Kawasaki ZX-6R Ninja (1999) vs Yamaha YZF 750R (1995) vs Yamaha YDS-7 (1972) vs Ducati 350GTV (1977-81) vs Yamaha TDR 125R (2001-02) vs Yamaha RD 250 (1972) vs Suzuki RF 400R (1995-96)

Comparison technical specifications

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Make:	Kawasaki	Yamaha	Yamaha	Ducati	Yamaha	Yamaha	Suzuki
Model:	ZX-6R Ninja	YZF 750R	YDS-7	350GTV	TDR 125R	RD 250	RF 400R
Years:	1999	1995	1972	1977-81	2001-02	1972	1995-96
Engine:	Four stroke, transverse four cylinders, DOHC, 4 valve per cylinder	Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder.	Two stroke, piston-port, parallel twin	Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder.	Two stroke, single cylinder	Two stroke, torque induction, parallel twin	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity:	598cc / 36.5 cub in.	749 cc / 45.7 cu-in	247 cc / 15.0 cu-in	349.6 cc / 21.3 cu in	124 cc / 7.6 cu-in	247 cc / 15.0 cu-in	398 cc / 24.3 cu in
Bore x Stroke:	64 x 46.6 mm	72 x 46 mm	54 x 54 mm	71.8 x 43.2 mm	56 x 50.7 mm	54 х 54 mm	40.4 x 56 mm
Cooling System:	Liquid cooled	Liquid cooled	Air-cooled	Air cooled	Liquid cooled	Air cooled	Liquid cooled
Induction:	4 x 36mm Keihin CVKD36 carburetors	4x Mikuni BDST38 carbs	26mm Mikuni	2 x 26 mm Dell'Orto VHB 26 FS/FD	28mm Dell'Orto carburetor	2x Mikuni VM28 SC carburetor	Mikuni 32 mm carburetors
Starting:	Electric	Electric	Kick	Electric	Electric	Kick	Electric
Max Power:	76.5 kW / 105 hp @ 12500 rpm	125 hp / 91.1 kW @ 12000 rpm	30 hp @7500 rpm	17.5 kW / 24 hp @ 7500 rpm	15 hp / 10.9 kW @ 9500 rpm	30 hp / 22.3 kW @ 7500 rpm	42.3 kW / 58 hp @ 11000 rpm
Transmission:	6 Speed	6 Speed	5 Speed Helical-gear primary drive. Rear chain % x %in with top guard. Engine rpm at 30 mph in top gear, approximately 2,500.	5-Speed	6 Speed	6 Speed	6 Speed
Final Drive:	Chain	Chain	Chain	Chain	Chain	Chain	Chain
Wheelbase:	1466 mm / 57.7 in.	1,420 mm / 55.9 in	1300 mm / 51.1 in	1400 mm / 55.1 in	1405 mm / 55.3 in	1325 mm / 52.1 in	1430 mm / 56.3 in
Front Suspension:	41mm Showa telescopic forks.	41mm USD forks adjustable preload rebound and compression	34mm Telescopic forks	35 mm Paioli fork	41mm Telescopic forks	Telescopic forks	41mm Telescopic forks, preload adjustable.
Rear Suspension:	Showa sing shock, adjustable preload and rebounding preload.	Monocross adjustable preload rebound	Twin shock	Dual Marzocchi shocks, 3-way adjustable	Monoshock adjustable preload	Dual shocks	Link-type single shock, rebound and preload adjustable.
Front Brakes:	2 x 270mm discs, 4 piston calipers	2x 320mm discs 6 piston calipers	180mm twin leading shoe drum	2 x 256 mm Brembo discs	Single 320mm disc 2 piston caliper	Drum	2 x Discs, 4 piston caliper
Rear Brakes:	Single 130mm disc, 1 piston caliper	Single 245mm disc 2 piston caliper	180mm single leading shoe	Single 257mm Brembo disc	Single 210mm disc 1 piston caliper	Drum	Single disc, 2 piston caliper
Front Tyre:	120/60 ZR17	120/70 ZR17	300 x 18	3.25-18	100/80-17	3.00S-18-4PR	120/70-17
Rear Tyre:	160/60 ZR17	180/55 ZR17	3.25 x 18	3.50-18	130/70-17	3.50S-18-4PR	160/60-17
Fuel Capacity:	5.6 L/100 km / 18.2 Litres / 4.8 US gal	19 Litres / 4.3 gal	11.4 Litres / 3.0 gal	14 L / 3.7 US gal / 3.1 Imp gal	11 Litres / 2.9 US gal	16.5 Liters / 4.2 US gal	17 Litres / 4.5 US gal / 3.7 Imp gal