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Can anyone confirm the proper spring length for the stock YZ 125 pipe?


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I found several references to 75mm on line and that's what I bought, but they seem too tight.  Before I take a guess and spend another $10 (I know, not much in the dirt bike world, but still...), can anyone confirm what length works well?  Thanks!

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The OEM spring on late model YZ125's (06-15) is about 90mm long,

measured no tension / in the middle of the hook bends.

 

On the same subject, does anyone know if a FMF Fatty pipe uses

the same lenght OEM springs or requires longer/shorter ones?

(same bike as above)

Edited by mlatour
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The OEM spring on late model YZ125's (06-15) is about 90mm long,

measured no load / in the middle of the hook bends.

On the same subject, does anyone know if a FMF Fatty pipe uses

the same lenght OEM springs or requires longer/shorter ones?

(same bike as above)

The OEM springs work great on the FMF Fatty.

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