YAMAHA Road Star | BMW R 12 |
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engine specs | |
Type | |
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Air-cooled, OHV, 8-valve, 48°,V-twin | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
Displacement | |
1670 cm3 | 1170 cm3 |
Bore X Stroke | |
3.8x4.4 in OR 97 mm | 4.0x2.9 in OR 102 mm |
Compression Ratio | |
8.4:1 | - |
Horsepower | |
75/4750 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
Torque | |
83/3500 lb-ft/RPM OR 113/3500 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
Fuel System | |
40mm throttle body FI | - |
transmission specs | |
Gearbox | |
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5 speed, manual, wide ratio | 6-speed |
Clutch | |
Wet multi-disc, manual | - |
Final Drive | |
Belt | Shaft |
chassis specs | |
Frame | |
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Steel | Tubular space frame in steel, engine self-supporting |
Front Suspension | |
43mm fork 5.5-in travel | USD telescopic forks, 45 mm |
Rear Suspension | |
Single shock 4.3-in travel | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
Front Brake | |
Dual 298mm discs | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
Rear Brake | |
320mm disc | Single disc brake, 265 mm, 2-piston floating caliper |
dimension specs | |
Overall Length | |
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98.4 in OR 2499 mm | 86.6 in OR 2200 mm |
Overall Width | |
38.6 in OR 980 mm | 32.7 in OR 831 mm |
Seat Height | |
28 in OR 711 mm | 29.7 in OR 754 mm |
Ground Clearance | |
5.7 in OR 145 mm | - |
Weight | |
743 lbs OR 337 kg | 500 lbs OR 227 kg |
Fuel Capacity | |
4.75 gallons OR 18.0 L | 3.7 gallons OR 14.0 L |
Wheelbase | |
66.5 in OR 1689 mm | 59.8 in OR 1519 mm |
tyres specs | |
Front | |
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130/90-16 | 100/90-19 |
Rear | |
150/80-16 | 150/80-16 |