SPE Motorsport S550 & S650 Billet Differential Lockout System powerstroke engine components Fine-Tuned Adjustability: Fine-tune your Mustang's

Fine-Tuned Adjustability: Fine-tune your Mustang's performance with 1/4" increments of adjustability

When this happens to an aftermarket kit (not an if but when) you have to get another set of uppipes

Billet Center section

pleat bleed is when the rubber bleeds into the actual filter material

The stamped mild steel is one of the leading causes of the deterioration of not only the housing but the rubber as well

SPE Motorsport S550 & S650 Billet Differential Lockout System powerstroke engine components Fine-Tuned Adjustability: Fine-tune your Mustang'sSPE Motorsport S550 & S650 Billet Differential Lockout System The stock rubber bushings are great for absorbing noise, vibration, & harshness (NVH), but do nothing for performance applications. Eliminate wheel hop by adding the SPE Motorsport S500 & S650 Billet Differential Bushing Kit for the super 8. 8 S550 rear end. This kit solidly mounts the rear end to the cradle. They install on top of the factory bushings allowing for a non permanent install.