The Moto Ref

KTM 1390 Super Duke R vs Suzuki GSX-8S

Two naked bikes scored on the same 100-point system: specs side by side, points per category and a verdict that commits. These two sit in different classes, so each score is computed within its own class.

KTM

1390 Super Duke R

63.0

/ 100

Winner

vs

Suzuki

GSX-8S

40.8

/ 100

0 to 100 km/h

Estimated from power to weight, not a measured time.

0.00 s

KTM 1390 Super Duke R0 km/h- s
1390 Super Duke R
Suzuki GSX-8S0 km/h- s
GSX-8S

Points by category

Six categories, 100 points. How every point is calculated

Engine and performance

out of 25
1390 Super Duke R
20.0
GSX-8S
9.7

Handling and chassis

out of 20
1390 Super Duke R
12.5
GSX-8S
6.7

Value

out of 20
1390 Super Duke R
8.2
GSX-8S
2.9

Practicality

out of 15
1390 Super Duke R
6.8
GSX-8S
8.9

Technology

out of 10
1390 Super Duke R
9.5
GSX-8S
6.8

Reliability and ownership

out of 10
1390 Super Duke R
6.0
GSX-8S
5.8

Specs side by side

Full specification comparison: KTM 1390 Super Duke R versus Suzuki GSX-8S
SpecKTM1390 Super Duke RSuzukiGSX-8S
Engine
EngineLC8 75 degree V-twin, liquid cooled, DOHCParallel twin 270 degree, liquid cooled, DOHC
Displacement1350 cc776 cc
Power190 hp at 10,000 rpm82.9 hp at 8,500 rpm
Torque145 Nm at 8,000 rpm78 Nm at 6,800 rpm
Power to weight0.90 hp/kg0.41 hp/kg
Chassis
Wet weight212 kg202 kg
Front suspensionWP APEX 48 mm split function, 125 mmKYB 41 mm inverted, 130 mm
Front adjustabilityFully adjustableNon-adjustable
Rear suspensionWP APEX monoshock, 140 mmKYB monoshock, 130 mm
Rear adjustabilityFully adjustablePreload only
Front brake320 mm, monobloc 4-piston310 mm, radial 4-piston
ABSCornering ABSStandard ABS
Dimensions
Seat height834 mm810 mm
Wheelbase1497 mm1465 mm
Fuel capacity17.5 L14 L
Claimed consumption5.9 L/100 km4.2 L/100 km
Fuel range297 km333 km
Ownership
Price€21,999€8,990
Service interval15,000 km6,000 km
Valve check30,000 km24,000 km
Warranty2 years2 years
Equipment
DashTFTTFT
Ride modesYesYes
Traction controlYesYes
QuickshifterStandardStandard
Cruise controlOptionalNot available
ConnectivityYesNo

Verdict

The KTM 1390 Super Duke R wins this comparison comfortably, 63 points to 40.8.

The gap of 22.2 points is built mostly in engine and performance, where the 1390 Super Duke R takes 10.3 points out of the GSX-8S. Scores are computed within each bike's class from published spec data; the full formula is on the methodology page.

On the road the 1390 Super Duke R is the quicker machine: 190 hp and 145 Nm moving 212 kg, against 82.9 hp and 78 Nm moving 202 kg for the GSX-8S. That is 0.90 hp per kilo playing 0.41.

The GSX-8S costs €8,990, which leaves €13,009 in your pocket against the 1390 Super Duke R at €21,999. Service intervals run 6,000 km on the GSX-8S and 15,000 km on the 1390 Super Duke R.

Better for city and commuting

KTM 1390 Super Duke R

A 834 mm seat, 297 km of tank range and the stronger practicality and value scores make it the easier bike to live with daily.

Better for weekend twisties

KTM 1390 Super Duke R

190 hp pushing 212 kg with WP APEX 48 mm split function up front. It takes the combined engine and handling points.

Better for longer trips

KTM 1390 Super Duke R

297 km between fuel stops and the better equipment score. Distance rewards range and rider aids, and it has more of both.

Frequently asked

Which is faster, the KTM 1390 Super Duke R or the Suzuki GSX-8S?
The KTM 1390 Super Duke R. It carries 0.90 hp per kilo (190 hp, 212 kg wet) against 0.41 hp per kilo for the Suzuki GSX-8S (82.9 hp, 202 kg).
Is the KTM 1390 Super Duke R cheaper than the Suzuki GSX-8S?
The Suzuki GSX-8S is cheaper at €8,990 list, €13,009 less than the KTM 1390 Super Duke R at €21,999.
Which is better for shorter riders?
The Suzuki GSX-8S. Its 810 mm seat is 24 mm lower than the KTM 1390 Super Duke R, and at 202 kg it is the easier bike to manage at a stop.
Which has better technology, the 1390 Super Duke R or the GSX-8S?
The KTM 1390 Super Duke R, which scores 9.5 of 10 tech points with cornering ABS, a TFT dash, traction control, a standard quickshifter and phone connectivity. The Suzuki GSX-8S counters with a TFT dash, traction control and a standard quickshifter.
Which goes further on a tank?
The Suzuki GSX-8S: 333 km from its 14 litre tank at the claimed consumption, against 297 km for the KTM 1390 Super Duke R.
Which bike wins overall?
The KTM 1390 Super Duke R, scoring 63 of 100 against 40.8 on our within-class points system. The full breakdown and formula are public on the methodology page.

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