Question about 2003 Hyosung GV 125 Aquila

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Improve the speed of 2003 Hyosung GV 125 Aquila

What do I need to do to get more top end speed @

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Gregg Mahin

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Hi, Anonymous for more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Hyosung Aquila 250 Service Manual
HYOSUNG GV250 User Manual

Posted on Jun 18, 2019


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SOURCE: Improve speed

you can buy a fuel jet kit online ups your speed not by much but it does

Posted on Apr 22, 2009


Gary Kish

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SOURCE: Improve speed

You can purchase Aisin superchargers on ebay and modify them to fit any motorcycle.

Posted on Nov 28, 2015

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The first thing you need to do is remove the end cover on the mixer, there is a screw at the top you need to undo then in an upwards motion you should be able to pull that off. behind there is the speed control plate. there are two screws at the top, and one at the bottom, the two at the top need to be adjusted the same amount, to speed up the mixer you turn the screws out, to slow down, you turn them in. you want to do each screw 1/4 turn, then test the mixer, see if this will slow the mixer down, so it regains the other speeds. If this adjustment does not work, then the problem will be the phase control board, that is part number W10325124, we sell the board, here is a link to that on our website:

Also, here is a link to the service manual for your mixer, it will go into more detail on taking the back cover off, and adjusting the speed control plate. Also if you do end up needing to replace the phase board it will show you how.

Service Manual:

If you have any questions feel free to call us.

The Mending Shed

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Contact Web Cam Racing (1-951-369-5144) in California and they can fix you up. Go to

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