4 extra o rings? In Yz 125

I have a 01 yz 125 I know two of the o rings are for the cylinder head, what are these smaller thicker extra 4 for? IMG_1510249119.057314.jpg

Pipe orings:thumbsup:

Pipe orings:thumbsup:

Ahh that’s what I thought

I'll just add:

You'll see there are two sets/sizes for the exhaust as the pipe changed from inside the spigot, to outside the spigot AKA male fitting/femal fitting around 98-2001. 

I'll just add:
You'll see there are two sets/sizes for the exhaust as the pipe changed from inside the spigot, to outside the spigot AKA male fitting/femal fitting around 98-2001. 

Ok thanks

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