Nozzle Set - 20% Over (Duramax 04.5-05 LLY)

Duramax 04.5-05 LLY Nozzle Set: 20 percent over, approximately 50 RWHP over stock. Nozzles can support up to 625-650 RWHP with proper supporting modifications. Safe on stock trucks. Excellent street manners and MPG.