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            General information         | 
    
  
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                            Model                    
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                                    Aprilia RS 125                         | 
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                            Year model                    
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                                    1999                         | 
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                            Type                    
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                                    Sport                         | 
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                            Rating                    
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                     3.6   Check out the detailed rating of racing track capabilities, engine performance, accident risk, etc. Compare with any other bike.             | 
    
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            Engine and transmission         | 
    
  
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                            Engine size                    
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                                    124.8 ccm (7.62 cubic inches)                         | 
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                            Type of engine                    
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                                    Single cylinder, two-stroke                         | 
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                            Engine details                    
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                                    Rotax 122: Aluminium cylinder with Nikasil coated liner. Reed valve intake.                         | 
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                            Effect                    
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                                    29.5 HP (21.5  kW)) @ 11250 RPM                         | 
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                            Torque                    
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                                    20.0 Nm (2.0 kgf-m or 14.8 ft.lbs) @ 10000 RPM                         | 
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                            Top speed                    
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                                    160.0 km/h (99.4 mph)                         | 
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                            Compression                    
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                                    12.5:1                         | 
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                            Bore x stroke                    
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                                    54.0 x 54.5 mm (2.1 x 2.1 inches)                         | 
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                            Fuel system                    
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                                    Carburettor. Dell Orto PHBH 28 BD                         | 
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                            Fuel control                    
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                                    Membrane & power valve                         | 
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                            Ignition                    
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                                    Nippondenso CDI 071000-0910 QCA91                         | 
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                            Lubrication system                    
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                                    Separate mixing with variable displacement, volumetric pump.                         | 
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                            Cooling system                    
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                                    Liquid                         | 
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                            Gearbox                    
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                                    6-speed                         | 
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                            Transmission type                    
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                                    Chain  (final drive)                         | 
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                            Clutch                    
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                                    Multi plate in oil bath.                         | 
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                            Driveline                    
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                                    Primary drive: Gearbox: 63/19 (3.32). Final drive: Chain: 17/40 (2.35)                         | 
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                            Fuel consumption                    
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                                    5.20 litres/100 km (19.2 km/l or 45.23 mpg)                         | 
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                            Greenhouse gases                    
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                                    120.6 CO2 g/km. (CO2 - Carbon dioxide emission)                          | 
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                            Emission details                    
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                                    ECE R40-01                         | 
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                            Exhaust system                    
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                                    MP01- e11 - 0039                         | 
    
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            Chassis, suspension, brakes and wheels         | 
    
  
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                            Frame type                    
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                                    Sloping twin-spar frame in thin wall box section cast aluminium, with reinforcement cross-ribbing.                         | 
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                            Front suspension                    
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                                    Upside down hydraulic fork, 40 mm                         | 
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                            Front wheel travel                    
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                                    120 mm (4.7 inches)                         | 
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                            Rear suspension                    
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                                    Swingarm with asymmetric members in thin wall box section cast aluminium. Hydraulic monoshock with adjustable spring preload.                         | 
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                            Rear wheel travel                    
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                                    120 mm (4.7 inches)                         | 
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                            Front tire                    
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                                    110/70-R17                          | 
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                            Rear tire                    
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                                    150/60-R17                          | 
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                            Front brakes                    
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                                    Single disc. Axial caliper, 4 pistons                         | 
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                            Diameter                    
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                                    320 mm (12.6 inches)                         | 
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                            Rear brakes                    
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                                    Single disc. 2-piston caliper                         | 
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                            Diameter                    
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                                    220 mm (8.7 inches)                         | 
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                            Wheels                    
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                                    Aluminium alloy. Front 3.00 x 17, rear 4,00 x 17.                         | 
    
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            Physical measures and capacities         | 
    
  
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                            Weight incl. oil, gas, etc                    
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                                    139.0 kg (306.4 pounds)                         | 
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                            Front percentage of weight                    
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                                    49.3                         | 
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                            Seat height                    
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                                    805 mm (31.7 inches) If adjustable, lowest setting.                         | 
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                            Overall height                    
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                                    1135 mm (44.7 inches)                         | 
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                            Overall length                    
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                                    1950 mm (76.8 inches)                         | 
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                            Overall width                    
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                                    720 mm (28.3 inches)                         | 
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                            Ground clearance                    
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                                    163 mm (6.4 inches)                         | 
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                            Wheelbase                    
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                                    1345 mm (53.0 inches)                         | 
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                            Fuel capacity                    
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                                    14.00 litres (3.70 US gallons)                         | 
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                            Reserve fuel capacity                    
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                                    3.50 litres (0.92 US gallons)                         | 
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                            Oil capacity                    
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                                    0.60 litres (0.63 US quarts)                         | 
    
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            Other specifications         | 
    
  
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                            Color options                    
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                                    Black/Red, Fume Blue/Fluo Red                         | 
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                            Starter                    
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                                    Electric                         | 
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                            Comments                    
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                                    Type MPB0. Alternative front tires: 110/80R17, 100/80R17, 100/80-17. Alternative rear tires: 140/60R17, 130/70R17, 130/70-17.                         | 
| Update specs | Report missing specs or required updates. | 
    
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            Further information         | 
    
  | Insurance costs | Compare US insurance quotes from the nation's top providers. | 
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. | 
| Ask questions | Join the 99 Aprilia RS 125 discussion group or the general Aprilia discussion group. | 
| Related bikes | List related bikes for comparison of specs. | 
    
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