2004 Aprilia RS125
- Engine type - Single cylinder two-stroke,
liquid cooled. Aluminium cylinder with Gilnisil
coating on barrel. Reed intake and exhaust
port control valve. Separate lubrication.
- Bore and stroke - 54 x 54.5 mm
- Displacement - 124.8 cc
- Compression ratio - 12.5 ± 0.5:1
- Carburettor - Dell'Orto PHBH 28 BD
- Ignition - CDI capacitor discharge electronic
- Starting - Electric starter
- Generator - 12V - 180 W
- Lubrication - Separate mixing with variable
displacement volumetric pump
- Gear box - Six speed
- Primary drive - Gear
- Final drive - Chain
- Clutch - Multiple disk in oil bath
- Frame - Cast aluminium sloping twin-spar
with thin walled structural shell and cross
rib reinforcement
- Front suspension - Upside-down hydraulic
action telescopic fork, 40 mm Ø inners, wheel
travel 120 mm
- Rear suspension - Cast aluminium swing-arm
with asymmetrical members, thin walled structural
shell, single hydraulic monoshock, adjustable
spring preload, wheel travel 120 mm
- Brakes - Front: floating calliper, disk
Ø 320 mm, four parallel pistons, 32 mm diameter
- Rear - Single disk, Ø 220 mm, twin piston
calliper, piston diameter 32 mm
- Wheels - Five spoke aluminium alloy, front
3.00 x 17", rear 4.00 x 17"
- Tyres - Tubeless radials, front. 110/70
ZR 17", rear 150/60 ZR 17"
- Dimensions - Maximum length 1,950 mm
- Maximum width at handlebars - 720 mm
- Maximum height at windshield - 1,135 mm
- Seat height - 805 mm
- Wheelbase - 1,345 mm
- Tank capacity - 14 litres (3.5 litre reserve)
- Colours - SBK Replica, GP-1 Replica
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