YAMAHA WR250X | BMW R 12 |
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engine specs | |
Type | |
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Liquid-cooled DOHC 4-stroke 4 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 | |
250 cm3 | 1170 cm3 |
Bore X Stroke | |
3.0x2.1 in OR 76 mm | 4.0x2.9 in OR 102 mm |
Compression Ratio | |
11.8:1 | - |
Horsepower | |
30/10000 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
Torque | |
18/8000 lb-ft/RPM OR 24/8000 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
Fuel System | |
Fuel injection | - |
transmission specs | |
Gearbox | |
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Constant Mesh, 6-speed | 6-speed |
Clutch | |
Multiplate wet clutch | - |
Final Drive | |
Chain | Shaft |
chassis specs | |
Frame | |
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Semi double cradle, aluminium | Tubular space frame in steel, engine self-supporting |
Front Suspension | |
Upside-down telescopic fork | USD telescopic forks, 45 mm |
Rear Suspension | |
Swingarm, (link suspension) | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
Front Brake | |
Single Disc, 298 mm | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
Rear Brake | |
Single Disc, 230 mm | Single disc brake, 265 mm, 2-piston floating caliper |
dimension specs | |
Overall Length | |
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83.3 in OR 2116 mm | 86.6 in OR 2200 mm |
Overall Width | |
31.9 in OR 810 mm | 32.7 in OR 831 mm |
Seat Height | |
35.2 in OR 894 mm | 29.7 in OR 754 mm |
Ground Clearance | |
10.4 in OR 264 mm | - |
Weight | |
300 lbs OR 136 kg | 500 lbs OR 227 kg |
Fuel Capacity | |
2 gallons OR 7.6 L | 3.7 gallons OR 14.0 L |
Wheelbase | |
56.1 in OR 1425 mm | 59.8 in OR 1519 mm |
tyres specs | |
Front | |
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110/70R17M/C 54H | 100/90-19 |
Rear | |
130/90R17M/C 54H | 150/80-16 |