Question about Yamaha Ybr 125 Motorcycles

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How to derestrict cdi on ybr 125 efi - Ybr 125 Yamaha Motorcycles

Posted by Anonymous on

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  • Yamaha Master
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Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. 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.
Yamaha 2006 YBR125 Owner Manual
OEM parts for Yamaha
http://www.svracingparts.com/wp-content/uploads/2014/05/mr125_service_manual_eng.pdf
De restricting Yamaha YBR 125
Derestricting my ybr

Posted on Dec 16, 2016

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2712 Answers

SOURCE: derestricted Atlantic 125

The only way that 125's are usually restricted is through the exhaust. Theres usually some for of washer or something in there that restricts the exhaust that you can dremel out.

Posted on Nov 10, 2008

  • 101 Answers

SOURCE: Front sprocket

Hi ........... One tooth less will give you more top speed (if you can pull top revs) but will reduce accelleration. If you go for one tooth less you'll need to tighten the chain and/or remove a link. It's a trade off ............ decide what you want the bike to do.

Posted on Dec 24, 2008

  • 1 Answer

SOURCE: warning light

The warning light and EFI will disappear once you fit power valve :)

I've got 2008 Aprilia RS125 and CDI I derestricted first.. I had warning light on until I fitted power valve.. No warning light now.

Posted on Apr 09, 2009

  • 1 Answer

SOURCE: warning light

hi how did you know were 2 drill the cdi ? i have a 2008 rs i have fitted the powervale but its not working from reserch i think drilling the cdi activates the powervale but if you dont have one the light comes on on ur clock all i need 2 know is were 2 drill the cdi thanx

Posted on Jul 04, 2009

robotek
  • 1512 Answers

SOURCE: yamaha ybr 125 top speed

Hi les
Not much to start with here unfortunatly mate. A free flow muffler will help top end speed, change the factory airbox to a K&N style pod air filter, other than that, hugging the tank at top speed :) If you do change these parts, you may also need to increase the main jet size to richen up the mixture for better tuning of the motor with the better flowing parts. This bike has a top speed of 100kmp and produces 10 hp, so you may only expect to get at best less than 1 extra neddy, and perhaps another 5 km/hr.... I suggest upgrading to a bigger machine of you feel the need for speed :)
If its 125's you are into, test drive a Honda CBR 125R 6 speed fuel injected 13.4 horsepower, and good for 120km/hr
regards robotek

Posted on Jul 10, 2009

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Hi, Anonymous 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.
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Warning light


hi how did you know were 2 drill the cdi ? i have a 2008 rs i have fitted the powervale but its not working from reserch i think drilling the cdi activates the powervale but if you dont have one the light comes on on ur clock all i need 2 know is were 2 drill the cdi thanx

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Warning light


The warning light and EFI will disappear once you fit power valve :)

I've got 2008 Aprilia RS125 and CDI I derestricted first.. I had warning light on until I fitted power valve.. No warning light now.

Nov 23, 2008 | 2008 Aprilia RS 125

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