Ok. So I just got around to griding off my bolts on my heat guard, having new nuts welded onto the pipe, and putting the header/silencer on my bike. But now I need to get a longer bolt to bolt it on the end. It bolts to one of the 4 bolts that hold the grab bar in place, and I was wondering if anyone knew the dimensions of these bolts. For instance the wheel hub nuts are 10 x 1.25. Anyone know what these ones are? The head is 12mm.. I know that much.