MotoSpecs

2013 Aprilia RS4 125 Specifications

Sport • Specs last verified 13 July 2026

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2013 Aprilia RS4 125 Overview

Aprilia RS4 125 is a sport motorcycle, displacing 124.8 cc. Power comes from a Four stroke, single cylinder, DOHC, 4 valves engine, a compression ratio of 12.5 ± 0.5:1. On the performance side, it delivers 11.7 kW @ 10500 rpm of peak power and 11 Nm @ 8500 rpm of torque. On the road, the 2013 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. That's roughly 80.7 kg lighter than the average sport motorcycle in our database. The full 2013 Aprilia RS4 125 spec sheet below covers every technical detail, from suspension travel to tyre sizes.

2013 RS4 125 - Pros & Cons

Strengths

  • Strong power output: With 11.7 kW @ 10500 rpm and 11 Nm @ 8500 rpm of torque on tap, the RS4 125 is no slouch for its class.
  • Fuel injection: Fuel injection means consistent cold starts and clean throttle response without the fussiness of a carbureted setup.

Considerations

  • Tall seat height: At 820 mm, shorter riders will likely be on tiptoes at a standstill - worth sitting on one before you buy.
  • Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.

Wear Points & Servicing Notes

Cooling system servicing

RS4 125's Liquid cooled setup is low-maintenance provided the coolant interval is kept - old, acidic coolant is the main cause of long-term corrosion in the water passages.

Fuelling & injector care

The Electronic injection on the RS4 125 needs little beyond good fuel and periodic use of an injector-cleaner additive - no jetting or float-bowl maintenance to worry about.

Brake disc and pad wear

Braking up front comes from Single Ø300 mm disc, 4 piston caliper - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.

Suspension condition on used examples

The RS4 125's suspension runs ø41 mm Upside down fork at the front. The rear uses Asymmetric swingarm with monoshock. Fork-seal condition and rear linkage play are the two things worth checking before buying used.

Final drive maintenance

The RS4 125 uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.

Frame & chassis check

Built around a Aluminum perimeter frame, the RS4 125's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.

Low-speed handling

122 kg keeps the RS4 125 easy to move around in tight spaces, car parks and on the stand alike.

RS4 125 - Buying & Maintenance Guide

What to check before buying

Before handing over money for a used 2013 Aprilia RS4 125, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy RS4 125 should catch quickly and settle into a smooth idle.

Oil and filter changes

Nothing protects a RS4 125's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.

Fuel system care

Fuel injection on the RS4 125 needs little attention beyond decent fuel and an occasional system-cleaner additive. Anything left standing for three months or more should have its fuel drained and replaced before it varnishes the injectors.

2013 Aprilia RS4 125 - Frequently Asked Questions

What engine does the 2013 Aprilia RS4 125 have?
The 2013 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 2013 Aprilia RS4 125 weigh?
The 2013 Aprilia RS4 125 weighs 122 kg. This is the manufacturer's dry figure.
How much power does the 2013 Aprilia RS4 125 make?
The 2013 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 2013 Aprilia RS4 125?
The 2013 Aprilia RS4 125 has a 14.5-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 241-290 km between stops.
Is the 2013 Aprilia RS4 125 suitable for shorter riders?
The 2013 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 2013 Aprilia RS4 125 have?
The 2013 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 2013 Aprilia RS4 125 use?
The 2013 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 2013 Aprilia RS4 125 have?
The 2013 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

Top Speed

Not published by manufacturer

Weight

122 kg / 269 lbs

Fuel Capacity

14.5 Liters / 3.8 gal

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Full 2013 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
Max Power 11.7 kW / 16 hp @ 10500 rpm
Max Torque 11 Nm / 1.12 kgf-m / 8.1 ft/lb @ 8500 rpm
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

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.

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