help with exhaust

  1. #1
    can anyone tell me the standard size of a 1.1 exhaust(bore size)??
  2. #2
    2 1/4" i think mate not 100% tho
  3. #3
    ok thanx,sorted now!
  4. #4
    Its not 2 1/4 im pretty sure, its either 1 3/4 or 2