So I have a 2012 Civic Si, I was wondering why the factory rear isolators won’t work, and why you have to source out a pair from an 8th gen civic, if you are using 8th gen springs on a 9th gen civic.
“For the rear, it is already known that you must order 8th gen rear rubber isolators for the springs because the 9th gen top hats and springs are smaller. This will allow for a snug fit of the 8th gen rear springs on your 9th gen chassis.”