Suzuki RG 125 Gamma (1985) vs Suzuki GS 550E (1978-79) vs Yamaha TZR 250SP (1990)
Comparison technical specifications
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| Make: | Suzuki | Suzuki | Yamaha |
| Model: | RG 125 Gamma | GS 550E | TZR 250SP |
| Years: | 1985 | 1978-79 | 1990 |
| 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, |
| Capacity: | 124 cc / 7.6 cu-in | 549 cc / 33.5 cu in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 54 x 54 mm | 56 x 55.8 mm | 56.4 x 50 mm |
| Compression Ratio: | 7.4:1 | 8.6:1 | 5.9:1 |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Induction: | 28mm Mikuni carburetor | 4 x VM22SS Mikuni carburetors | 2x Mikuni TM28SS carburetor |
| Ignition: | CDI | Battery and Coil | CDI |
| Max Power: | 18.4 kW / 25 hp @ 9.500 rpm | 35.8 kW / 49 hp @ 9000 rpm | 50 hp / 36.4 kW @ 10000 rpm |
| Max Torque: | 19.1 Nm / 1,95 kg-m / 14.1 lb-ft @ 8500 rpm. | 42 Nm 4.3 kgf-m / 31 lb-ft @ 7500 rpm | 35.5 Nm / 26.2 lb-ft @ 9750 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | 30 mm Telescopic forks | Telescopic fork, oil damped | Telescopic fork adjustable preload |
| Rear Suspension: | Single shock linkage | Twin shocks, coil over, 5-way adjustable springload | Coil and gas spring preload 9-way preload position |
| Front Brakes: | Single 230 mm disc | Single 275mm disc, 1 piston caliper | Single 320mm discs 2 piston calipers |
| Rear Brakes: | 130 mm Drum | Drum | Single 210mm disc 1 piston caliper |
| Front Tyre: | 80/100 S16 | 3.25-19 | 100/80-17 |
| Rear Tyre: | 90/90 S18 | 3.75-18 | 120/80-17 |
| Dry Weight: | 96 kg / 209 lbs | 195 kg / 430 lbs | 128 kg / 282.1 lbs |
| Fuel Capacity: | 12 Litres / 3.2 US gal / 2.6 Imp gal | 17 Litres / 4.5 US gal / 3.7 Imp gal | 16 liters / 4.2 US gal |