Question about 1999 Aprilia RS 125 Extrema

1 Answer

Bike stutters under powerband but when power band hits is fine

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 447 Answers

Sounds like your bike needs a tune up. Timing bad or carbs need adjusting

Posted on May 16, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My yamaha dt 125 r takes to long for power bands

Hi, Anonymous your power valve may be going south for more information about your question and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
Yamaha DTR Power Problem Not Hitting powerband Help needed motorcycles
DT125 whys my bike so slow
OEM parts for Yamaha

May 07, 2014 | Yamaha DT 125 R Motorcycles

1 Answer

My 1989 yz250 wont hit powerband what can I do?

Hi, Jorge for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
1999 yz250 not hitting power band
Dirt Rider Magazine
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha

Feb 02, 2014 | Yamaha YZ 250 Motorcycles

1 Answer

1986 Yamaha yz 250 won't rev to powerband

Hi, Patrick 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 issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
1999 yz250 not hitting power band
2001 YZ 250 Won Hit Powerband Yamaha 2 Stroke
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha

Oct 13, 2011 | 2003 Yamaha YZ 250

1 Answer

When im in 5th gear and the powerband kicks in the bike shifts back in 4th

keep your foot clear of the shift lever. It cannot shifton its own because the gear train is under a load and more so when the power band kicks in.

Nov 13, 2009 | 2003 kawasaki KX 250

3 Answers

Bike boggs down no powerband rm 250

i have a 92 rm 250 an i just had it fully rebuilt an it laggs in power band an splutters an feels guttles

Oct 09, 2009 | 2003 Suzuki RM 250

3 Answers


The power band is the point wheneverything is nominal and and peak performance is realized. The air/ fuel ratio , timing, rpms It's mor predominant and noticeable in a motorcycle because of handling and weight All engines have them and these "power bands are really the peak of what s also called the torque curve Band meaning sp[ecific point and duration everything is working together. a gas lawn mower engine is set up to run inside this band. Thats why it doesn't fall on its fsce on the first patch of grass.
A diesel engine has a specific rpm range it has to maintain under load to get nominal horses.. If everything is functioning at nominal, max power is put out. Surprisingly enough it can be felt in all engines if paid attention . That's all it is, no special "bands" or parts. Knowing where the power band(range is makes a big difference on any machine. On an electric motor peak torque is @ let's say 1850 rpms. go faster useless lower toyque. go slower power drops To keep the range of the power band constant. everythinhg needs to be constant, like fuel mix, spark plug condition ,air filter andcarb adjustments.. I had a bike I hate and feared the power band. I would fall into it not paying attenyion and it would litterally crawl out from under me. All it is is that narrow band of peak performance..

Sep 23, 2009 | 2003 Suzuki RM 125

1 Answer

2005 YZ 250 bike has no power in the powerband motor starts


Aug 25, 2009 | Yamaha YZ 250 Motorcycles

2 Answers

1985 CR125R powerband seems to lag before it hits

The only way to alter the band is to alter the expansion chamber to change the sonic pulse timing forming the port wall. The best way to do that is to try various chambers to see which design works best on your bike.

A good workaround solution would be to go up 2 teeth on the rear sprocket. This would allow the engine an easier and quicker run-up to the power band and more constancy within the power band. Yes, the top end speed will be less but you are quicker out of the hole and out of turns.

Please rate this solution as "FixYa" if I have answered your questions. Thanks!

Mar 25, 2009 | Honda CR 125 R Motorcycles

Not finding what you are looking for?
1999 Aprilia RS 125 Extrema Logo

Related Topics:

235 people viewed this question

Ask a Question

Usually answered in minutes!

Top Aprilia Experts


Level 3 Expert

76118 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

4521 Answers

Fabrice Wolters

Level 2 Expert

265 Answers

Are you an Aprilia Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides