XJ XJ8 / XJR ( X308 ) 1997 - 2003

Exhaust pipe diameter XJ8 vs. XJR

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Old Aug 4, 2022 | 12:05 PM
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Default Exhaust pipe diameter XJ8 vs. XJR

Rock Auto shows different part numbers for XJ8 vs. XJR mufflers, so I assume the diameters are different. Anyone know the exhaust pipe diameter for each? I assume it is consistent all the way from the exhaust manifolds.
 
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Old Aug 5, 2022 | 06:55 AM
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I know that the XJR diameter is 58mm / 2.25 inches - I just bought some replacement tips so I'm sure of that.. The XJ8 is smaller - I think it's 50mm / 2 inches but don't take my word for it.
 
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Old Aug 6, 2022 | 12:46 PM
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Both exhausts are the same. Just the muffler tips are different. Most of the exhaust is 2" and less at the bends.
 
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Old Aug 6, 2022 | 01:08 PM
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Yes 'tis true. The circumference is 6 and 1/2 inches, thus the OD is roughly 2.07 inches.
 
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