APRILIA RS125 (2017 - on) Review

At a glance

Owners' reliability rating: 3 out of 5 (3/5)
Power: 15 bhp
Seat height: Medium (32.3 in / 820 mm)
Weight: Low (295 lbs / 134 kg)

Prices

New £4,700
Used N/A

Overall rating

Next up: Ride & brakes
3 out of 5 (3/5)

Underneath all the racing razzmatazz the Aprilia RS 125 is a fairly stock four-stroke 125.

But it is the best looking one on the market, especially if you get the MotoGP rep with its quickshifter, and that still makes it the stuff of teenage dreams. At a price…

Ride quality & brakes

Next up: Engine
3 out of 5 (3/5)

While there is little to criticise about the RS’s chassis (aside from the fact it is painted and not polished) it does nothing to really distinguish itself from the likes of the Yamaha YZF-R125 or KTM RC125. The suspension is surprisingly good and it handles impressively as well as being nice and roomy for taller riders, but it’s doesn’t feel like a GP-refugee like the older two-stroke generation. It feels, slightly disappointingly considering its RS 125 name, just like its rivals…

Engine

Next up: Reliability
4 out of 5 (4/5)

The engine is all very smooth in its running thanks to a balancer shaft, and makes the required 15bhp that allows it to top 80mph, but like all small capacity four-strokes it is very flat in its performance and hits a brick wall of a rev limiter at 11,000rpm. These characteristics make it feel functional rather than two-stroke thrilling like its namesake.

Reliability & build quality

Next up: Value
4 out of 5 (4/5)

The days of the old RS 125 two-stroke nipping up are long gone and the four-stroke RS4 has a fairly proven reliability record. Much of any 125’s reliability issues stem from the owner and a general lack of maintenance, so if well looked after there should be nothing to fear. The build quality appears equally high on the RS 125.

Value vs rivals

Next up: Equipment
3 out of 5 (3/5)

With a price tag of a £4700 the RS 125 is certainly at the top end of the 125 market, but you have to remember that this is a machine built in Italy and not some far eastern country like the competition. The MotoGP rep is only £100 more and adds a quickshifter, which is very cool, but with the KTM RC125 costing £4299 and the Yamaha YZF-R125 a salty £4599, the RS 125 is still a premium machine.

Equipment

3 out of 5 (3/5)

The RS’s chassis is high spec with an aluminium frame, inverted forks and a radial brake with ABS, which is cool, and the RSV4-style fairing is also a nice touch. Annoyingly, a USB port is an optional extra and you also need to pay more for smartphone connectivity.

Specs

Engine size 124cc
Engine type Four-stroke, liquid-cooled single
Frame type Aluminium
Fuel capacity 14.5 litres
Seat height 820mm
Bike weight 134kg
Front suspension 40mm inverted forks, non-adjustable
Rear suspension Single shock, non-adjustable
Front brake 1 x 300mm disc, four-piston radial caliper; ABS
Rear brake 218mm disc, one-piston caliper ABS
Front tyre size 100/80X17
Rear tyre size 130/70x17

Mpg, costs & insurance

Average fuel consumption 75 mpg
Annual road tax £25
Annual service cost -
New price £4,700
Used price -
Insurance group -
How much to insure?
Warranty term 2 years unlimited

Top speed & performance

Max power 15 bhp
Max torque 7.7 ft-lb
Top speed -
1/4 mile acceleration -
Tank range 210 miles

Owners' reviews for the APRILIA RS125 (2017 - on)

2 owners have reviewed their APRILIA RS125 (2017 - on) and rated it in a number of areas. Read what they have to say and what they like and dislike about the bike below.

Review your APRILIA RS125 (2017 - on)

Summary of owners' reviews

Overall rating: 2.5 out of 5 (2.5/5)
Ride quality & brakes: 3 out of 5 (3/5)
Engine: 3.5 out of 5 (3.5/5)
Reliability & build quality: 3 out of 5 (3/5)
Value vs rivals: 3.5 out of 5 (3.5/5)
Equipment: 3 out of 5 (3/5)
3 out of 5 The best looking 125 out there by far, with some caveats…
21 October 2024 by Michael

Year: 2023

When it runs, it is very fun and pragmatic. You could cruise on motorways without feeling unstable and attack corners leaning with confidence (Probably reminiscing your MotoGP hero at the same time) and you will smile cheekily every time people compliment on how good it looks and act surprised when you tell them it is a 125. I would however not recommend getting this bike as a beginner… You will almost certainly drop it at some point, and that’s when the pain begins… Even if you are so diligent in keeping it upright, you still could get nasty surprises, which according to forums, is not uncommon…

Ride quality & brakes 4 out of 5

Suspension is surprisingly good for a 125. Also carried a pillion yesterday for the first time ever and it still felt solid, albeit with a much more gentle acceleration off the stand still. Both brakes have very decent stopping power (a bit too much in the front when you are not used to it!). Extremely light and nimble, and grips amazingly well when cornering. I have no trouble keeping up with much larger bikes in corners thanks to this and it gives a lot of confidence when filtering in London. The engine braking is a little intrusive compared to other bikes I tried, to the point where I thought my brake pads must be rubbing but they were not.

Engine 5 out of 5

It’s got a characteristic howl when you open it up or give a quick twist, and gives you a bit of a giggle off the line. But it is by no means fast (it is a 125 after all ). Peak torque imo kicks in just below the mid rev range. Power delivery is smooth and very easy to control for beginners. That was the main notable thing when I first started riding compared to the 125F Hondas I rode in my CBT. And yes it can pull to 70 mph comfortably even before I did my break in service…

Reliability & build quality 2 out of 5

Paint coating feels premium for a 125. So does the chassis and swing arms. The design of the footpeg meant that you would struggle to get it down when wearing race boots and would look like an idiot when stopping. But this bike just cannot be dropped, like at all. Even the smallest of damages require a trip back to the dealer due to how it is designed and assembled together… Dropped on the side once and the mirror popped out (which is surprising given that they are bendable and shouldn’t have suffered enough impact to pop anyway). On a Japanese bike, it would be a quick fix. But here you would need to undo the entire windshield and front panel to pop it back in. Another drop at below 10mph within a week of getting it brand new cost me close to £800 to fix because the parts just snap off cleanly… After my third breakdown (gear rod bolt snapped whilst riding peacefully at 20mph in London…) at the start of this month I decided to move onto a Japanese big bike for ease of maintenance and reliability…

Value vs rivals 3 out of 5

Have not done my break in service yet but would be around the £170 mark. Mpg is decent but definitely not near the acclaimed 210mile fuel range (clocked 460 miles atm and went for gas three times so far). The fuel indicator is also not accurate which can add to stress. Price wise it is costly for a 125, but it is a very dashing bike, especially once you get the L plates off after getting your full A…

Equipment 3 out of 5

Tyres are very decent for a 125 with excellent grip for leaning. ABS is included. It was difficult however to get a quadlock phone mount. None of the fork stems or handle bar mounts work and it was only when they launched the reservoir mounts that I finally found a solution. Also shame that phone and app connectivity is an extra you need to pay for (which I annoyingly did not know). Compared to other rivals, Yamaha and KTM have TFTs but hey we beat them on the looks. One thing I really struggled as a beginner on this bike, though, is the lack of a gear indicator. It only shows neutral but once you learn to throw gears out of the window and just listen to the engine/feel for vibrations it becomes second nature.

Buying experience: Bought new from an official Aprilia dealer (Lloyd Cooper Motorcycles in Watford) for £4700

2 out of 5 Do not buy.
15 February 2023 by Nen

Year: 2018

Wasn’t a fan at all. Sent back shortly after.

Ride quality & brakes 2 out of 5

Really hard to ride and change gears it’s not nice to ride at all.

Engine 2 out of 5

As 125’s go it’s decent but I’ve had faster farts.

Reliability & build quality 4 out of 5
Value vs rivals 4 out of 5
Equipment 3 out of 5

Average

Buying experience: Bought from optimum bikes. Sent back as had damage on fairings which were hid.

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