Suzuki RG 125 Gamma (1985) vs Suzuki GS 550E (1978-79) vs Yamaha TZR 250SP (1990) vs Suzuki RV 200 VanVan (2017-18) vs Ducati 125 TV Testone (1962-68)
Comparison technical specifications
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| Make: | Suzuki | Suzuki | Yamaha | Suzuki | Ducati |
| Model: | RG 125 Gamma | GS 550E | TZR 250SP | RV 200 VanVan | 125 TV Testone |
| Years: | 1985 | 1978-79 | 1990 | 2017-18 | 1962-68 |
| Engine: | Two stroke, single cylinder, crankcase reed valve | Four stroke, transverse four cylinders, DOHC, 2 valves per cylinder. | Two stroke, parallel twin cylinders, read valve, | Single cylinder, four stroke, SOHC, 2 valves | Four stroke, single-cylinder, OHC, bevel gear driven |
| Capacity: | 124 cc / 7.6 cu-in | 549 cc / 33.5 cu in | 249 cc / 15.2 cu-in | 199 cc / 12.1 cu in | 124.4 cc / 7.6 cu in |
| Bore x Stroke: | 54 x 54 mm | 56 x 55.8 mm | 56.4 x 50 mm | 66 x 58.2 mm | 55.2 x 52 mm |
| Compression Ratio: | 7.4:1 | 8.6:1 | 5.9:1 | 9.4:1 | 7.0:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled | Air cooled | Air cooled |
| Induction: | 28mm Mikuni carburetor | 4 x VM22SS Mikuni carburetors | 2x Mikuni TM28SS carburetor | Fuel injection | Dell'Orto UB18BS or ME18BS carburetor |
| Ignition: | CDI | Battery and Coil | CDI | Electric | Battery and coil, 6V 40W generator |
| Transmission: | 6 Speed | 6 Speed | 6 speed | 5 Speed, constant mesh | 4 Speed |
| Final Drive: | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | 30 mm Telescopic forks | Telescopic fork, oil damped | Telescopic fork adjustable preload | Telescopic fork, coil spring, oil damped | Hydraulically damped telescopic forks, Marzocci |
| Rear Suspension: | Single shock linkage | Twin shocks, coil over, 5-way adjustable springload | Coil and gas spring preload 9-way preload position | Swingarm, mono shock, coil spring, oil damped | Swingarm, dual shocks, 3-way adjustable |
| Front Brakes: | Single 230 mm disc | Single 275mm disc, 1 piston caliper | Single 320mm discs 2 piston calipers | Single 220 mm disc, 2 piston calipeer | Drum, 123 mm |
| Rear Brakes: | 130 mm Drum | Drum | Single 210mm disc 1 piston caliper | Drum | Drum, 123 mm |
| Front Tyre: | 80/100 S16 | 3.25-19 | 100/80-17 | 130/80 -18M/C 66P, tube type | 2.75 - 16 |
| Rear Tyre: | 90/90 S18 | 3.75-18 | 120/80-17 | 180/80 -14M/C 78P, tube type | 2.75 - 16 |