When it comes to undercarriage parts for light, medium and heavy duty vehicles, nobody beats Triangle. With more then 25,000 springs, suspensions and brake parts, Triangle covers the widest range of on-highway and special......When it comes to undercarriage parts for light, medium and heavy duty vehicles, nobody beats Triangle. With more then 25,000 springs, suspensions and brake parts, Triangle covers the widest range of on-highway and specialty vehicle applications. The Triangle line-up of products - Flagg Suspension Parts, Triangle Springs, Leland Brake & Wheel Parts, Triangle Air Springs, and TMR Spring Brakes are established, respected names in the market. Each brand services a unique segment of the vehicle, while together they form a team that is unsurpassed in undercarriage product support. All Triangle products are guaranteed, period. Plus, Triangle utilizes only one set of specifications and makes superior"OE" and "Aftermarket" product. Why settle for less? From the simplest product interchange, to specing a new suspension system, Triangles technical support staff is available to assist you.