The COMP Cams Stage 1 XFI SPR Camshaft is a premium aftermarket camshaft designed to bestow outstanding idling and excellent torque. Utilizing COMP Cams' state-of-the-art camshaft technology, the Stage 1 XFI SPR (Springs and Phaser Mods Required) can be used for naturally aspirated and supercharged engines. Available in three performance levels, the Stage 1 XFI SPR generates solid power gains above 4500 rpm and can be integrated as direct replacement components for modified Ford variable cam timing (VCT) systems. The COMP Cams Stage 1 XFI SPR Camshaft is efficient when used in 2005-2010 GT Mustangs that have a naturally aspirated 4.6L 3V Engine. The Stage 1 XFI SPR Camshaft is designed to provide the largest power and torque upgrades of any cam series ever tested in the Ford Modular 3V engine. The exceptional performance of the Stage 1 XFI SPR Camshaft is the result of COMP Cams' methodical design and keen attention to detail during the manufacturing process. All camshafts produced by COMP Cams answer only to the highest standards and are thoroughly tested to ensure a reliable and long-lasting solution.

Competitions Cams, Inc., commonly known as COMP Cams, is a world-leading aftermarket automotive parts manufacturer. COMP Cams was founded in 1976 and then incorporated in 1977. COMP Cams' headquarters is established in Memphis Tennessee and they also have five manufacturing locations spread across the United States. COMP Cams began building a name for itself by selling valve train products via satellite distribution stores. Over the years, COMP Cams has acquired several companies that manufacture transmissions, electronic fuel injection, and nitrous oxide. As of today, COMP Cams comprises a total of 13 companies with hundreds of employees. The company is a major mover in the automobile industry, developing superior and state-of-the-art techniques and methodologies that have become a standard in various competitions such as NASCAR. The technological advancement and innovations enable COMP Cams to manufacture premium aftermarket performance parts that are compatible with leading high-performance vehicles. COMP Cams' products are also the go-to brand of hot-rod enthusiasts, engine builders, and professional racers.