroke, two cylinder horizontally opposed Boxer, with two overhead, spur gear driven camshafts , a counterbalance shaft and variable intake camshaft control system BMW ShiftCam, 4 valves per cylinder, Intake 40mm, outlet 34 mm
Fuel System-Injection. Electronic fuel injection with ride-by-wire throttle system
Bore x Stroke97.6 x 80 mm102.5 x 76 mm
Compression Ratio10.0:112.5:1
Cooling SystemLiquid cooledLiquid / Air cooled
EmissionsEURO5Closed-loop three-way catalytic converter, compliant with Euro 5 emission standard
Engine Lubrication-Wet sump
Engine Management-Digital engine control: BMS-O with e-gas
ExhaustBrushed stainless steel 2 into 2 twin-skin exhaust system with brushed stainless silencers-
Fuel Consumption-4.70 litres/100 km (21.3 km/l or 50.05 mpg)
Fuel InductionMultipoint sequential electronic fuel injectionElectronic intake pipe fuel injection, 52mm throttle valve
Fuel Reserve-4.00 litres / 1.06 US gallons
Fuel Type-Super petrol unleaded, octane number 95 (ROZ), adaptation through engine control (91 to 98 ROZ)
IgnitionDigital-
LubricationWet sump-
Starter-Electric
Valve System-4
EV Specifics
Battery Capacity-12 V / 11.8 Ah, maintenance-free
Drivetrain
ClutchWet, multi-plate, torque assist clutchWet clutch with anti-hopping function, hydraulically activated
Final DriveChainShaft
Gearbox-6-speed
Transmission / Drive6-SpeedConstant mesh 6-speed gearbox with helical gearing system
Chassis
Frame TypeTubular steel, twin cradle frameTwo-section frame concept consisting of main frame with bolt-on rear frame, load-bearing engine
Suspension - Front47 mm Showa cartridge forksTelescopic Upside-Down fork; stanchion diameter 45 mm
Suspension - RearMono-shock RSU with linkageCast aluminium single-sided swing arm with BMW Motorrad Paralever; WAD strut (travel- related damping), spring pre-load hydraulically adjustable (continuously variable) at handwheel, rebound damping adjustable at handwheel
Rake25.4°27.7°
Steering Angle-62.3°
SwingarmTwin sided fabrication-
Trail92.0 mm / 3.6 in125.6 mm / 4.9 in
Wheel Travel - Front90 mm / 3.5 in140 mm / 5.5 in
Wheel Travel - Rear73 mm / 2.8 in140 mm / 5.5 in
Wheels & Brakes
Brakes - Front2x 310mm disc, Brembo 2-piston sliding axial calipers2x 320mm floating discs, 4-piston radial brake calipers
Brakes - RearSingle 255mm disc, Nissin single piston sliding axial caliperSingle 276mm disc, 2-piston floating caliper
ABSStandardBMW Motorrad Integral ABS (part integral), disengageable
Rims-Cast aluminium
Tyres - Front130/90 B16120/70 ZR17
Tyres - Rear150/80 R16180/55 ZR17
Wheels-Cast aluminium wheels
Wheels - FrontWire 32-spoke, 16 x 2.5 in3.50 x 17 in
Wheels - RearWire 32-spoke, 16 x 3.5 in5.50 x 17 in

Verdict

Winner on specs

2021 BMW R 1250R

The 2021 BMW R 1250R edges out the 2021 Triumph Bonneville Bobber thanks to its higher torque, larger fuel tank, higher rear wheel travel and higher front wheel travel. Specifications are one part of the picture - dealer support, parts availability, and intended use all matter too.

Key Differences

2021 Triumph Bonneville Bobber - Advantages

  • Lower seat height: 690 - 700 mm vs 820 mm - accessible to a wider range of rider heights.

2021 BMW R 1250R - Advantages

  • Higher torque: 143 Nm vs 106 Nm - more pulling power across the rev range.
  • Larger fuel tank: More range between stops - an advantage on touring routes and remote roads.
  • More rear wheel travel: 140 mm vs 73 mm - absorbs bigger hits and rough terrain better.
  • More front wheel travel: 140 mm vs 90 mm - greater compliance over rough surfaces.

2021 Triumph Bonneville Bobber vs 2021 BMW R 1250R - FAQs

What are the engine differences between the 2021 Triumph Bonneville Bobber and 2021 BMW R 1250R?
The 2021 Triumph Bonneville Bobber uses Four stoke, parallel twin, 270° crank angle, SOHC, 4 valve per cylinder, while the 2021 BMW R 1250R is powered by Twin, four-stroke.
Which is lighter, the 2021 Triumph Bonneville Bobber or the 2021 BMW R 1250R?
The 2021 BMW R 1250R is lighter at 239 kg compared to 251 kg for the 2021 Triumph Bonneville Bobber - a difference of 12 kg. This is a meaningful difference that affects handling and rider fatigue.
Which bike is better for shorter riders, the 2021 Triumph Bonneville Bobber or the 2021 BMW R 1250R?
The 2021 Triumph Bonneville Bobber has the lower seat at 690 - 700 mm, making it more accessible. The 2021 BMW R 1250R sits higher at 820 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 2021 Triumph Bonneville Bobber or the 2021 BMW R 1250R?
The 2021 BMW R 1250R has the larger tank at approximately 18 litres vs 12 litres for the 2021 Triumph Bonneville Bobber. At 5-6 l/100 km that is roughly 300-360 km vs 200-240 km between stops.
Which should I buy, the 2021 Triumph Bonneville Bobber or the 2021 BMW R 1250R?
Both are strong choices. The 2021 Triumph Bonneville Bobber has the edge in lower seat height, while the 2021 BMW R 1250R stands out for higher torque and larger fuel tank. Visit dealers, arrange test rides, and factor in local parts and service costs - these often matter as much as the spec sheet.