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99 R1 exhaust diameter
tigris - 2/12/04 at 02:45 AM

Trying to piece together my exhaust system, anybody know the pipe size after the header? Thanks

tigris - 2/12/04 at 07:28 PM

Nobody? Well, does 50mm or 55mm sound best? Thanks

Rorty - 3/12/04 at 02:05 AM

38.1 OD x 1.6

Bo - 3/12/04 at 12:56 PM

It you are referring to the pipe after the EXUP valve where the headers joins up to one, it is 58mm inside.

The headers are around 40mm

Rorty - 3/12/04 at 08:17 PM

quote:
Originally posted by tigris
Trying to piece together my exhaust system, anybody know the pipe size after the header? Thanks

Sorry, I misread your post the first time. I thought you just wanted to know the primary pipe size, which is 38.1 OD x 1.6. The secondary pipe size is 50.8 OD x 1.6.
Part of the secondary may go up to 63.5 OD, but I can't remember for certain.