YAMAHA SR 400 | BMW R 12 |
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engine specs | |
Type | |
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Single cylinder, four-stroke,air-cooled | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
Displacement | |
399 cm3 | 1170 cm3 |
Bore X Stroke | |
3.4x2.5 in OR 86 mm | 4.0x2.9 in OR 102 mm |
Compression Ratio | |
8.5:1 | - |
Horsepower | |
23/6500 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
Torque | |
20/3000 lb-ft/RPM OR 27/3000 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
Fuel System | |
Injection | - |
transmission specs | |
Gearbox | |
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5-Speed | 6-speed |
Clutch | |
Wet multiplate | - |
Final Drive | |
Chain | Shaft |
chassis specs | |
Frame | |
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Steel Double Cradle | Tubular space frame in steel, engine self-supporting |
Front Suspension | |
Telescopic hydraulic fork 150mm | USD telescopic forks, 45 mm |
Rear Suspension | |
Dual shocks 125mm | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
Front Brake | |
Single disc 260mm | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
Rear Brake | |
Expanding brake 130mm | Single disc brake, 265 mm, 2-piston floating caliper |
dimension specs | |
Overall Length | |
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82.1 in OR 2085 mm | 86.6 in OR 2200 mm |
Overall Width | |
29.5 in OR 749 mm | 32.7 in OR 831 mm |
Seat Height | |
30.9 in OR 785 mm | 29.7 in OR 754 mm |
Ground Clearance | |
5.1 in OR 130 mm | - |
Weight | |
384 lbs OR 174 kg | 500 lbs OR 227 kg |
Fuel Capacity | |
3.2 gallons OR 12.1 L | 3.7 gallons OR 14.0 L |
Wheelbase | |
55.5 in OR 1410 mm | 59.8 in OR 1519 mm |
tyres specs | |
Front | |
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90/100-18 | 100/90-19 |
Rear | |
110/90-18 | 150/80-16 |