2018 KTM 390 Duke vs 2020 BMW G 310R

Full specifications comparison • 2 motorcycles

Comparing 2 motorcycles
2018 KTM 390 Duke 2018 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
2020 BMW G 310R 2020 BMW G 310R

Sport

Engine
Single cylinder, four-stroke
Power
25 kW / 34 hp @ 9500 rpm
Top Speed
88.9 mph
Weight
158.5 kg / 349 lbs
Full Specifications
General
Year2017 - 182020
Colours-HP Motorsport, Cosmic Black, Racing Red
Make ModelKTM 390 DukeBMW G 310R
Dimensions
Seat Height830 mm / 32.7 in785 mm / 30.9 in
Wheelbase1357 mm / 53.4 in1374 mm / 54.1 in
Ground Clearance185 mm / 7.3 in-
Height-1080 mm / 42.5 in.
Length-1988 mm / 78.3 in
Width-896 mm / 35.3 in
Weights & Capacities
Dry Weight149 kg / 328 lbs158.5 kg / 349.4 lbs
Fuel Capacity13.4 L / 3.5 US gal / 2.9 Imp gal11 Litres / 2.9 US gal
Wet Weight-158.5 kg / 349 lbs
Performance
Top Speed-143.0 km/h / 88.9 mph
Max Power43.5 hp / 32 kW @ 9500 rpm25 kW / 34 hp @ 9500 rpm
Max Torque3.6 kg-m / 35.3 Nm @7000rpm28 Nm / 20.7 ft-lb @ 7500 rpm
Power-to-Weight Ratio-0.2115 HP/kg
Engine
Fuel Control-Double Overhead Cams/Twin Cam (DOHC)
Engine Type-Single cylinder, four-stroke
CO2-77.3 CO2 g/km. (CO2 - Carbon dioxide emission)
Displacement373 cc / 22.7 cu-in313 cc / 19.1 cu in
Engine DetailFour stroke, single cylinder. DOHC with finger followers, 4 valvesSingle cylinder, DOHC, 4 valves
Fuel System-Injection
Bore x Stroke89 x 60 mm80 x 62 mm
Compression Ratio12.6:110.6:1
Cooling SystemLiquid CooledLiquid Cooled
Emissions-Euro 4
Exhaust valve diameter-27.2 mm
Fuel Consumption-3.33 litres/100 km (30.0 km/l or 70.64 mpg)
Fuel InductionBosch InjectionBMS-E2
IgnitionBosch EMS-
LubricationWet sump-
StarterElectricElectric
Valve Diameter (Intake)-33.5 mm
EV Specifics
Battery Capacity-12V, 8 Ah
Drivetrain
ClutchPASC antihopping clutch, mechanically operatedWet multi-plate
Final DriveChain 5/8 x 1/4" X RingChain, O-ring
Final Drive Ratio15:45-
Gear Ratios-1st 3.000 / 2 nd 2.063 / 3rd 1.588 / 4th 10286 / 5th 1.095 / 6th 0.955:1
Primary Drive Ratios30:803.083:1
Transmission / Drive6 Speed6-Speed, constant-mesh
Chassis
Frame TypeSteel trellis frame, powder coatedTubular steel frame in grid structure with bolt-on rear frame
Suspension - FrontWP inverted fork ø 43 mm41mm Telescopic fork
Suspension - RearWP monoshockAluminium swinging arm in conjunction with a directly mounted spring strut
Steering Head Angle66° 64.9°
Trail-102.3 mm / 4.02 in
Wheel Travel - Front142 mm / 5.6 in140 mm / 5.5 in
Wheel Travel - Rear150 mm / 5.9 in131 mm / 5.5 in
Electrical Systems
Alternator-330W
Wheels & Brakes
Brakes - FrontSingle 320 mm disc, 4 piston radial caliperSingle 300mm disc
Brakes - RearSingle 230 mm disc 1 piston caliperSingle 240mm disc
ABSBosch 9MB two-channel ABSStandard
Rims - Front-3.0 x 17
Rims - Rear-4.0 x 17
Tyres - Front110/70 -17110/70 R17
Tyres - Rear150/60-17150/60 R17
Wheels-5-Spoke, light alloy die-cast

Verdict

Winner on specs

2018 KTM 390 Duke

The 2018 KTM 390 Duke edges out the 2020 BMW G 310R thanks to its fuel injection, 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

2018 KTM 390 Duke - Advantages

  • Fuel injection: Precise fuelling, better cold-start reliability, and lower maintenance requirements.
  • 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.

2020 BMW G 310R - Advantages

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

2018 KTM 390 Duke vs 2020 BMW G 310R - FAQs

What are the engine differences between the 2018 KTM 390 Duke and 2020 BMW G 310R?
The 2018 KTM 390 Duke uses Four stroke, single cylinder. DOHC with finger followers, 4 valves, while the 2020 BMW G 310R is powered by Single cylinder, four-stroke.
Which bike is better for shorter riders, the 2018 KTM 390 Duke or the 2020 BMW G 310R?
The 2020 BMW G 310R has the lower seat at 785 mm, making it more accessible. The 2018 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 2018 KTM 390 Duke or the 2020 BMW G 310R?
Both are strong choices. The 2018 KTM 390 Duke has the edge in fuel injection and higher rear wheel travel, while the 2020 BMW G 310R 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.