Nut size for front sprocket yz125?

Muscle-Milk-KTM
What size is the nut thar holds the front sprocket on a 18 YZ125? Need to take an impact socket home from work & need the size.
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Wycked31
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Wycked31 2/28/2019 10:49am
2/28/2019 10:49am
Pretty sure it is 27 or 30mm. I have yz250 and it I think the 125 is probably 27mm
FGR01
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FGR01 3/3/2019 6:55am
3/3/2019 6:55am
On my 2006 YZ125 it's a weird double-stepped nut. I assume all the newer YZ125's are the same?

Anyway, the smaller outer part of the nut is 24mm or 15/16". It seems better to use the outer part as the bigger inner part is very thin, not much for the socket to grab on to.
Muscle-Milk-KTM 3/4/2019 4:44am
3/4/2019 4:44am
FGR01 wrote:
On my 2006 YZ125 it's a weird double-stepped nut. I assume all the newer YZ125's are the same? Anyway, the smaller outer part of the nut...
On my 2006 YZ125 it's a weird double-stepped nut. I assume all the newer YZ125's are the same?

Anyway, the smaller outer part of the nut is 24mm or 15/16". It seems better to use the outer part as the bigger inner part is very thin, not much for the socket to grab on to.
I’ve done the job now, it was a 24mm nut, don’t know what this double not you’re talking about is, someone else said the same. The nut was the type with a wider edge on it, like a washer I suppose & the locking tab underneath.

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