DHD Duramax Dry Block Fire Ring Set .090" Steel

These steel fire rings from DHD are designed to be used in conjunction with dry blocks, graphite head gasket Duramax engines. These are for extreme engine builds with horsepower targets above 1500HP. Precision block machining is required. 

Specs:

• 4.310" Inside Wire Diameter
• .090" Cross Section
• Welded Hoop
• Mild Steel
• Use with DHD 800-GHG60NC-SET Head Gaskets