ZZP Stainless HHR SS Catback Exhaust Muffler Option:Muffler Delete It features an offset inlet

It features an offset inlet design that eases installation and includes a wiring harness

plus 75% meth or e85

2021 Update: Introducing the XP-RPM cam

In order for this to fit on a supercharged base model (2

This is an upgraded clutch for 2011-2014 models (Sonic/Cruze)

ZZP Stainless HHR SS Catback Exhaust Muffler Option:Muffler Delete It features an offset inletStainless steel Mandrel bent ZZP resonator (Optional) ZZP chambered muffler or muffler delete pipe Hangers in all OEM locations Includes all required clamps and gasket Direct bolt in when used with our 3" exit downpipe This exhaust only fits the "SS" rear bumper cover.