Fits all for 2011-2020 Dodge Challengers and Chargers;95-durometer polyurethane bushings;Laser cut ?-inch plate steel with a durable powdercoat finish;Black anodized 6061-T6 aircraft-grade billet aluminum spacers;Grade-8 hardware;Reduced engine deflection;Better throttle response;Quicker reaction times;More accurate shifts (manual-equipped cars) ;Engine can be easily lowered up to a 1/2-inch for more under-hood clearance;Designed for street performance, drag race, and road race applications;Designed to work well with any power level;2-3 hour installation time;Proudly designed in the U.S.A.;Proudly made in the U.S.A.