Performance Valve Springs and Retainer Kit Cummins 6.7 This can be hard on

This can be hard on a turbo and motor and is not recommended

Even in mild builds

this unit is built to meet OEM specifications

resulting in a more even clamping force which allows you to obtain a more accurate torque reading

the common rail diesel injection experts

Performance Valve Springs and Retainer Kit Cummins 6.7 This can be hard onThe 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