Upgrade the valves in your Duramax to these premium stainless intake/inconel exhaust valves, nitride coated and swirl polished for lasting quality ...

KDD can port your heads, KDD can even develop new ports for new engines through our custom induction program! For most engines porting will start o...

Description OEM 3.900 Stroke No crank gear included Dual Damper Keyways Conservatively rated for 800HP Machined from 4340, through hardened steel ...

Mahle Clevite camshaft bearing set for 2001-Present GM 6.6 Duramax engines.

BD's FleX-Plate is designed to reliably handle up to 1,500 lb-ft of torque. These units are forged billet, precision-balanced and SFI approved for ...

Protect your truck with the technology high power diesel OEMs use. A Fluidampr performance diesel damper provides premium, broad range control of d...

The affordable Wagler Duramax As-forged Street connecting rods are the perfect solution for a hot street truck making 1,000 HP or less. The as-forg...

KDD is proud to present our exclusive line of Jesel rocker arms for the 6.6L GM Duramax.  We had the honor of working with the world renowned valve...