i bought a RSR cat back exhaust and of course it did not come with a donut gasket. since a stock OEM one will not fit the larger diameter piping, what donut gasket can i use that will fit? I was thinking of ordering an OEM donut gasket from an Integra Type-R because the piping is 2.25" on a type R isnt it? What about the A-pipe? The RSR A-pipe is a little bigger than the stock one so thats why my stock donut wont fit on there. will the ITR donut gasket work?

i was also thinking of buying a OEM donut gasket for my car and then just dremeling out the inside to increase the diameter of it so it will fit the larger A-pipe. will this work? or am i better off with a ITR one?

i already bought a donut gasket from Midas and it was a little large, but it did fit on the piping. when i bolted it down, one side was tighter than the other due to the wrong height of it im guessing. the OEM one looked a little smaller height wise.

I dont know if this is causing my exhaust to be rather loud, but i bought the RSR becuase everyone said it was quiet. well, its not. hopefully, replacing that donut gasket will quiet it down. i should have bought an Apexi World Sport. go figure.

BTW, i had to drill out the holes for the cat to bolt up to the A-pipe. it would not go past the threads on the cat bolts. i drilled those suckers out and it fit. hopefully they didnt send me an a-pipe for a 92-95 civic. i have a 96 BTW. is there a difference in the A-pipes between the 5th and 6th gen civics? what about with aftermarket exhausts? to RSR for a good fitting exhaust and not supplying me with the proper gaskets. sheesh.

 

same problem when i installed my header, I hope you find a fix, I still have not

 

if your lookin for a 2.5" donut gasket u can order one for a legend. i forget what year..but i know one of them is 2.5".

 

2.5" is a little too big. the piping on the RSR is 60 mm i believe. the RSR A-pipe is smaller than 60 mm but it is a little bigger than the stock A-pipe.