The new CR Cam Series from COMP Cams is designed to greatly improve upon stock 2015 Coyote Camshafts and work without modifications to the engine's cylinder heads or phasers. COMP Cams 2015 Ford Mustang Coyote CR Series Camshafts are the first new Cam and core Series for 2015 and later Coyote engines. New lobes improve upon the 2011-2014 XFI Camshaft Series and feature faster ramps more lift and more area under the lift curve. The cams work with stock 2015 valve springs and the new Ford mid-lock phaser system without requiring limiters or any other phaser modifications. Three grinds are available for naturally aspirated engines with two designed specifically for blower Applications.