2011 APRILIA RS4 125
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The Aprilia RS4 125 is the natural successor and most advanced evolution to date of the Aprilia RS 125, the bike that has dominated the 125 cc sports class for years, which set the benchmark for the one-eighth litre sports segment and which is still today the most highly sought after machine among riders competing in the Sport Production category.
Specifications
Model: Aprilia RS4 125
Year: 2011
Category: Sport
Engine and transmission
Displacement: 124.80 ccm (7.62 cubic inches)
Engine type: Single cylinder, four-stroke
Power: 16.04 HP (11.7 kW))
Compression: 12.5:1
Bore x stroke: 58.0 x 47.0 mm (2.3 x 1.9 inches)
Valves per cylinder: 4
Fuel system: Injection
Fuel control: DOHC
Ignition: CDI
Lubrication system: Wet sump
Cooling system: Liquid
Gearbox: 6-speed
Transmission type,
final drive: Chain
Clutch: Multi-plate in oil bath.
Driveline: Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35).
Chassis, suspension, brakes and wheels
Frame type: aluminium, Single cradle frame
Front suspension: Upside down hydraulic fork, 40 mm.
Front suspension travel: 110 mm (4.3 inches)
Rear suspension: Swingarm. Hydraulic monoshock with adjustable spring preload.
Rear suspension travel: 130 mm (5.1 inches)
Front tyre dimensions: 110/80-R17
Rear tyre dimensions: 130/70-R17
Front brakes: Single disc
Front brakes diameter: 300 mm (11.8 inches)
Rear brakes: Single disc
Rear brakes diameter: 220 mm (8.7 inches)
Wheels: Aluminium alloy. Front 3.00 x 17”; rear 4,00 x 17”.
Physical measures and capacities
Weight incl. oil, gas, etc: 120.0 kg (264.6 pounds)
Seat height: 820 mm (32.3 inches) If adjustable, lowest setting.
Overall length: 1,955 mm (77.0 inches)
Overall width: 740 mm (29.1 inches)
Wheelbase: 1,350 mm (53.1 inches)
Fuel capacity: 14.50 litres (3.83 gallons)
Other specifications
Starter: Electric
Color options: Red/black
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