Yamaha DT 125R (1986-87) vs Yamaha FZ 600 (1986) vs Honda CB 250T Dream (1981-) vs Yamaha TX 500 Sport (1973-74) vs Honda CBR 125R (2018-19) vs Yamaha TT-R 250 (1999-00)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Honda | Yamaha | Honda | Yamaha |
| Model: | DT 125R | FZ 600 | CB 250T Dream | TX 500 Sport | CBR 125R | TT-R 250 |
| Years: | 1986-87 | 1986 | 1981- | 1973-74 | 2018-19 | 1999-00 |
| Engine: | Two stroke, single cylinder, reed-valve | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. | Air cooled, four stroke, twin cylinder, OHC, 2 valve per cylinder | Four stole, parallel twin cylinder. DOHC | Four stroke single cylinder, SOHC, 2 valve. | Four stroke, single cylinder, DOHC, 4-valve per cylinder. |
| Capacity: | 123 cc / 7.5 cu-in | 599 cc / 36.5 cu-in | 249 | 498 cc / 30.5 cu-in | 124.7 cc / 7.6 cu-in | 249 cc / 15.1 cu-in |
| Bore x Stroke: | 56 X 50 mm | 58.5 x 55.7 mm | 62 x 41.4mm | 73 х 59.6 mm | 58 x 47.2 mm | 73 x 59.6 mm |
| Compression Ratio: | 6.8:1 | 10.0:1 | I alternator. 3.0g petrol, 5ptoil. Telescopic/pf. Tyres, 3.60 x 19in (fr), 4.10 x 18in (r). 3801b. 90mph. | 9.0:1 | 11.0:1 | 10.3:1 |
| Induction: | VM24 carburetor | 4X BS30 Mikuni carburetors | 2x 38mm Mikuni carburetor | PGM-FI electronic fuel injection | TEIKEI Y30P carb | |
| Max Power: | 14 hp / 10.3 kW @ 6500 rpm | 54.6 hp / 39.8 kW @ 9400 rpm | 27 hp @ 110000rpm | 48 hp / 36.5 kW @ 8500 rpm | 13.6 hp / 10 kW @ 10000 rpm | 28 hp / 20.6 kW @ 8500 rpm |
| Max Torque: | 1.5 kgf-m / 15.2 Nm @ 6500 rpm | 44 Nm / 32.4 lb-ft @ 7500 rpm | 4.5 kgf-m / 32.5 lb-ft @ 6500 rpm | 10.6 Nm / 1.08 kg-m @ 8250 rpm | 2.8 kgf-m / 27.1 Nm / 20.0 lb-ft @ 7000 rpm | |
| Front Suspension: | Telescopic Forks | 36mm Kayaba forks air pressure | Telescopic | Telescopic fork. | 31mm telescopic fork, | Telescopic forks, Coil air spring oil damper |
| Rear Suspension: | Monocross | Showa single shock | Dual shocks | Dual shocks swing arm, preload adjustable! | Monoshock damper, | Monocross, Single shock, link-type, w/adjustable preload |
| Front Brakes: | Single 230mm disc | 2x 269mm discs 2 piston caliper | Single disc | Single 267mm disc | Single 276mm disc 2 piston caliper | Single 245mm disc |
| Rear Brakes: | Single 220mm disc | Single 240mm disc 1 piston caliper | Drum | Drum | Single 220mm disc 1 piston caliper | Single 220mm disc |
| Front Tyre: | 2.75-21 | 100/90-16 | 3.60 -19 | 3.25-19 | 100/80 –17 | 3.00-21 |
| Rear Tyre: | 4.10-18 | 120/80-18 | 4.10 -18 | 3.50-18 | 130/70 –17 | 4.60-18 |