Yamaha RD 250 (1976) vs Yamaha GTS1000 / ABS (1995-96) vs Yamaha WR 250F (2001-02) vs Suzuki GSX-R 750 K5 (2005) vs Yamaha YZF 1000 R1 (2015) vs Yamaha TDR 125R (2001-02)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Suzuki | Yamaha | Yamaha |
| Model: | RD 250 | GTS1000 / ABS | WR 250F | GSX-R 750 K5 | YZF 1000 R1 | TDR 125R |
| Years: | 1976 | 1995-96 | 2001-02 | 2005 | 2015 | 2001-02 |
| Engine: | Two stroke, torque induction, parallel twin | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. | Four stroke, single cylinder, DOHC, 5 valve | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stroke, single cylinder |
| Capacity: | 247 cc / 15.0 cu-in | 1002 cc / 61.2 cu-in | 249 cc / 15.2 cu-in | 749 c / 45.7 cub. in. | 998 cc / 60.9 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 54 х 54 mm | 75.5 X 56 mm | 77 x 53.6 mm | 72 x 46 mm | 79.0 x 50.9 mm | 56 x 50.7 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled, | Liquid cooled | Liquid cooled | Liquid cooled |
| Compression Ratio: | 6.7:1 | 10.8:1 | 12.5:1 | 12.3:1 | 13.0:1 | 6.8:1 |
| Induction: | 2x Mikuni VM28 SC carburetor | Electronic fuel infection. | Keihin FCR-MX37 flat-slide w/throttle position sensor) | Fuel injection, 46 mm throttle bodies | Fuel Injection with YCC-T and YCC-I | 28mm Dell'Orto carburetor |
| Ignition: | Battery and coil with breaker points | Digital | Digital CDI | Digital DC-CDI | TCI: Transistor Controlled Ignition | Electronic |
| Starting: | Kick | Electric | Electric & Kick | Electric | Electric | Electric |
| Transmission: | 6 Speed | 5 Speed | 5 Speed | 6 Speed, constant mesh | 6-speed w/multiplate slipper clutch | 6 Speed |
| Final Drive: | Chain | Chain | Chain | #525 Chain, O-ring sealed, 108 links | "O" ring chain | Chain |
| Front Suspension: | Telescopic forks | Single sided swingarm variable preload, compression and rebound damping | 48mm Fully adjustable inverted forks | Inverted Showa cartridge-type front fork with 43mm inner tubes and fully adjustable damping and spring preload | 43mm KYB® inverted fork; fully adjustable | 41mm Telescopic forks |
| Rear Suspension: | Dual shocks | Monocross variable preload, compression and rebound damping | Fully adjustable link Monocross | Showa Link-type, gas/oil damped, fully adjustable spring preload and compression damping, 4-way adjustable rebound damping | KYB® Single shock w/piggyback reservoir, 4-way adjustable | Monoshock adjustable preload |
| Front Brakes: | Single disc | Single 330mm disc 6 piston caliper with ABS | Single 250mm disc 2 piston caliper | 2 x 300 mm Discs, Tokico 4 piston calipers | 2x 320mm discs 4 piston calipers, UBS ABS | Single 320mm disc 2 piston caliper |
| Rear Brakes: | Drum | Single 282mm disc 2 piston caliper | Single 240mm disc 1 piston caliper | Single 220 mm disc, Tokico 2 piston caliper | Single 220mm disc 1 piston caliper, UBS ABS | Single 210mm disc 1 piston caliper |
| Front Tyre: | 3.00S-18-4PR | 130/60 ZR17 | 80/100-21 | 120/70 ZR17 | 120/70 ZR17 | 100/80-17 |
| Rear Tyre: | 3.50S-18-4PR | 170/60 ZR17 | 100/100-18 | 180/55 ZR17 | 190/55 ZR17 | 130/70-17 |
| Wheelbase: | 1325 mm / 52.1 in | 1495 mm / 58.9 in | 1475 mm / 58.1 in | 1396 mm / 55 in. | 1419 mm / 55.9 in | 1405 mm / 55.3 in |
| Fuel Capacity: | 16.5 Liters / 4.2 US gal | 20 Litres / 5.28 gal | 8 Liters / 2.1 US gal | 17 Litres / 4.5 US gal / 3.7 Imp gal | 17 Liters / 4.5 gal | 11 Litres / 2.9 US gal |