I could not just clamp this on there because it wasn’t the exact right size for my 2014 Volkswagen Jetta TDI 6 speed. I think it was closer to 2 1/4. I had to put some adapters and whatnot on to make it work. But overall, I still love this thing. Gives me the noise that I want without letting my turbo spin out of control at high rpm’s. (That’s what my mechanic told me anyway; don’t straight pipe if cuz the turbo could spin out of control at high rpm’s).