I have a 12 rgc and was wondering if the thunderheaders come with the bung holes for the close loop systems...im gonna go with the thundermax...thnx

 

Last I checked, if you go with a Thundermax, as I did, the T-Max requires the '09 style header with the bung holes near the motor vs. the right foot.

So that shouldn't be a problem with the Thunderheader, just make sure you order the right one. Or check with T-max to see if they have a more recent product.

 

I am the great Cornholio, I hail from lake Titikaka, I need TP for my bunghole. Yep you need earlier model pipes with the bungholes up near the heads. The 18mm bungholes. 1 bunghole per primary pipe, for a grand total of two each bungholes. Sorry I just find that word hilarious. I don't why the exhaust industry adopted the word bung for O2 ports, a bung is typically a plug for a barrel or drum or containment vessel, and the bunghole is what the plug fits into. Oh well whatever, I don't think you will need a bung wrench for the job. Good pipe choice if you don't mind the noise, curious to find out how it all works out.