2008 Big Dog K9 Exhaust Bolt Size?

Energy One

k9bdm

Member
I just put on a 2-2 exhaust last night. When taking the old 2-1 off I noticed 2 of the exhaust bolts on the head pipe were gone. The other 2 bolts are on, I believe they were 1/2 inch, but when I try another 1/2 bolt is seems to get a starter thread and that's it, then becomes to tight and I don't wanna strip it out. So what I m asking is what is the size of the bolt that goes on the stud to blot the exhaust flange in? Trying to get this done today if anyone could let me know. Thanks a lot.
 

Brew

Troop Supporter
The nut is a half inch nut with 5/16-24 threads, you can go to ACE or any other hardware store in the nuts and bolts section and get them.
 

Texas_Rigid

Member
The exhaust flange bolts are two different sizes on each end. The end that goes into the head is 5/16-18, the end that you put the nut on to hold the flange is 5/16-24. Any ol' 5/16 bolt won't fit in the head. The diferent TPI is probably why you get a thread to start and then nothing.

You can get these bolt at any HD shop. And they are not expensive.
 
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