COMP's Cam Phaser Limiter Kit is the first such device on the market that does not take "the easy way out" by locking the cam phaser in place like competitive systems, which then reduces the power potential of the engine. The COMP Cams Cam Phaser Limiter Kit retains the engine's maximum low rpm power without sacrificing top end performance. The kit includes two limiter plates, one for each cam phaser, and the tools required to install and disassemble the cam phaser. COMP Cams offers a full line of naturally aspirated and supercharged cams (XFI SPR Cams) that are designed to work perfectly with this kit to deliver gains of 50+ horsepower, without sacrificing bottom end or mid range performance.