AMG 55/63

5.5L   M113K  $3995 complete w/ Ultra Light Spring Kit &                    Oversize Stainless Steel Valves

5.5L   M155

5.5L   M157

6.3L   M156

6.3L   M159


Call for options and pricing, all heads are custom built to customers specifications.


Customer Cores required


Our Custom Ultra Light Valve Spring Kit for the M113K platform is a must have for those demanding only the best in performance and quality. The ability to rev faster with higher spring pressures makes these a key ingredient in your quest for power.


Mercedes Benz AMG Series Heads

The Mercedes Benz AMG Series heads, these factory supercharged powerplants will see huge horsepower gains unlike any other with our heads! Available through Xtreme CFM, done up the way we know best, to provide you with the most power producing head out there!


Only available exclusively through Xtreme CFM.


All xtreme cfm cylinder heads have gone through extensive research and development to provide you with the most powerful "out of the box" heads available on the market.


In development, our main objective was to provide the highest flow possible without ever sacrificing air speed in order to achieve it and staying within strict sizing constraints of each port. Not just emphasizing on flow alone, all aspects of the port were addressed with proper port shape, velocity, cross section and volume, with the end result of an extremely efficient head.


A close up look at our Ultra Light Titanium retainers.

Our Custom Oversized Stainless Steel valves for the M113K, these valves are designed to go with our Ultra Light Spring Kit.

m113k ported heads

m113k titanium retainers m113k valve spring kit