Riddle me this.

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MickUK

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Aug 23, 2009
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Ok so im putting a YX140 top end on my bike.

I thought it had a 57mm stroke and a 13mm wrist pin.

But it actually has a 55.5mm stroke and a 13mm wrist pin.

Everything fits, Just to a case of will it work?

Both the cylinders are 78mm tall.

But the piston when its at TDC will be 1.5mm further away that it would be on the YX140, So this would be bad im guessing?
 
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