What is the size of stock exhaust and outlet

[1995 gst]

My question is what size is the stock 1g exhaust and what size is the stock o2 manifold downpipe which connects to the exhaust.

 

[duecevr4]

i wanna say the stock exhaust pipe is like 1 7/8". The O2 outlet looks like 2.5". Not near the parts to measure, so can some1 else confirm?

 

[eclipsemf]

The stock exhaust size is 2.25" I know that and I think the 02 housing is as well but I'm not 100% sure.

 

[ChiTownHussla]

I thought itwas 2.25 throughout for stock

 

[1995 gst]

the 2g exhaust is that size but i was told the 1h is smaller, can anyone back anything up please?

 

[DROPthatCLUTCH]

My 1g is 2.25".

 

[Jazz]

I'm pretty sure 1g size is 2 1/8 inch. It's a weird size

 

[GRAVEDIGGER]

1g as well as 2g both were 2 1/4" from downpipe to muffler.

A quick search using the keywords "stock exhaust size" turned up these.
http://www.dsmtuners.com/forums/new...xhaust-size.html?highlight=STOCK+EXHAUST+SIZE

http://www.dsmtuners.com/forums/new...ock-exhaust.html?highlight=STOCK+EXHAUST+SIZE

 

[rcarbajal4]

Since this thread seems to be what I need to, can I bolt up my 2.5 dp (cat delete) to the rest of the piping without anything extra since the piping is 2.25? Would this be safe?

 

[Blu92]

My 92 gsx is 2 1/8". Bought a new flex pipe with an I.D of 2 1/4" and it was real loose. Had to get a piece of 2 1/4" O.D pipe to make sleeves so it would fit.