Welcome Enthusiasts of Porsche Air Cooled Hot Rods!

Pick a Website To Browse

Here you will find answers to all you performance exhaust needs and more. From 356 to 964 Turbo to 993 we offer light weight performance exhaust systems. Our made in the USA systems are crafted by master welders using premium materials that exceed the requirements for the application. You will not find inferior shiny junk here, only performance systems with a sound that is unmistakable high performance air cooled Porsche.
We also service and modify CIS. The 911 CIS Primer is an invaluable guide to help you understand, troubleshoot, and maintain your early fuel injection systems.

911 CIS Primer

Several years ago Jim Williams began documenting his research into the CIS 911 fuel system and graciously shared it with all enthusiasts. Jim has passed the torch on to us and we will continue his research and to offer this treasure of information to all.

RarlyL8 Motorsports

Got turbo fever? This is your site! RarlyL8 is M&K’s turbo division. Light weight performance exhaust systems for 930 and 965. Tuned headers, mufflers, zork tubes, bypass pipes, TiAL waste gates, turbos, you name it. We are the only manufacturer in the industry offering 321 stainless steel as standard on all of our systems. Our single outlet street muffler weighs in at 12 pounds! Headers system is less than 15 pounds! Three sound levels and four tailpipe configurations are available for a total of 12 muffler options for your 930.

M&K Exhaust

Performance exhaust systems for your 356,
912, 911, 964, and 993. We are the only manufacturer in the industry offering 321 stainless steel as standard on all of our systems. Our street performance muffler for Carrera weighs a scant 11 pounds! We have the most versatile line available with Single, Dual, 911S, 911R, Rally, GT3-Look, and GT3-S tailpipe configurations.