IR/OR ?

  1. #1
    I've been looking around the internet for a new back box, and they say at the end of them IR/OR..
    I know that IR = Inwardly Rolled & OR = Outwardly Rolled
    Is that where the end of the exhaust is rolled in, or rolled out
    Any info would be great, and some pictures to.
    Thanks chris
  2. #2

    theres an Outwardly Rolled onenot the best of pics i know
  3. #3
    yes it means inward roll or outward.basically the tail pipe end is rolled outwardly or inwardly lol like the pic above is outward roll.inward roll you dont see the rim around the edge