Performance Valve Springs and Retainer Kit Powerstroke 6.7 This is their famous street

This is their famous street setup / daily driver turbo that can still hook up to a trailer when it needs to

The XDP High Output 220 Amp Alternator almost doubles the factory output

Bring your Powerstroke back to life with the XDP 6

Restore proper operation of your 6

boost throttle response

Performance Valve Springs and Retainer Kit Powerstroke 6.7 This is their famous streetThe XDP Performance Valve Springs and Retainer Kit XD386 are a perfect upgrade for your modified 2001 2016 GM 6. 6L Duramax. Camshaft upgrades and other modifications that increase boost require more valve control. The XDP Performance Valve Spring feature a conical design for better valve control than a standard straight spring. The conical design also allows for smaller and lighter spring retainers. Each spring undergoes a stress relief process and