Junak B20 (1960-65) vs Suzuki GSX 400F Katana (1981) vs Suzuki RMX 250S (1996) vs Suzuki SV 1000N (2003-04)
Comparison technical specifications
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| Make: | Junak | Suzuki | Suzuki | Suzuki |
| Model: | B20 | GSX 400F Katana | RMX 250S | SV 1000N |
| Years: | 1960-65 | 1981 | 1996 | 2003-04 |
| 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 |
| 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 |
| Bore x Stroke: | 75 x 79 mm | 53 x 45.2 mm | 67 mm x 70.8 mm | 98 x 66 mm |
| Compression Ratio: | 7.0:1 | 10.2:1 | 9.9 - 9.2 - 8.1:1 | 11.3:1 |
| Ignition: | Magneto | Fully transistorised | Suzuki PEI | Digital transistorized |
| Starting: | Kick-start | Electric | Kick | Electric |
| Clutch: | Multi-plate clutch with cork inserts working in an oil bath | Wet, multiplate | Wet, cable operated | Wet, multiple discs, hydraulic operated |
| 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 |
| 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 |
| Transmission: | Four-speed constant-mesh | 6 Speed | 5 Speed constant mesh | 6 Speed |
| Final Drive: | Chain | Chain, DAIDO DID50UB, 104 links | Chain | Chain |
| 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 |
| 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 |
| Front Brakes: | Full hub width, of expander shoe type, hand operated | 2 x Discs | Single disc | 2 x 310 mm Discs, 4 piston calipers |
| Rear Brakes: | Full hub width, of expander shoe type, foot operated | Single disc | Single disc | Single 220 mm disc, 2 piston caliper |
| Front Tyre: | 19 in | 3.25-S19 4PR | 80/100 - R21 51M | 120/70-17 |
| Rear Tyre: | 12 in | 3.75-S18 4PR | 110/100 - R18 64M | 180/55-17 |
| 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 |
| Seat Height: | 755 mm / 29.7 in | 780 mm / 30.7 in | 955 mm / 37.6 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 |
| 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 |