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2012 Aprilia RS4 125 Overview
The 2012 Aprilia RS4 125 is a sport motorcycle built around 124.8 cc of displacement. Under the tank sits a Four stroke, single cylinder, DOHC, 4 valves engine, a compression ratio of 12.5 ± 0.5:1. 2012 Aprilia RS4 125 delivers 11.7 kW @ 10500 rpm of peak power and 11 Nm @ 8500 rpm of torque. From a practical standpoint, the 2012 RS4 125 tips the scales at 122 kg, carries a 14.5-litre fuel tank, offers a seat height of 820 mm and spans a 1350 mm wheelbase. Scroll down for the complete 2012 Aprilia RS4 125 spec sheet covering every technical detail from suspension travel to tyre sizes.
2012 RS4 125 - Pros & Cons
Strengths
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⚡
Strong power output: 2012 Aprilia RS4 125 makes 11.7 kW @ 10500 rpm with 11 Nm @ 8500 rpm of torque - competitive figures for its class.
Considerations
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📏
Tall seat height: The 820 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
Owner Experiences & Common Issues
General ownership notes
The 2012 Aprilia RS4 125 has built a reputation for solid everyday reliability when serviced to schedule. As with any motorcycle of this era, documented service history is the single biggest indicator of long-term reliability when buying used.
RS4 125 - Buying & Maintenance Guide
What to check before buying
When inspecting a used 2012 Aprilia RS4 125, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained RS4 125 should fire up cleanly and settle to a smooth idle within a few seconds.
Oil and filter changes
Regular oil changes are the single most important maintenance task on any RS4 125. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.
2012 Aprilia RS4 125 - Frequently Asked Questions
What engine does the 2012 Aprilia RS4 125 have?
The 2012 Aprilia RS4 125 uses a Four stroke, single cylinder, DOHC, 4 valves engine with 124.8 cc of displacement. It is liquid cooled.
How much does the 2012 Aprilia RS4 125 weigh?
The 2012 Aprilia RS4 125 weighs 122 kg. This is the manufacturer's dry figure.
How much power does the 2012 Aprilia RS4 125 make?
The 2012 Aprilia RS4 125 produces 11.7 kW @ 10500 rpm of power and 11 Nm @ 8500 rpm of torque. These are peak figures.
What is the fuel tank capacity of the 2012 Aprilia RS4 125?
The 2012 Aprilia RS4 125 has a 14.5-litre fuel tank.
Is the 2012 Aprilia RS4 125 suitable for shorter riders?
The 2012 Aprilia RS4 125 has a seat height of 820 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.
What brakes does the 2012 Aprilia RS4 125 have?
The 2012 Aprilia RS4 125 uses Single Ø300 mm disc, 4 piston caliper at the front and Single Ø218 mm disc, 1 piston caliper at the rear.
What tyre sizes does the 2012 Aprilia RS4 125 use?
The 2012 Aprilia RS4 125 runs 110/80 -17 front and 130/70 -17 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2012 Aprilia RS4 125 have?
The 2012 Aprilia RS4 125 is fitted with a 6 Speed transmission.
Aprilia RS4 125 Spec Evolution
The Aprilia RS4 125 was produced across 6 model years (2011-2020). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2011 |
2013 |
2015 |
2016 |
2018 |
2020 |
| Fuel Capacity |
14.5 Liters / 3.8 gal |
14.5 Liters / 3.8 gal |
14.5 Liters / 3.8 gal |
14.5 Liters / 3.8 US gal |
14.5 Litres / 3.8 US gal |
14.5 Litres / 3.8 US gal |
| Brakes - Front |
Single Ø300 mm disc, 4 piston caliper |
Single Ø300 mm disc, 4 piston caliper |
Single Ø300 mm disc, 4 piston caliper |
Single Ø300 mm disc, 4 piston caliper |
Single 300 mm disc, 4 piston caliper |
Single 300 mm disc, 4 piston caliper |
| Wheelbase |
1350 mm / 53.1 in |
1350 mm / 53.1 in |
1350 mm / 53.1 in |
1350 mm / 53.1 in |
1353 mm / 53.2 in |
1353 mm / 53.2 in |
| Brakes - Rear |
Single Ø218 mm disc, 1 piston caliper |
Single Ø218 mm disc, 1 piston caliper |
Single Ø218 mm disc, 1 piston caliper |
Single Ø218 mm disc, 1 piston caliper |
Single 218 mm disc, 1 piston caliper |
Single 218 mm disc, 1 piston caliper |
| Final Drive |
Chain |
Chain |
Chain |
Chain |
Chain: 60/13 (4.61) |
Chain: 60/13 (4.61) |
| Height |
1138 mm / 44.6 in |
1138 mm / 44.6 in |
1138 mm / 44.6 in |
1138 mm / 44.6 in |
1135 mm / 44.6 in |
1135 mm / 44.6 in |
| Gear Ratios |
1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05) |
1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05) |
1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05) |
1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05) |
1st 11/33 (0.33) 2nd 15/30 (0.50) 3rd 18/27 (0.67) 4th 20/24 (0.83) 5th 25/27 (0.92) 6th 23/22 (1.05) |
1st 11/33 (0.33) 2nd 15/30 (0.50) 3rd 18/27 (0.67) 4th 20/24 (0.83) 5th 25/27 (0.92) 6th 23/22 (1.05) |
| Width |
740 mm / 29.1 in |
740 mm / 29.1 in |
740 mm / 29.1 in |
740 mm / 29.1 in |
760 mm / 29.9 in |
760 mm / 29.9 in |
Key Specifications
Engine
Four stroke, single cylinder, DOHC, 4 valves
Power
11.7 kW / 16 hp @ 10500 rpm
Torque
11 Nm / 1.12 kgf-m / 8.1 ft/lb @ 8500 rpm
Fuel Capacity
14.5 Liters / 3.8 gal
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Full 2012 Aprilia RS4 125 Specifications
Year
2012 - 13
Make Model
Aprilia RS4 125
Seat Height
820 mm / 32.3 in
Wheelbase
1350 mm / 53.1 in
Height
1138 mm / 44.6 in
Length
1953 mm / 76.8 in
Width
740 mm / 29.1 in
Dry Weight
122 kg / 269 lbs
Fuel Capacity
14.5 Liters / 3.8 gal
Displacement
124.8 cc / 7.6 cu in
Engine Detail
Four stroke, single cylinder, DOHC, 4 valves
Bore x Stroke
58 X 47 mm
Compression Ratio
12.5 ± 0.5:1
Cooling System
Liquid cooled
Emissions
Euro 3
Fuel Induction
Electronic injection
Ignition
Electronic with CDI capacity discharge
Starter
Electric
Clutch
Multiple discs, in oil bath
Final Drive
Chain
Gear Ratios
1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05)
Transmission / Drive
6 Speed
Frame Type
Aluminum perimeter frame
Suspension - Front
ø41 mm Upside down fork
Suspension - Rear
Asymmetric swingarm with monoshock
Wheel Travel - Front
110 mm / 4.3 in
Wheel Travel - Rear
130 mm / 5.1 in
ECU
Magneti Marelli MIU G3, Ø32 mm
Brakes - Front
Single Ø300 mm disc, 4 piston caliper
Brakes - Rear
Single Ø218 mm disc, 1 piston caliper
Tyres - Front
110/80 -17
Tyres - Rear
130/70 -17
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