| YAMAHA YZ250F | BMW R 12 |
|---|
| engine specs | |
| Type | |
|---|---|
| liquid-cooled DOHC 4-stroke 5 titanium valves | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
| Displacement | |
| 249 cm3 | 1170 cm3 |
| Bore X Stroke | |
| 3.0x2.1 in OR 76 mm | 4.0x2.9 in OR 102 mm |
| Compression Ratio | |
| 13.5:1 | - |
| Horsepower | |
| - | 95/6500 KW(hp)/RPM |
| Torque | |
| 22/8500 lb-ft/RPM OR 30/8500 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
| Fuel System | |
| Keihin FCR MX37, flat-slide w/throttle position sensor | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5 speed, manual | 6-speed |
| Clutch | |
| Wet multi-disc, manual | - |
| Final Drive | |
| Chain | Shaft |
| chassis specs | |
| Frame | |
|---|---|
| Aluminium semi-double-cradle | Tubular space frame in steel, engine self-supporting |
| Front Suspension | |
| Fully adjustable 48 mm inverted fork 300 mm (11.8 in.) travel, Speed-Sensitive System | USD telescopic forks, 45 mm |
| Rear Suspension | |
| Fully adjustable link monocross 307 mm (12.1 in.) travel | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
| Front Brake | |
| 250mm floating disc | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
| Rear Brake | |
| 245mm disc | Single disc brake, 265 mm, 2-piston floating caliper |
| dimension specs | |
| Overall Length | |
|---|---|
| 85.1 in OR 2162 mm | 86.6 in OR 2200 mm |
| Overall Width | |
| 32.5 in OR 826 mm | 32.7 in OR 831 mm |
| Seat Height | |
| 38.8 in OR 986 mm | 29.7 in OR 754 mm |
| Ground Clearance | |
| 14.6 in OR 371 mm | - |
| Weight | |
| 226 lbs OR 103 kg | 500 lbs OR 227 kg |
| Fuel Capacity | |
| 1.8 gallons OR 6.8 L | 3.7 gallons OR 14.0 L |
| Wheelbase | |
| 57.8 in OR 1468 mm | 59.8 in OR 1519 mm |
| tyres specs | |
| Front | |
|---|---|
| 80/100-21 | 100/90-19 |
| Rear | |
| 100/90-19 | 150/80-16 |
