On a Hellcat or a 392 the cast factory manifolds become the restriction long before anything else does. These XR-1 long tube headers replace them with 1.75 in. primaries feeding a 2.75 in. collector, which is the configuration Borla builds for drag and oval track use rather than for a street car. There is no X-pipe in the kit, so the rest of the mid-pipe has to be sourced or fabricated separately.

Borla XR-1 Raceline Long Tube Header Details:

• Fits 2015-2016 Dodge Challenger SRT Hellcat 6.2L V8 and SRT 392 6.4L V8, automatic or manual transmission, rear wheel drive, two door.
• Long tube header design supplied without an X-pipe.
• 1.75 in. outside diameter primary tubes with a 2.75 in. outside diameter collector.
• Built from austenitic stainless steel for track durability.
• For competition or off road use only. Not emissions, DOT, CARB or EPA certified, and not intended or applicable for use on public streets or highways.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART