APRILIA RS 250 Chesterfield Replica BMW R 12
engine specs
Type
liquid-cooled, two-stroke, V-twinWater-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder
Displacement
249 cm31170 cm3
Bore X Stroke
2.2x2.0 in OR 56 mm4.0x2.9 in OR 102 mm
Compression Ratio
13.2:1-
Horsepower
70/11900 KW(hp)/RPM95/6500 KW(hp)/RPM
Torque
28/10750 lb-ft/RPM OR 38/10750 Nm/RPM81/6000 lb-ft/RPM OR 110/6000 Nm/RPM
Fuel System
Mikuni TM 34 SS-
transmission specs
Gearbox
6-speed, manual6-speed
Clutch
wet multi-disc, manual-
Final Drive
wet multi-disc, manualShaft
chassis specs
Frame
aluminiumTubular space frame in steel, engine self-supporting
Front Suspension
40mm upside-down telescopic forkUSD telescopic forks, 45 mm
Rear Suspension
adjustable monoshock with APSAluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable
Front Brake
dual 298mm discs, 4-piston calipersTwin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers
Rear Brake
single 220mm disc, 2-piston caliperSingle disc brake, 265 mm, 2-piston floating caliper
dimension specs
Overall Length
78 in OR 1981 mm86.6 in OR 2200 mm
Overall Width
27.2 in OR 691 mm32.7 in OR 831 mm
Seat Height
31.1 in OR 790 mm29.7 in OR 754 mm
Weight
310.9 lbs OR 141 kg500 lbs OR 227 kg
Fuel Capacity
4.4 gallons OR 16.7 L3.7 gallons OR 14.0 L
Wheelbase
53 in OR 1346 mm59.8 in OR 1519 mm
tyres specs
Front
120/60-17100/90-19
Rear
150/60-17150/80-16

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