Anyone know standard bore for YZ125J Please

[YZ250H]

Title pretty much say it all.  Anyone any ideas

TIA for any help

[caps 999]

56mm according to serco apperently the same piston is run 76-82 yz125

[YZ250H]

Thanks Caps - just looking at buying a barrel bored to 57.25.  From what you are telling it could be on its last legs (??)
Thanks for the fast response mate - much appreciated.   

[caps 999]

weel the biggest piston wiseco piston make is 1.50 so its near its life span

[YZ250H]

Thanks Caps.  I will wait for another one that has a bit more life left.  I've already got one on the last bore.  Need one on the first OS,.  Patience is a virtue when it comes to this sort of thing,

[Viper666]

Wiseco make up to 2.0mm over (58mm) so it has 2 more bites at the cherry.
I actually have found other aftermarket makers that go in 0.25 jumps but rare.

Viper666

Still kicking but not sure if alive.