Suzuki GR 650 Tempter (1985-89) vs Kawasaki ZX-6R (2007) vs Beta RS 500 (2015) vs Ducati 125 Six Days (1977-78) vs Kawasaki BJ 250 Estrella (2007-10) vs Triumph Street Triple 675 (2007)

Comparison technical specifications

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Make:	Suzuki	Kawasaki	Beta	Ducati	Kawasaki	Triumph
Model:	GR 650 Tempter	ZX-6R	RS 500	125 Six Days	BJ 250 Estrella	Street Triple 675
Years:	1985-89	2007	2015	1977-78	2007-10	2007
Engine:	Four stroke, parallel twin cylinders	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder	Four stroke, single cylinder, 4 valve	Two stroke, single cylinder, piston port	Four stroke, single cylinder, SOHV , 2 valves	Four stroke, in-line 3-cylinder, DOHC, 12 valve
Capacity:	651 cc / 39.7 cu in	599 cc / 36.6 cub in	478 cc / 29.2 cu in	123.7 cc / 7.5 cu in	249 cc / 15.2 cu-in	675 cc / 41.19 cu-in
Bore x Stroke:	77 x 70 mm	67 x 42.5 mm	100 x 60.8 mm	54 x 54 mm	66 X 63 mm	74 x 52.3 mm
Compression Ratio:	8.7:1	13.9:1	12.1:1	14.6:1	9.0:1	12.65:1
Cooling System:	Air cooled	Liquid cooled	Liquid cooled	Air cooled	Air cooled	Liquid-cooled
Induction:	2 x Mikuni carburetors	DFI® with four 38mm Keihin throttle bodies, oval sub-throttles, two injectors per throttle body	Keihin FCR-MX 39mm	Dell'Orto PHBE 32 carburetor	Carburetor	Multipoint sequential electronic fuel injection with forced air induction
Ignition:	Battery powered inductive	TCBI with Digital advance	DC-CDI with variable ignition timing, Kokusan.	Motoplat electronic	CDI	Digital - inductive type
Starting:	Electric	Electric	Electric & Kick	Kick	Electric	Electric
Transmission:	5 Speed	6 Speed	6 Speed	6-Speed	5 Speed	6 Speed
Final Drive:	Chain	X-ring chain	O-ring chain, DID	Chain	Chain	O ring chain
Front Suspension:	35mm Air assisted forks	41 mm inverted cartridge fork with top-out springs, stepless rebound damping, stepless compression damping, fully-adjustable spring preload	Sachs USD fork, Ø 48 mm, adjustable compression and rebound, TFX technology,	35mm Marzocchi with magnesium forks	Telescopic forks	41mm Kayaba telescopic upside down forks
Rear Suspension:	Single shock adjustable spring preload	Bottom-Link Uni-Trak® with gas-charged shock, top-out spring and pillow ball upper mount, dual-range (high/low-speed) stepless compression damping, 25-way Adjustable rebound damping, fully-adjustable spring preload	Aluminum Body Sachs shock w/adjustable rebound and hi/low speed compression	Swinging arm with dual Marzocchi shocks	Dual shocks	Kayaba monoshock, adjustable preload
Front Brakes:	Single 260mm disc, 1 piston caliper	2 x 300mm discs, 4 piston calipers	Single Ø 260 mm disc, 2 piston caliper	125 mm drum	Single 300mm disc	2 x 308 mm Discs, Nissin 2 piston sliding calipers
Rear Brakes:	Drum	Single 210mm disc, 1 piston caliper	Single Ø 240mm disc, 1 piston caliper	140 mm drum	Single 230mm disc	Single 220 mm disc, 1 piston caliper
Front Tyre:	100/90-19	120/65 ZR17	90/90 -21	3.00 x 21	90/90-18 51 P	120/70 ZR 17
Rear Tyre:	130/90-16	180/55 ZR17	140/80 -18	4.00 x 18	110/90-17 60 P	180/55 ZR 17
Wheelbase:	1430 mm / 56.3 in	1405 mm / 55.3 in.	1475 mm / 58.1 in	1430 mm / 56.2 in	1400 mm / 55.1 in	1410 mm / 55.5in
Seat Height:	775 mm / 30.5 in	820 mm / 32.3 in.	934.7 mm / 36.8 in	900 mm / 35.4 in	745 mm / 29.3 in - 775 mm / 30.5 in adjustable	800 mm / 31.5 in
Dry Weight:	181 kg / 399 lbs	167 kg / 368 lbs	111.5 kg / 246 lbs	98 kg / 216 lbs	142 kg / 313 lbs	167 kg / 368 lbs
Fuel Capacity:	12 Litres / 3.2 US gal / 2.6 Imp gal	17 Litres / 4.5 US gal	7.9 L / 2.1 US gal	8 Litres / 2.11 Us gal	14 Litres / 3.7 US gal	17.4 Litres / 4.6 US gal / 3.8 Imp gal