Fabspeed McLaren MP4-12C Sport Catalytic Converters (2011-2014) hawk ht10 Install requires welding the filler

Install requires welding the filler neck and block off plate to the gas tank

creating an additional layer of protection that can hardly be felt

It's the kind of clean

Sold as a pair - 2 pairs required per car

Fabspeed McLaren MP4-12C Sport Catalytic Converters (2011-2014) hawk ht10 Install requires welding the fillerReplace the four restrictive factory OEM catalytic converters with two ultra high performance German HJS 200 cell sport cats for maximum performance and sound, and no check engine light guaranteed. Utilizing our two development McLarens, MP4 12C and a 570S, we've experimented with many designs and were able (after much testing and engineering) to craft the highest quality catted downpipes on the market. We are utilizing bullet proof, high flow 200