2019 Powerstroke 6.7L 4" Cat & DPF Race Pipe w/ Muffler (421036)2019 Powerstroke 6. 7L 4" Cat & DPF Race Pipe w Muffler (421036) Constructed out of 16 gauge aluminized steel or T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers horsepower you can hear!

9L Hamilton Cams Over Sized Valves (07-h-002)

2006-2010 Duramax LBZ/LMM Standard Xcelerator (1110200)

560” or 4

Gen 3 Hemi’s and Sport Compact engines

Gasket & Groove Specifications

Increased Zinc & Phosphorus: Precisely raises ZDDP levels for improved cam and lifter longevity

60 percent over nozzles

Enough fuel to support a maximum of 420 RWHP with proper supporting modifications

this is the most important addition after injectors tuning and turbo

Modified or dual CP3 and pyrometer mandatory

This kit prevents any premature EGR failures from causing damage to your engine

This turbocharger features HFV technology