Aprilia SX 125 - 2017 Specifications and Reviews

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General information

CategorySuper motard
ModelAprilia SX 125
Year2017

Engine and Transmission Specifications

Emission detailsEuro 3
ClutchMulti-disc wet clutch.
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemSeparate mixing with variable displacement, volumetric pump.
IgnitionElectronic CDI ignition.
Fuel systemCarburettor. Dell’Orto VHST 28
Bore x stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression12.5:1
Top speed120.0 km/h (74.6 mph)
Torque16.00 Nm (1.6 kgf-m or 11.8 ft.lbs) @ 9750
Power21.45
Engine detailsAluminium cylinder with Nikasil liner.
Engine typeSingle cylinder, two-stroke
Capacity:122.00 ccm (7.44 cubic inches)
 
 

Brakes, suspension, Frame and wheels

WheelsAluminium
Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc. Floating caliper with single piston.
Front brakes diameter260 mm (10.2 inches)
Front brakesSingle disc. Floating caliper with two parallel pistons.
Rear tyre dimensions150/60-17
Front tyre dimensions110/70-17
Rear suspension travel270 mm (10.6 inches)
Rear suspensionSteel swingarm. Hydraulic monoshock with piggy back cylinder.
Front suspension travel260 mm (10.2 inches)
Front suspension40 mm upside down hydraulic fork.
Frame typeHigh strength steel frame with double trellis beam and double cradle. Detachable seat frame.
 
 

Physical measures and capacities

Reserve fuel capacity1.30 litres (0.34 gallons)
Fuel capacity10.00 litres (2.64 gallons)
Wheelbase1,480 mm (58.3 inches)
Overall width850 mm (33.5 inches)
Overall length2,165 mm (85.2 inches)
Seat height830 mm (32.7 inches) If adjustable, lowest setting.
Power/weight ratio0.1865 HP/kg
Dry weight115.0 kg (253.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack
Electrical12V 180W generator.
StarterKick

Performance Profile & Rider Fit

14.8 hp
Peak Power

Best For

Track30%
City85%
Cornering80%
Daily Riding65%
Touring20%
Passenger25%

Rider Profile

Best ForThis bike suits new and younger riders, including those on a learner or A1-equivalent licence, who want a light, approachable machine to build confidence on.
PurposeIt's built as a nimble supermoto-styled commuter for weaving through city traffic and having fun on twisty back roads rather than for outright speed.
Rider FitIts low weight and tall but slim seat make it easy to manage at a stop for shorter or less experienced riders, though the 880mm seat height requires reasonable inseam length.
CharacterPlayful, flickable, and eager to be thrown around corners, it rewards an energetic riding style over long-distance cruising.
Not Ideal ForIt's not the right choice for riders wanting highway speed, long motorway touring comfort, or serious off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 830mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2017 Aprilia SX 125, with a relaxed knee angle of around 130 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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