Yamaha TT-R 225 (2001-02) vs Yamaha FZR750R Genesis (1987) vs Yamaha RD 250R / RZ 250R (1984-85) vs Yamaha SRX 250 (1987-90)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | TT-R 225 | FZR750R Genesis | RD 250R / RZ 250R | SRX 250 |
| Years: | 2001-02 | 1987 | 1984-85 | 1987-90 |
| Engine: | Four stroke, single cylinder, SOHC, 2 valve | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. | Two stroke, parallel twin | Four stroke, single cylinder, DOHC, 4 valves |
| Capacity: | 223 cc / 13.6 cu-in | 749 cc / 45.7 cu-in | 247 cc / 15.0 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 70 x 58 mm | 68 x 51.6 mm | 54 х 54 mm | 73 х 59.6 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 9.5: | 11.2:1 | 6.2 :1 | 10.0:1 |
| Induction: | 26mm Teikei carburetor | 4x 34mm Mikuni carburator | 2x Mikuni VM28 SC carburetor | Y22PV Teikei carburetor |
| Ignition: | CDI | Electronic triggered | CDI | TCI |
| Starting: | Electric | Electric | Kick | Electric |
| Max Power: | NA | 106 hp / 77.4 kW @ 10500 rpm | 35.5 hp / 26.1 kW @ 8500 rpm　 | 32 hp / 23.8 kW @ 10000 rpm |
| Max Torque: | NA | 7.2 kgf-m / 72 Nm @ 8250 rpm | 30.2 Nm / 3.1 kgf-m@ 8000 rpm | 2.4 kgf-m / 17.3 lb-ft @ 8500 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | 41mm Kayaba forks 130mm wheel travel adjustable for spring preload and rebound damping, | Telescopic forks | Centre axle 33mm forks |
| Rear Suspension: | Link Type single shock | Monoshock single Kayaba damper 30mm wheel travel adjustable for spring preload and rebound damping, | Monocross | Single shock, adjustable spring preload |
| Front Brakes: | Single 229mm disc | 2x 320mm disc 2 piston caliper | Single 267mm disc | Single disc 2 piston caliper |
| Rear Brakes: | Drum | Single 267mm disc 2 piston caliper | Drum | Drum |
| Front Tyre: | 80/100-21 | 120/70 VR17 | 3.00-18 | 90/90-16 |
| Rear Tyre: | 100/100-18 | 160/60 VR18 | 3.50-18 | 100/90-18 |
| Dry Weight: | NA | 213 kg / 469.5 lbs | 139 kg / 306.4 lbs | 123 kg / 371 lbs |
| Fuel Capacity: | 10.2 Litres / 2.7 US gal | 20 Litres / 5.2 gal | 16.5 Litres / 4.3 US gal | 9 Litres / 2.3 US gal |