Designed to deliver maximum driving control, KYB's Gas-a-Just® High Performance Shocks provide a high performance ride. Gas-a-Just® High Performance shocks’ higher gas pressure keeps tires glued to the road while its superior strength monotube design with floating piston makes for fade-free performance and the seamless cylinders and eye rings provide durability. These high pressure gas charged shocks will give your Mustang a very firm ride and are designed to sense road conditions and adjust automatically. Not manually adjustable.