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Aprilia RS4 125 Sports Motorbike Review

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MCN overall verdict rating is 4

At £3999 OTR there are cheaper 125s but then none of those rivals have the same heritage or kudos. Despite making only 15bhp it’s great fun to ride - the fact the new four-stroke engine thrives on revs keeps the old RS spirit alive. It handles well, stops well, and most importantly looks the part. What more could a 17-year-old want?


MCN rating rating is 4
Owners' rating rating is 3

Pulling away requires a good twist of the wrist to get the new four-valve, four-stroke engine spinning and keep up the momentum. Compared to some 125s the RS4 needs to be revved and ideally kept above 8000rpm. Even som the Aprilia accelerates briskly upto 40mph before starting to level off.

Ride and Handling

MCN rating rating is 4
Owners' rating rating is 4

Due to the light weight the RS4 handles brilliantly. Flicking it from right to left is a doddle and should you need to change your line during a corner, a slight push on either bar will suffice. The launch bikes were shod with super-sticky Pirelli SC1s which really showed off the full handling potential of the RS4. It's surprisingly roomy and, compared to the old RS125, feels slightly less sporty which is a big plus.


MCN rating rating is 3
Owners' rating rating is 4

Radial brakes, braced swingarm, max speed function and braided hoses are all standard on the RS4 125. One of the accessories which will beavailable is a quickshifter. It only really works weel if changing up right before the rev limiter at 11,000rpm, changing anywhere else results in a very clunky and crude sounding gear change. But a quickshifter will give you major bragging rights over your mates.

Aprilia RS4 125 (2011-current)

Detail Value
New price £4,471
Dealer used prices
£2,960 (2011) - £4,410 (2014)
Private used prices
£2,660 (2011) - £3,970 (2014)
  View full used price info
Engine size 124 cc
Power 15 bhp
Top speed 65 mph
  MCN ratings Owners' ratings
Overall rating is 4 rating is 4
Engine rating is 4 rating is 3
Ride & Handling rating is 4 rating is 4
Equipment rating is 3 rating is 4
Quality & Reliability rating is 4 rating is 4
Value rating is 4 rating is 3

Quality and Reliability

MCN rating rating is 4
Owners' rating rating is 4

The new four-stroke 125cc engine should be much more reliable than the highly-strung two-stroke engine of the onld RS - which was often neglected by teenagers. The bikes never missed a beat being held at full throttle virtually all day in 30°C plus heat.


MCN rating rating is 4
Owners' rating rating is 3

£3999 on the road sounds like a lot for a 15bhp bike, but when you consider the Yamaha YZFR-125, arguably its closest rival, costs £4,249 it doesn't seem so bad. Yes, there are cheaper 125s out there, but none of them are as cool as the Aprilia.


Insurance group: n/a

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Model History

2011: Model introduced

Other Versions



Top speed 65 mph
1/4-mile acceleration secs
Max power 15 bhp
Max torque 11.9 ft-lb
Weight 134 kg
Seat height 820 mm
Fuel capacity 14.5 litres
Average fuel consumption 54 mpg
Tank range 174 miles
Annual road tax
Insurance group of 17
Engine size 124 cc
Engine specification Four stroke liquid cooled single cylinder with electronic injection and 4 valves. DOHC. Bore and stroke 58x47mm.
Frame Aluminium perimeter frame
Front suspension adjustment 41 mm upside-down forks
Rear suspension adjustment Asimmetric swingarm, hydraulic monoshock absorber
Front brakes 300mm stainless steel disc with radial 4 piston caliper
Rear brake 218mm stainless steel disc with single 30mm piston
Front tyre size 110/80 - 17
Rear tyre size 130/70-17

Owners' Overall Rating rating is 3.5(1 review)

  • Not bad


    Average rating rating is 3.5

    Show Details

    Ride and Handling
    Quality and Reliabilty

    I have both the 2 stroke and 4 stroke rs 125's, the 2stroke version is faster and a lot more fun to ride but the new rs4 is still a good bike, handles well, quite nippy {Quick shifter helps a bit} Only rode the bike for 50 miles so not had a chance to give it a good ragging yet but will do after the run in-period

    19 May 2012


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Comfortable at speed?

Any ideas what speed this bike will happily cruise at (in 6th) for prolonged periods? Thanks...

20 July 2013 22:20



Stupid person

They still make RS 125's alongside RS4 125's.

25 July 2011 21:27


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rip 2 stroke

bads times the rs as gone 4t love my 2t one. poor kids of today no 2 strokes left to learn how to crash and rebuild engines and checky tune for more  fun

20 July 2011 12:37


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would buy one far to dear for a 125 the two stroke was better bike


08 July 2011 15:31


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Put a 250 engine in it and I want one .....

18 June 2011 09:23

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