Question about 2008 Aprilia RS 125

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Hi, Im from Singapore. i bought this 2nd hand aprilia rs 125 '08 yesterday, everything seems normal when im on normal street, but when i hit the highway my bike just can go more than 60 km/h, the engine sounds normal( no roaring/noise heard) and seem to pump out lots of smoke from the exhaust.. :( i really felt like something is holding me back, i still get the same speed even after pulling the throtle to the fullest. i return back to the bikeshop only to be told that there's something wrong with the exhaust and thats the only reason they gave me.. Is what they say true? really need ur help...

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Sounds to me like you need a tune up. Check the fuel filter first, I suggest you change it. Are you using the gas that came with the bike? Change it also, if you are. Gaas that sits accumulates moisture and sediment. Could be clogging your jets at high speed

Posted on Apr 03, 2011

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Posted on Jan 02, 2017

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Ok l have a aprilia rs 125 last week l put a new 2 stock on it was abiger pipe but it fitted now there is black stuff coming out exhaust


Im not sure I understand what your asking ? It's normal to have some black burnt oil coming out of your rs exhaust either way though.

May 06, 2015 | Aprilia Motorcycles

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Hi im not sure what 2 stroke oil is best for my aprilia rs 125 extrema can anyone help ?


Hi, David for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix or parts inquiry. If necessary transport your vehicle to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
DOWNLOAD 1997 Aprilia Rs 125

May 21, 2012 | 1997 Aprilia RS 125 Extrema

1 Answer

I have a 2003 rs 250, i jump started the bike battery off a car because it was flat and i was unable to get to a charger. something has happened to the rev counter, the two digital gauges either side still...


Hi, Troythickpen never jump start your bike from a car it's amperage is over the top of your bikes delicate electronics and you will inevitably fry something expensive and I am sorry you can't find the first and best tool you ever bought for your Aprilia but despair not for a mere $10 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
DOWNLOAD 2003 Aprilia Rs 250

Apr 06, 2011 | 2002 Aprilia RS 250

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My aprilia rs 125 battery keeps going flat i charge the battery up and last round about 1 mile then gose flat my engine then cuts out i leave for 10mins then it gose again im thinking the magneto as ive...


Hi, Swiftb152 and the usual suspects are:
1. Voltage regulator/rectifier not grounded.
2. Engine ground wire loose or broken.
3. Faulty voltage regulator/rectifier module.
4. Loose or broken wires in charging circuit.
5. Faulty stator and/or rotor.
For more information about your issue, please visit the websites below. Good luck and have a nice day.
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Mar 16, 2011 | 1999 Aprilia RS 125 Extrema

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What is da small button on da left hand side of my 2005 rs 125


Hi, Ethan_pfc it's a lap timer and I am sorry you can't find the first and best tool you ever bought for your Aprilia but despair not for a mere $10 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
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Mar 30, 2010 | 2005 Aprilia RS 125

2 Answers

Whilst riding my aprilia,my display will disappear,no lights,indicators,brake lights.a couple of minutes later everything comes back to normal,then itll do it again.if i stop it wont start off...


It seem like your on the right track ,if you have power one minute and nothing the next .you could have as you suspect an eathing problem ,Wires can rub and the plastic caseing will exspose the bare wire which will cause the problem you are getting .Theres no quick fix here you need to check any wires that could be eathing out ,And this could be anywhere on the bike around the effected area where you are having the problem .

Mar 16, 2010 | 2000 Aprilia RS 125

1 Answer

My aprilia rs 125 wont rev any higher than 8000 revs it sounds like it hits a limiter but if u blip the throtle it does red line eventually any ideas as im running out and i donnt really want to take it to...


Hi, Big2 and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your question please visit the website below. Good luck and have a nice day.
DOWNLOAD 2002 Aprilia Rs 125

Nov 03, 2009 | 2002 Aprilia RS 125

1 Answer

Aprilia RS 125 Power Loss


I guess youwillhaveto adjust the clutch cable so as to open the plates more at the pressure plates to let the clutch plate rotate freely instead of binding thus the low rpm.
Hope this helps!

Oct 29, 2009 | 2004 Aprilia RS 125

1 Answer

Rs 125 wont redline.....please help!!! PLEASE.


there's a rev limiter . Im not sure of your bike model but a simple google might help.

Mar 13, 2009 | 2008 Aprilia RS 125

1 Answer

2006 Aprilia RS125 doesnt start


Hi .... Try switching the petrol off just prior to stopping the engine and start up again with the petrol OFF. There's enough petrol in the carb to start the bike. A good battery should show over 12 volts. Take the plugs out and give them a good clean or replace them. Is there a petrul pump fitted ? A two stroke needs to be ridden quite hard to maintain efficeincy, higher revs etc ........ let us know how you get on ?

Dec 19, 2008 | 2006 Aprilia RS 125

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