Key performance

15 ch
Power
🔧
124 cc
Displacement
⚖️
136 kg
Weight
🏎️
120 km/h
Top speed
💺
880 mm
Seat height
7.0 L
Fuel capacity
💰
4 499 €
New price
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Technical specifications

Engine

Displacement
124 cc
Power
15.0 ch @ 10500 tr/min (11.0 kW)
Torque
11.4 Nm @ 8500 tr/min
Engine type
Monocylindre, 4 temps
Cooling
liquide
Compression ratio
12-12.6 : 1
Bore × stroke
58 x 47 mm
Valves/cylinder
4
Camshafts
2 ACT
Fuel system
Injection Ø 32 mm
Starter
électrique

Chassis

Frame
Cadre double berceau en acier
Gearbox
boîte à 6 rapports
Final drive
Chaîne
Front suspension
Fourche téléhydraulique inversée Ø 41 mm, déb : 240 mm
Rear suspension
Mono-amortisseur, déb : 220 mm

Brakes

Front brakes
Freinage 1 disque Ø 300 mm, étrier 2 pistons
Rear brakes
Freinage 1 disque Ø 218 mm, étrier simple piston
Front tyre
100/80-17
Rear tyre
130/70-17

Dimensions

Seat height
880.00 mm
Seat type
Selle biplaces
Fuel capacity
7.00 L
Weight
136.00 kg
New price
4 499 €

Overview

The Supermotard knows how to cultivate its success in competition, or in the 50cc class, or even with big horsepower like Ducati or KTM offer. But in the 125cc realm, few machines brandish the standard. Fortunately, Aprilia perpetuates the existence of its SX 125 to offer Supermotard to young enthusiasts.

While updating the engine to the Euro5+ standard, the firm from Noale decided to refresh its appearance. The headlight and its plate are more taut, more serious. The shoulders have been redrawn with a more vertical, more present, less prominent orientation; you’d almost guess little Dorsoduro vibes, the brand’s former large SM. The exhaust silencer becomes more compact and is adorned with black, topped by a very triangular cut of the rear section. The SX 125 seems to have gained maturity.

Regarding instrumentation, the change is very flattering. The small monochrome LCD screen has given way to a multicolored window with warm and exciting accents. Nothing is missing: speed, engine speed with color gradation, gear engaged, temperature gauge, clock, maximum speed, riding information, dual trip, consumption... or almost; a pity that Aprilia didn’t install a fuel gauge.

This motorcycle with its refined look is not meant to impress but to offer sportiness to its rider. Around its steel frame, the motorcycle announces strong suspension travel (240 – 220 mm) to absorb numerous shocks and bumps. Aprilia has emphasized technology with standard ABS with the rear wheel lift-up function. A first in the category, implemented in 2018. You won’t find this type of riding assistance on machines with much larger displacement.

You can brake hard and take lean angles, push the motorcycle in a muscular riding style to extract the best from it via its chassis. This will be more measured for the engine. The 125cc 4-stroke single-cylinder engine is clean and modern but cannot hope for better than the 15 horsepower of the legislation. Sufficient to have fun, not to send it hard. The standard has not amputated it of its power but you must now seek the maximum horsepower and torque 500 rpm higher.

The SX and its off-road cousin RX share the same engine and chassis structure. To be effective on its playing field, the SX stands out with 17-inch spoked rims, sport tires and a larger front brake disc (300 mm). A USB port is available as an option, as well as machined aluminum parts, a line of clothing, goggles and a few fashion accessories.

M.B - Photos constructeur

Standard equipment

  • Assistance au freinage : ABS
  • Jantes à rayon
  • Indicateur de vitesse engagée

Practical info

  • La moto est accessible aux permis : A

Indicators & positioning

Weight-to-power ratio
0.11 ch/kg
🔄
Torque / weight
0.08 Nm/kg
🔧
Volumetric power
119.2 ch/L
In category Enduro / offroad · 62-248cc displacement (982 motorcycles compared)
Power 15 ch Top 44%
7 ch median 15 ch 27 ch
Weight 136 kg Lighter than 6%
72 kg median 111 kg 137 kg
P/W ratio 0.11 ch/kg Top 72%
0.08 median 0.12 0.23 ch/kg

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