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Kx125 piston size

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Hi i have a 1997/2001 kx 125 basketcase and i bought a piston for a 2001 cuz i checked the vin before anytbing else and i was wondering if a 2001 kx 125 piston will work with the 1997 motor? Any help is appreciated

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what size does the box say it is ?

what size is on top of piston ?

if it is bigger then say ~53.95mm  it is to big 

i did a quick google search and came up with 54.5mm for 1997 piston 

 

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what size does the box say it is ?
what size is on top of piston ?
if it is bigger then say ~53.95mm  it is to big 
i did a quick google search and came up with 54.5mm for 1997 piston 
 

So the piston box says 53.97mm and idk what the old piston says because i havent pulled it apart yet

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Have you checked your manual for the OEM bore of your cylinder and the recommended clearance tolerances relative to the piston and rings you've bought?

I dont have a manual cuz i bought the bike used and its a frankenbike

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Based on KXRob's Google find, your piston should be right taking into consideration the rings.

Okay i found a repair manual for both years online and the only difference in piston size is like 0.002 mm so i think ill give it a go and hope it works. Thanks for the help

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