The XDP Billet Rocker Arm Valve Bridge Set is constructed from hardened 4140 chromoly for durability and are then nitride coated to provide additional protection and friction reduction. Sold as a set, these rocker arm bridges are the perfect upgrade to your Duramax truck. The stock rocker arm bridges were engineered for stock output levels, the added load and stress from a modified engine can rapidly exceed the power that the rocker arm bridges can handle.
- Sold as a complete set
- Nitride coating
- Billet 4140 chromoly construction
- Designed for stock rocker arms only