Ducati 125 TS (1961-63) vs Ducati Ducat ST4 (1997-98) vs Suzuki RGV 250 (1990)
Comparison technical specifications
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| Make: | Ducati | Ducati | Suzuki |
| Model: | 125 TS | Ducat ST4 | RGV 250 |
| Years: | 1961-63 | 1997-98 | 1990 |
| Engine: | Four stroke, single-cylinder. OHC | Four stroke, 90° “L” twin cylinder, DOHC, desmodromic 4 valves per cylinder | Two stroke, 90° V- twin, reed valve |
| Capacity: | 125 cc / 7.6 cu-in | 916 cc / 55.9 cu in | 249 cc / 15.2 cu in |
| Bore x Stroke: | 55.2 x 52 mm | 94 x 66 mm | 56 x 50.6 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 8.0;1 | 11.0:1 | 7.5 :1 |
| Induction: | 22 mm Dell'orto carburetor | Fuel injection, 50 mm throttle body, Marelli 1.6M | 2 x Mikuni VM32SS semi-flat carburetors |
| Ignition: | Magnetic flywheel | Marelli electronic | Pointless Electrical Ignition |
| Starting: | Kick | Electric | Kick |
| Max Power: | 7.3 kW 10 hp @ 7000 rpm | 78.7 kW / 107 hp @ 9000 rpm | 35.7 kW / 49 hp @ 9500 rpm |
| Transmission: | 4 Speed | 6 Speed | 6 Speed, constant mesh |
| Final Drive: | Chain | Chain | Chain, DID520V2, 114 links |
| Frame: | Single cradle | Steel, Trellis frame | Twin spar, aluminium |
| Front Suspension: | Hydraulically damped telescopic forks | Showa GD081 43mm upside-down fully adjustable fork. | Telescopic fork, 5-way adjustable with anti-dive, oil dampened |
| Rear Suspension: | Dual chocks | Progressive linkage with fully adjustable Showa GD082 monoshock with piggy back aluminum swing arm. | Full Floater, mono-shock, gas/oil damped, 7-way adjustable |
| Front Brakes: | 158 Drum | 2x 320 mm Discs, 4 piston calipers | 2 x 290 mm Discs ,4 piston calipers |
| Rear Brakes: | 136 Drum | Single 245 mm disc, 2 piston caliper | Single 210 mm disc, 1 piston caliper |
| Front Tyre: | 2.75 -17 | 120/70 - ZR17 | 110/70-17 |
| Rear Tyre: | 2.50 -17 | 180/55 - ZR17 | 140/60-18 |
| Dry Weight: | 100.5 kg | 214.5 kg / 474 lbs | 128 kg / 282 lbs |
| Fuel Capacity: | 17 Litres | 21 Litres / 5.5 US gal / 4.6 Imp gal | 17 Litres / 4.5 US gal / 3.7 Imp gal |