Derbi GPR 125 Nude (2005-) vs Derbi GPR 125 (2011-) vs Sunbeam Model 8 (1924-31) vs Yamaha XJ6 (2009-10) vs KTM 690 Duke (2015)

Comparison technical specifications

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Make:	Derbi	Derbi	Sunbeam	Yamaha	KTM
Model:	GPR 125 Nude	GPR 125	Model 8	XJ6	690 Duke
Years:	2005-	2011-	1924-31	2009-10	2015
Engine:	Two stroke, single cylinder	Two stroke, single cylinder	Single cylinder, OHV	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Four stroke, single cylinder, SOHC, 4 valves
Capacity:	124.7 cc / 7.6 cu-in	124.7 cc / 7.6 cu-in	347 cc / 21.2 cu in	600 cc / 36.6 cu-in	690 cc / 42.1 cu in
Bore x Stroke:	56 x 50 mm	56 x 50 mm	70 x 90 mm	65.5 x 44.5 mm	102 x 84.5 mm
Cooling System:	Liquid cooled	Liquid cooled	Air cooled	Liquid cooled	Liquid Cooled
Induction:	28mm Mikuni	28mm Mikuni	AMAC carburettor	Group injection type fuel injection	Generation Keihin EMS with EPT (Electric Power Throttle)
Starting:	Electric	Electric	Kick	Electric	Electric
Transmission:	6 Speed	6 Speed	3-Speed	6 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain X-Ring 5/8 x 5/16"
Front Suspension:	Inverted fork. 120mm wheel travel	40mm Fourche USD hydraulic forks, 120mm wheel travel	Druid forks	43mm Telescopic fork, 130mm wheel travel	WP Upside-down forks, 4357 ROMA
Rear Suspension:	Monoshock 110mm wheel travel	Monoshock, 110mm wheel travel	Rigid, spring loaded saddle	Swingarm Link less type Monocross, 130mm wheel travel	WP monoshock, 4618 with Pro-lever deflector
Front Brakes:	Single 300mm disc 4 piston caliper	Single 300mm disc 4 piston caliper	Drum, internal expanding	2x 298 mm discs	Single 320 mm floating disc, radially screwed four-piston brake caliper
Rear Brakes:	Single 180mm disc 2 piston caliper	Single 180mm disc 2 piston caliper	Drum, internal expanding	Single 245 mm disc	Single 240 mm floating disc, single piston caliper