Evo-X headers made from 316L stainless steel and the mandrel-bent pipes feature CMI's patented Cool Collar design. They were developed to be direct replacements for the aluminum headers that come on Mercury Racing's quad-overhead cam engines and come complete with all hardware and required brackets. They even work with existing tailpipes. In addition to being able to withstand more heat, the stainless-steel Evo-Xs will survive better in salt water. Retail price is $16,900 per set. Get more information at www.custommarine.com.