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For the Steel version you will need at least two bushings installed in the cam tunnel
Elevate your Cummins valvetrain with these improved-casting rocker arms
A modified or dual CP3 and upgraded turbo(s) are mandatory along with custom tuning
With an independently tested and verified tensile strength of over 231
5-05 LLY Injector Set: Brand new Clean Custom injector set
2015.5-2016 Duramax LML 5" Downpipe Back Exhaust No Muffler (531008) Color:Aluminized For the Steel version you2015. 5 2016 Duramax LML 5" Downpipe Back Exhaust No Muffler (531008) 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 Flo~Pro system. For powerhouse performance, Flo~Pro delivers horsepower you can hear!