Hi guys, I am trying to figure out the thread size on the titanium STi shift **** plastic insert. I know the inner diamater threads are M12x1.25, but what size is the threads on the actual shift **** or the outer diamater of the plastic insert? M19x1.5??? I have to make another insert because of it getting stripped out. Thanks in advance!

 

I don't know what the pitch or threaded hole in the shift **** itself, but you might be able to remove the plastic insert then take the shift **** to a major home improvement store like a Lowe's or Home Depot and try to fit some metric hardware into the hole.