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  #1  
Old 06-18-2021, 06:56 AM
theO theO is offline
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Default 125cc 2003 Gearbox issues

Hi there.
I bought a 125cc 2003 ec, with a couple of smashed gears inside.Thought it would be an easyfix... Apperently not.
Nowhere to be found anything that could match. Anybody with any knowledge who could help a little. It seems that newer ec gears doesn't fit in the older box?!
If anyone has some spare junk I would be intrested( got to much money spent on this already just to scrap it).
One option is to get somebody to make the gears oc, but where to find exact measures?


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  #2  
Old 06-18-2021, 07:18 AM
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Zman Zman is offline
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There are two GG 125 gear sets on ebay right now. I am 97% certain the MC trans is the same as the EC trans.
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Old 06-18-2021, 09:12 AM
theO theO is offline
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Ok, have to dig a little...
Starting to get desperate
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  #4  
Old 06-19-2021, 07:58 AM
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Zman Zman is offline
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This is not a difficult problem.

Hop on Ebay purchase the gear set for $79.99 and put your bike back together.

https://www.ebay.com/itm/14379118547...kAAOSw9qVfig1k


I had a MC and an EC both bikes had 6speed transmissions. Riding them back to back there was no noticeable difference in gearing. I rebuilt both engines top to bottom and I did not see any differences.

Here is a MC 125 gearset.

https://www.ebay.com/itm/32437155794...MAAOSwOQ9frU-y

If you look at the photos on Ebay to compare the two gear sets. The first set from the EC125 look a bit cleaner.
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  #5  
Old 06-21-2021, 02:31 PM
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Jim Cook Jim Cook is offline
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Quote:
Originally Posted by Zman View Post
This is not a difficult problem.

Hop on Ebay purchase the gear set for $79.99 and put your bike back together.

https://www.ebay.com/itm/14379118547...kAAOSw9qVfig1k


I had a MC and an EC both bikes had 6speed transmissions. Riding them back to back there was no noticeable difference in gearing. I rebuilt both engines top to bottom and I did not see any differences.

Here is a MC 125 gearset.

https://www.ebay.com/itm/32437155794...MAAOSwOQ9frU-y

If you look at the photos on Ebay to compare the two gear sets. The first set from the EC125 look a bit cleaner.

Well done, Zman!
That's the way to help a person.
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Jim Cook
Smackover Racing
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'11 Gas Gas EC250 (primary ride)
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Several others, including project bikes, Deb's bike, and a fleet of grandkids' bikes

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  #6  
Old 06-22-2021, 07:49 AM
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Thank you Jim. We all try to help our GG family members where we can.
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