Yamaha IT 175 (1980) vs BMW K75S (1987-89)
Comparison technical specifications
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| Make: | Yamaha | BMW |
| Model: | IT 175 | K75S |
| Years: | 1980 | 1987-89 |
| Engine: | Two stroke, single cylinder, reed-valve inducted | Four-stroke, horizontal three cylinder in-line, DOHC, 2 valves per cylinder |
| Capacity: | 171 cc / 10.4 cu-in | 740 cc / 45 cub-in |
| Bore x Stroke: | 66 x 50mm | 67 x 70 mm |
| Compression Ratio: | 7.9:1 | 11.0:1 |
| Induction: | 32mm Mikuni carburetor | Electronic injection, Bosch LE-Jetronic |
| Starting: | Kick | Electric |
| Max Power: | 19.86 hp / 14.6 kW @ 8000 rpm | 55 kW / 75 hp @ 8500 rpm |
| Max Torque: | 18.47 Nm / 13.63 lb-ft @ 7500 rpm | 68 Nm / 50 ft lb @ 6750 rpm |
| Clutch: | Wet, multi-disc | Single dry plate |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Shaft |
| Frame: | Single-downtube, full cradle, chromoly frame, box section aluminum swingarm | Double-downtube frame with engine as a stressed member; box-section aluminum monolever swing arm |
| Front Suspension: | Telescopic forks | Telescopic fork with hydraulic shock absorber |
| Front Wheel Travel: | 244 mm / 9.6 in | 185mm / 7.3 in |
| Rear Suspension: | Monoshock with adjustable damping and pre-load | Monolever swinging arm |
| Rear Wheel Travel: | 241 mm / 9.4 in | 114mm / 4.5 in |
| Front Brakes: | Drum | 2 x 285mm discs, 2 piston calipers |
| Rear Brakes: | Drum | Single 285mm disc |
| Front Tyre: | 3.00 x 21 | 100/90-18 |
| Rear Tyre: | 4.10 x 18 | 130/90-17 |
| Seat Height: | 899 mm / 35.4 in | 810 mm / 31.9 in or 760 mm / 29.9 in. for low seat model |
| Ground Clearance: | 290 mm / 11.4 in | 175 mm / 6.9 in |
| Wet Weight: | 104.1 kg / 229.5 lbs | 235 kg / 518 lbs |
| Fuel Capacity: | 11 Litres / 2.9 US gal | 21 Litres / 5.54 US gal |