Originally Posted by BLK N-Z34

Those are spacers that go between the car and the exhaust hangers so that the exhaust system lines up properly. Sometimes you need them, sometimes you don't. I installed this system yesterday on my 2017 Nismo and I love it. Wish I had seen this before buying mine as I purchased it for around $600 new as well. This is a great deal for an awesome sounding exhaust! Good luck with sale!