New OEM Stihl MS260 open port cylinders

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Arrowhead

RARE BREED
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I'm not sure why they are doing this, I'll try to find out. I do have oem 034 jugs that are both open and closed port.

upload_2017-12-16_22-48-30.jpeg
 
Interesting. Thanks for posting.

I’ve never held an open port 260 jug in my hands, I do have a 46mm 034 open port jug here.

The open transfers move more air but lack velocity. Supposed to make more torque and less high end power.
 
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