i need an adjustable testpipe like this one...but it has to be 3 inch...2 bolt on one side and 3 bolt on the other...need to bolt on my bisimoto header to my thermal 3 inch exhaust...i can provide aproximate lengh...but i need to be able to clock it and shorten it or make it longer.....i have a long piece of mild steel 3 inch pipe so if someone wants to just make me both open ends so i can just slide the pipe....either will work

 

Just an FYI, my experience with those is that they pretty much all leak. Why do you need to change the length?

 

you probably just use single slip joints.....I havent had issues (knock on wood) with double slip joint assemblies.