Developed with a little help from the Miss GEICO Offshore Racing team, CMI’s Evo-X headers for Mercury Racing’s 1100, 1350, 1550 and 1650 engines are available now. The new 316L stainless steel, mandrel-bent headers boast CMI’s patented Cool Collar design and are targeted to be direct replacements for the aluminum headers that come stock on Mercury Racing’s popular quad overhead cam powerplants.
For a closer look at CMI’s Evo-X headers check out the slideshow above.
“The Evo-X headers were developed to enhance engine endurance—they weren’t developed to make more power,” said Chris Morth, CMI’s sales manager. “In a nutshell, the 316L stainless-steel material gives the headers the extra integrity to withstand excess heat in the event a water hose blows off or something else like that happens and the engine is starved for water. Stainless steel melts at a higher temperature than aluminum. And saltwater is a lot harsher on aluminum than stainless steel.”
The first high-performance pleasure-boat installation of Evo-X headers is happening now with a set of Mercury Racing 1350 engines going into a new MTI catamaran at the company’s Wentzville, Mo., facility.
Editor’s Note: Look for a more detailed story on CMI’s Evo-X headers, as well as the company’s Sport Tube and E-Top 520 headers, in the upcoming issue of Speed On The Water digital magazine, which will go live next week.