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) vs Harley-Davidson Harley Davidson Softail Low Rider ST (2022)
Comparison technical specifications
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| Make: | Junak | Suzuki | Suzuki | Suzuki | Suzuki | Harley-Davidson |
| Model: | B20 | GSX 400F Katana | RMX 250S | SV 1000N | GSX-R 750 | Harley Davidson Softail Low Rider ST |
| Years: | 1960-65 | 1981 | 1996 | 2003-04 | 2017 | 2022 |
| 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. | Four stroke, V-Twin, Milwaukee-Eight 117, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 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. | 1923 cc / 117 cu-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 | 103.5 x 114.3 mm |
| Compression Ratio: | 7.0:1 | 10.2:1 | 9.9 - 9.2 - 8.1:1 | 11.3:1 | 12.5:1 | 10.2:1 |
| Ignition: | Magneto | Fully transistorised | Suzuki PEI | Digital transistorized | Digital DC-CDI | Single-fire, non-wasted, map-controlled spark ignition |
| Starting: | Kick-start | Electric | Kick | Electric | 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 | Mechanical, 10 plate wet, assist & conventional |
| 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 | 103 hp / 77 kW @ 4750 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 | 169 Nm / 125 lb-ft @ 3500 rpm |
| Transmission: | Four-speed constant-mesh | 6 Speed | 5 Speed constant mesh | 6 Speed | 6 Speed, constant mesh | 6 Speed |
| Final Drive: | Chain | Chain, DAIDO DID50UB, 104 links | Chain | Chain | Chain, RK525ROZ5Y, 116 links | Belt, 32/66 ratio |
| 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 | Single cartridge 43 mm inverted with aluminum fork triple clamps; triple rate spring |
| 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 | Hidden, free piston, coil-over monoshock; 56 mm stroke; hydraulic preload adjustment |
| 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 | 2 x 300mm discs, 4 piston caliper |
| 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 | Single 292mm disc, 2 piston floating caliper |
| Front Tyre: | 19 in | 3.25-S19 4PR | 80/100 - R21 51M | 120/70-17 | 120/70 ZR17 | 110/90B19,62H,BW |
| Rear Tyre: | 12 in | 3.75-S18 4PR | 110/100 - R18 64M | 180/55-17 | 180/55 ZR17 | 180/70B16,77H,BW |
| 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. | Length 2365 mm / 93.1 in Width 870 mm / 34.3 in Height 1300 mm / 51.2 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. | Laden 686 mm / 27 in Unladen 720 mm / 28.3 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 | 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 | 17 Litres / 4.5 US gal / 3.7 Imp gal | 18.9 Litres / 5 US gal |