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2004 KTM 125sx Transmission Swap

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Hey guys i just bought a KTM 125sx used and Its a rocket. I recently noticed the 2012 125sx and the 6 speed transmission. I was wondering if anyone had the experiance with these bikes to tell me if i could change some shaft and add a gear in the transmission or something like that in order to make it a 6 speed as well.

Thanks

04ktm

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KTM switched to the 6 speed in 05 or 06 but they still use the same internal gears/shift drum/forks etc. I believe all you would have to do is split the cases, add the 6th gear and remove the stop pin in the shift drum.

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