Main Post Partners, a private equity firm, completed the investment in Mishimoto, an engineering firm specializing in performance automotive products. Financial terms were not disclosed. "Main Post Partners' extensive experience working alongside founders to build best-in-class consumer brands, coupled with their industry knowledge and deep understanding of the Mishimoto brand made the decision to bring them on as a partner an easy one. Main Post's investment will allow us to drive further brand awareness, accelerate new product development and add additional resources to support our valued customers and channel partners," Michael Sullivan, Mishimoto Founder and CEO.