2021 BMW G 310R vs 2021 KTM 390 Duke

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles
2021 BMW G 310R 2021 BMW G 310R

Sport

Engine
Single cylinder, four-stroke
Power
25 kW / 34 hp @ 9250 rpm
Top Speed
88.9 mph
Weight
164 kg / 361.5 lbs
2021 KTM 390 Duke 2021 KTM 390 Duke

Sport

Engine
Four stroke, single cylinder, DOHC with finger followers, 4 valves
Power
43.5 hp / 32 kW @ 9500 rpm
Top Speed
N/A
Weight
149 kg / 328 lbs
Full Specifications
General
Year20212021
ColoursPearl White Metallic, Cosmic Black, Racing Red-
Make ModelBMW G 310RKTM 390 Duke
Dimensions
Seat Height785 mm / 30.9 in OA low seat: 770 mm / 30.3 in OE high seat: 800 mm / 31.4 in830 mm / 32.7 in
Wheelbase1380 mm / 54.3 in1357 mm / 53.4 in
Ground Clearance-175 mm / 6.8 in
Height1080 mm / 42.5 in-
Length2005 mm / 78.9 in-
Width849 mm / 33.4 in-
Weights & Capacities
Dry Weight158.5 kg / 349.4 lbs149 kg / 328 lbs
Fuel Capacity11 Litres / 2.9 US gal13.4 Litres / 3.5 US gal
Wet Weight164 kg / 361.5 lbs-
Performance
Top Speed143.0 km/h / 88.9 mph-
Max Power25 kW / 34 hp @ 9250 rpm43.5 hp / 32 kW @ 9500 rpm
Max Torque28 Nm / 20.7 ft-lb @ 7500 rpm37 Nm / 27.2 lb-ft @ 7000rpm
Power-to-Weight Ratio0.2115 HP/kg-
Engine
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)-
CO277.3 CO2 g/km. (CO2 - Carbon dioxide emission)-
Engine TypeSingle cylinder, four-stroke-
Displacement313 cc / 19.1 cu in373 cc / 22.7 cu-in
Engine DetailSingle cylinder, DOHC and cam followers, 4 valvesFour stroke, single cylinder, DOHC with finger followers, 4 valves
Fuel SystemInjection-
Bore x Stroke80 x 62.1 mm89 x 60 mm
Compression Ratio10.9:112.6:1
Cooling SystemLiquid CooledLiquid Cooled
EmissionsClosed-loop 3-way catalytic converter, emission standard EU-5EURO5
Fuel Consumption3.33 litres/100 km (30.0 km/l or 70.64 mpg)-
Fuel InductionElectronic fuel injectionBosch Injection
Fuel Reserve1.00 litres / 0.26 US gallons-
Ignition-Bosch EMS with RBW
Lubrication-Wet sump
StarterElectricElectric
EV Specifics
Battery Capacity12 V / 8 Ah, maintenance-free-
Drivetrain
ClutchMulti-disc oil bath (anti-hopping) with self-reinforcementWet multi-disc clutch, hydraulically actuated
Final DriveEndless X-ring chain with shock damping in rear wheel hubChain 520-X Ring
Transmission / Drive6-Speed, constant-mesh6 Speed
Chassis
Frame TypeTubular space frameSteel trellis frame, powder coated
Suspension - Front41mm USD telescopic fork43mm WP APEX 43
Suspension - RearCast aluminium dual swing arm, central spring strut, spring pre-load adjustableWP APEX - Monoshock
Steering Head Angle64.9°65°
Trail114 mm / 4.48 in-
Wheel Travel - Front140 mm / 5.5 in142 mm / 5.6 in
Wheel Travel - Rear131 mm / 5.5 in150 mm / 5.9 in
Electrical Systems
AlternatorThree-phase alternator with 308 W-
Wheels & Brakes
Brakes - FrontSingle 300mm disc, 4-piston fixed caliper, radially boltedSingle 320 mm disc, 4 piston radial fixed caliper
Brakes - RearSingle 240mm disc, single-piston floating caliperSingle 230 mm disc, 1 piston floating caliper
ABSBMW Motorrad ABSBosch 9.1MP Two Channel ABS (Supermoto ABS)
RimsCast aluminum wheels-
Rims - Front3.0 x 17-
Rims - Rear4.0 x 17-
Tyres - Front110/70 R17110/70 -17
Tyres - Rear150/60 R17150/60-17
Wheels5-Spoke, cast aluminium-

Verdict

Winner on specs

2021 KTM 390 Duke

The 2021 KTM 390 Duke edges out the 2021 BMW G 310R thanks to its higher torque, lighter kerb weight, higher rear wheel travel and larger displacement. Specifications are one part of the picture - dealer support, parts availability, and intended use all matter too.

Key Differences

2021 BMW G 310R - Advantages

  • Lower seat height: 785 mm vs 830 mm - accessible to a wider range of rider heights.

2021 KTM 390 Duke - Advantages

  • Higher torque: 37 Nm vs 28 Nm - more pulling power across the rev range.
  • Lighter: 149 kg vs 164 kg - easier to handle and less fatiguing on long trips.
  • Larger displacement: 373 cc vs 313 cc - more cubic capacity means broader torque delivery and greater low-end pull.
  • More rear wheel travel: 150 mm vs 131 mm - absorbs bigger hits and rough terrain better.

2021 BMW G 310R vs 2021 KTM 390 Duke - FAQs

What are the engine differences between the 2021 BMW G 310R and 2021 KTM 390 Duke?
The 2021 BMW G 310R uses Single cylinder, four-stroke, while the 2021 KTM 390 Duke is powered by Four stroke, single cylinder, DOHC with finger followers, 4 valves.
Which is lighter, the 2021 BMW G 310R or the 2021 KTM 390 Duke?
The 2021 KTM 390 Duke is lighter at 149 kg compared to 164 kg for the 2021 BMW G 310R - a difference of 15 kg. This is a meaningful difference that affects handling and rider fatigue.
Which bike is better for shorter riders, the 2021 BMW G 310R or the 2021 KTM 390 Duke?
The 2021 BMW G 310R has the lower seat at 785 mm, making it more accessible. The 2021 KTM 390 Duke sits higher at 830 mm. A seat height below 800 mm suits most riders; above 820 mm shorter riders may need to tiptoe.
Which should I buy, the 2021 BMW G 310R or the 2021 KTM 390 Duke?
Both are strong choices. The 2021 BMW G 310R has the edge in lower seat height, while the 2021 KTM 390 Duke stands out for higher torque and lighter kerb weight. Visit dealers, arrange test rides, and factor in local parts and service costs - these often matter as much as the spec sheet.