What size pipes connect the middle muffler to the rear muffler?

[Abnormal]

I need to get the muffler clamps to connect the middle muffler to the rear muffler pipes. Have not had a chance to get under the car and measure. Stock muffler system. :p

[TC535i]

What car? I think the 535 is 2 3/8, but I'm not positive...

[Abnormal]

What car? I think the 535 is 2 3/8, but I'm not positive...