jdm header outlet 2.0'' or 2.50''

[Ej6_B18c]

i want to know what the header outlet to a jdm gsr is
is it 2 inches or 2 n a half inches bcause i know for sure
that type r is 2.5 inches but im not sure about jdm gsr

[imm0rtal]

JDM headers have a 2.5" collector I believe. At least, my JDM ITR header does :P

[Ej6_B18c]

how about jdm gsr

[imm0rtal]

they should all be 2.5" collectors. I'm about 80% sure of that depending on model.

[ILIKETODRIVE]

Most JDM headers (AFAIK) have a 2.5" collector. The rest of the off-the-shelf headers usually have a 2.25" collector, maybe a 2.5". High-end stuff has upwards of 3" or more! :crazy:

Only D-Series headers have a weaksauce 2" collector.

[Ej6_B18c]

sick thnx

[BlueTeg]

OEM jdm gsr is 2 inches on the ID. Which is the spec that matters, not the OD.

OEM Jdm ITR is 2.5 on the OD, 2.1 on the ID.