Yamaha TZR 250 (1988) vs Ducati 175TS Turismo Speciale (1962-65) vs Ducati 998 S Bostrom Replica (2002)
Comparison technical specifications
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| Make: | Yamaha | Ducati | Ducati |
| Model: | TZR 250 | 175TS Turismo Speciale | 998 S Bostrom Replica |
| Years: | 1988 | 1962-65 | 2002 |
| Engine: | Two stroke, parallel twin cylinders, read valve, | Four stroke, single cylinder, SOHC, shaft and bevel gear driven, 2 valves per cylinder | Four stroke, 90° “L” twin cylinder, DOHC, desmodromic 4 valve per cylinder, belt driven |
| Capacity: | 249 cc / 15.2 cu-in | 174.5 cc / 10.6 cu in | 998 cc / 60.9 cu in |
| Bore x Stroke: | 56.4 x 50 mm | 62 x 57.8 mm | 100 x 63.5 mm |
| Cooling System: | Liquid cooled | Air cooled | Liquid cooled |
| Compression Ratio: | 5.9:1 | 7:1 | 11.4:1 |
| Induction: | 2x Mikuni TM28SS carburetor | Dell'Orto MB22B carburetor | Weber Marelli CPU 5.9M, 54mm throttle bodies, electronic fuel injection |
| Ignition: | CDI | 6V 40W generator, points and coil | Digital CDI |
| Starting: | Kick | Kick | Electric |
| Max Power: | 50 hp / 36.4 kW @ 10000 rpm | 8.2 kW / 11 hp @ 7500 rpm | 100 kW / 136 hp @ 10200 rpm |
| Transmission: | 6 speed | 4 Speed | 6 Speed |
| Final Drive: | Chain | 3.066:1 | Chain |
| Front Suspension: | Telescopic fork adjustable preload | Hydraulic telescopic fork, Ducati | Öhlins upside down fork with 43 mm of condition pipe diameter, TiN coating |
| Rear Suspension: | Coil and gas spring preload 9-way preload position | Swingarm, dual shocks, 3-way adjustable | A arm rocker with progressively working Öhlins central shock strut |
| Front Brakes: | Single 320mm discs 2 piston calipers | Drum, full aluminium, 158 mm | 2 x 320 mm Discs, 4 piston calipers |
| Rear Brakes: | Single 210mm disc 1 piston caliper | Drum, full aluminium, 136 mm | Single 220 mm disc, 2 piston caliper |
| Front Tyre: | 100/80-17 | 2.50 -18 | 120/70 ZR17 |
| Rear Tyre: | 120/80-17 | 2.75 -18 | 190/50 ZR17 |
| Dimensions: | Length 2005 mm / 78.9 in Width 660 mm / 25.9 in | Length: 1980 mm / 78.0 in Width: 680 mm / 26.8 in Height: 1040 mm / 40.9 in | Length 2030 mm / 79.9 in Width 780 mm / 30.7 in Height 1080 mm / 42.5 in |
| Wheelbase: | 1375 mm / 54.1 in | 1310 mm / 51.6 in | 1410 mm / 55.5 in |
| Seat Height: | 760 mm / 29.9in | 750 mm / 29.5 in | 790 mm / 31.1 in |
| Dry Weight: | 128 kg / 282.1 lbs | 98.5 kg / 108 lbs | 187 kg / 412 lbs |
| Fuel Capacity: | 16 liters / 4.2 US gal | 17 L / 4.5 US gal / 3.7 Imp gal | 17 Litres / 4.5 US gal / 3.7 Imp gal |