Junak B20 (1960-65) vs Suzuki GSX 400F Katana (1981) vs Suzuki RMX 250S (1996) vs Suzuki SV 1000N (2003-04) vs Suzuki GSX-R 750 (2017)

Comparison technical specifications

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Make:	Junak	Suzuki	Suzuki	Suzuki	Suzuki
Model:	B20	GSX 400F Katana	RMX 250S	SV 1000N	GSX-R 750
Years:	1960-65	1981	1996	2003-04	2017
Engine:	Four stroke, single cylinder, OHV	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.	Two stroke, single cylinder	Four stroke, 90° V-twin, DOHC, 4 valves per cylinder	Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Capacity:	349 cc / 21.3 cub. in.	398 cc / 24.3 cu in	249 cc / 15.2 cu in	996 cc / 60.7 cu-in	749 c / 45.7 cub. in.
Bore x Stroke:	75 x 79 mm	53 x 45.2 mm	67 mm x 70.8 mm	98 x 66 mm	70 x 48.7 mm
Compression Ratio:	7.0:1	10.2:1	9.9 - 9.2 - 8.1:1	11.3:1	12.5:1
Ignition:	Magneto	Fully transistorised	Suzuki PEI	Digital transistorized	Digital DC-CDI
Starting:	Kick-start	Electric	Kick	Electric	Electric
Clutch:	Multi-plate clutch with cork inserts working in an oil bath	Wet, multiplate	Wet, cable operated	Wet, multiple discs, hydraulic operated	Wet, multiple discs
Max Power:	14 kW / 19 hp @ 6000 rpm	30.8 kW / 41.3 hp @ 10500 rpm	38 kW / 51 hp @ 9000 rpm	90.9 kW / 123.5 hp / @ 9000 rpm	110.3 kW / 148 hp @ 12800 rpm
Max Torque:	27.5 Nm / 2.8 kgf-m / 20.3 ft-lb @3800 rpm	30.2 Nm / 3.1 kgf-m / 22.3 lb-ft @ 8500 rpm	46.6 Nm / / 4.75 kgf-m / 34.4 lb-ft @ 7000 rpm	102 Nm / 10.4 kgf-m / 75.2 lb-ft @ 7200 rpm	86.3 Nm / 8.8 kgf-m / 64 ft-lb @ 11200 rpm
Transmission:	Four-speed constant-mesh	6 Speed	5 Speed constant mesh	6 Speed	6 Speed, constant mesh
Final Drive:	Chain	Chain, DAIDO DID50UB, 104 links	Chain	Chain	Chain, RK525ROZ5Y, 116 links
Front Suspension:	Fork with coil springs telescopic shock absorbers	Telescopic fork, oil dampened	Inverted telescopic, pneumatic/coil spring, oil dampened, 21 way compression dampening, 21 way rebound dampening	46 mm Telescopic fork, cartridge-type, adjustable preload, compression and rebound damping	Showa inverted 41 mm cartridge front forks fully adjustable for high and low speed compression, spring preload, and rebound damping
Rear Suspension:	Independent rear wheel suspension on single wishbone , cooperating with 7- leaf spring positioned transversely;	Swingarm, dual shocks, oil dampened, spring 5-way adjustable	Link-type, spring preload fully adjustable, 18 way compression dampening, 21 way rebound dampening	Link-type, 7-way preload, compression and rebound damping adjustable	Showa 41mm aluminum alloy rear shock with a 16mm rod diameter are fully adjustable for high and low speed compression, spring preload and rebound damping
Front Brakes:	Full hub width, of expander shoe type, hand operated	2 x Discs	Single disc	2 x 310 mm Discs, 4 piston calipers	2 x 310 mm Discs, radial-mount opposed-four-piston Brembo 4 piston monoblock calipers
Rear Brakes:	Full hub width, of expander shoe type, foot operated	Single disc	Single disc	Single 220 mm disc, 2 piston caliper	Single 220 mm disc, Nissin single piston caliper
Front Tyre:	19 in	3.25-S19 4PR	80/100 - R21 51M	120/70-17	120/70 ZR17
Rear Tyre:	12 in	3.75-S18 4PR	110/100 - R18 64M	180/55-17	180/55 ZR17
Dimensions:	Length: 3055 mm / 120.3 in Width: 1420 mm / 55.9 in	Length: 2105 mm / 82.9 in Width: 750 mm / 29.5 in Height: 1135 mm / 44.7 in	Length: 2185 mm / 86.0 in Width: 895 mm / 35.2 in Height 1255 mm - 49.4 in	Length 2085 mm / 82.0 in Width 745 mm / 29.3 in Height 1170 mm / 46.0 in	Length 2030 mm / 79.9 in. Width 710 mm / 28.0 in. Height 1125 mm / 44.6 in.
Seat Height:	755 mm / 29.7 in	780 mm / 30.7 in	955 mm / 37.6 in	810 mm / 31.8 in	810 mm / 31.8 in.
Ground Clearance:	170 mm / 6.7 in	165 mm / 6.5 in	360 mm / 14.2 in	150 mm / 5.9 in	130 mm / 5.1 in
Fuel Capacity:	17 l / 3.9 US gal	15 Litres / 4.0 US gal / 3.3 Imp gal	11 L / 2.9 US gal / 2.4 Imp gal	17 Litres / 4.5 US gal / 3.7 Imp gal	17 Litres / 4.5 US gal / 3.7 Imp gal