SI Motorsports Inc. uses years of knowledge gained from the racing circuit to produce some of the most high end Trophy Prerunners and suspension systems available today. At SI Motorsports Inc., the main goal is to provide a product that is designed and engineered to last for years to come. Suspension geometry and a thorough understanding of aircraft grade materials are coupled with meticulous fabrication ability to ensure customers are not wasting their time or money on vehicles that fail to perform. To ensure the utmost attention to detail, SI Motorsports Inc. only builds one vehicle at a time. Building one vehicle at a time eliminates the oversights that are common from mass production and results in a vehicle that is fabricated and assembled with perfection in mind.