We have ventured out and decided to produce our own exhaust line (AW1). Our McLaren Downpipes come standard in 3.5" 321 stainless steel (vs competition at 3" 304ss) with the option to upgrade to Inconel (please contact for pricing). All of our downpipes are 3.5" diameter while necking down to a ball joint at the end of the downpipe to 3". We decided to go this route in the design in order to retain the OEM clamps as well as give customers the opportunity to run our downpipes and pair them with an existing rear section that shares the same size on the joint.
Our Downpipes for the 12c, 570s, 600LT, 650s, 675LT come standard with a Bronze Cerakote Ceramic thermal coating. The ceramic coating can withstand heat upwards to 1825F! If you would like our downpipes without the ceramic coating it is available upon request. On top of the ceramic coating we also wrap the downpipes with titanium heat wrap which is rated to withstand temperatures up to 2500F
Our Catted version of the AW1 Downpipes feature HJS HD 200 cell catalyst, HJS is known to be the leader in industry which is why we decided to use them in all of our catted applications!