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Old 12-31-2020, 08:27 AM   #1
zx9rmal
 
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Stock exhaust

What is the diameter of the stock exhaust pipes on the ZL1? Search and google were no help.

Thanks.
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Old 12-31-2020, 08:33 AM   #2
JSH


 
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Quote:
Originally Posted by zx9rmal View Post
What is the diameter of the stock exhaust pipes on the ZL1? Search and google were no help.

Thanks.
Of each pipe or the exhaust port?
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Old 12-31-2020, 10:06 AM   #3
laynlo15
 
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I think they are either 2.75 or 3 inch.
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Old 12-31-2020, 10:07 AM   #4
swisstyphoon
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Quote:
Originally Posted by zx9rmal View Post
What is the diameter of the stock exhaust pipes on the ZL1? Search and google were no help.

Thanks.
It depends were you measure.
All OD's:
Downpipe left 2"
Downpipe right 2.16"
Cat connection pipe left 2.36"
Car connection pipe right 2.44"
Outlets 2nd cat 2.67"
Inlet Flex joints 2.44"
X-Pipe inlets 2.67"
Rear pipes (in front of crushed piece) 2.75"
Inlets Muffler 2.44"
Tail pipes 2.36"
Exhaust tips 4.2"
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Old 12-31-2020, 10:27 AM   #5
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Put true uncrimped 3"
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Old 12-31-2020, 04:17 PM   #6
zx9rmal
 
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Sorry. Should have said from downpipes back. Seems like there’s all kinds of variations because of what’s under there. Not as big as I thought they would be
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