AFE MACH Force XP 4" Stainless Cat Back Exhaust 06-07 GM 6.6L Duramax LLY / LBZ Tip Selection:No Exhaust Tip The BladeRunner GT features a

The BladeRunner GT features a much larger A/R housing

2% cumulative efficiency

dual 1/8" NPT exhaust gas ports are supplied for gauges or testing

No problem using this kit from Alliant

AFE MACH Force XP 4" Stainless Cat Back Exhaust 06-07 GM 6.6L Duramax LLY / LBZ Tip Selection:No Exhaust Tip The BladeRunner GT features aThe Mach Force XP Performance Cat Back exhaust features 4" stainless steel tubing with smooth curves and increased size to help remove restriction and keeps exhaust gasses flowing smoothly. The OE style band clamps and bayonnet style hangers make sure this system installs cleanly and easily. You will see increased performance and lower EGT's from this system. All aFe exhaust systems are engineered and manufactured in their Corona, California