MGS Trailer Products signs on to sponsor Modifieds MGS Trailer Products Division has signed on to sponsor the Modifieds at Linda’s Speedway. MGS services and sells open, enclosed and custom trailers, trailer parts and trailer accessories for businesses, landscapers, contractors, concessionaires, outdoor sportsmen and hobbyists. MGS is located in Denver and builds specialty equipment trailers that are highly engineered, customized solutions for any type of transportation challenge. Unlike many in the industry, MGS focuses on creating the best total solution for your transportation needs. Every MGS project starts with the same question: "How can we best accomplish our customer's goal?" In 2019 the Xcel 600 Modifieds will compete in 18 races including five tour events. The tour events will count toward a Poker Series card set.