Diamond Eye - GM Duramax LLY

Diamond Eye Performance offers the latest in performance diesel exhaust systems the market has to offer. We have a full line of complete 4-Inch and 5-Inch exhaust kits for Ford, Dodge and Chevy available in heavy duty 16-gauge aluminized steel or T409 stainless steel. We also carry a full line of stainless steel tips and other accessories to give you the performance and sound that you're looking for. Each kit includes easy to follow step-by-step instructions and and everything needed for a complete installation from start to finish.


  • Increased Horsepower
  • Aggressive Sound
  • Lower EGT's
  • Better Fuel Economy
  • Mandrel Bent Tubing
  • Stainless Systems (6 Year Warranty)
  • Aluminized Systems (1 Year Warranty)
  • 4" and 5" Systems Available