SLP Performance - 08-10 Challenger SRT-8 6.1L Hemi "Loud Mouth" (modular); use w/stock exhaust manifolds Now available from SLP is a Stainless Steel Modular Cat-Back Exhaust System for the 2008-10 Challenger 6.1L HEMI SRT-8. It is available in Loud Mouth™ and Loud Mouth II™ designs. Thanks to the modular design, either resonators or mufflers can be ordered individually and interchanged separately. These systems provide a noticeable performance gain of up to 12 horsepower and are designed using SLP's innovative modular technology. This enables customers the flexibility to change the performance and noise-level characteristics by switching from our bullet-style Loud Mouth™ resonators, to our quieter Loud Mouth II™ mufflers, in order to suit their individual requirements. Each system is constructed from 3" stainless steel mandrel-bent tubing for unrestricted flow with an integrated 3.0" PowerFlo-X™ crossover pipe that will bolt to the factory 2.75" down pipes. Re-use your factory Challenger Square Exhaust Tips. Easy bolt-on installation and all hardware and installation instructions are included, backed by SLP's Lifetime Warranty. NOTE: Designed to work with STOCK exhaust manifolds. If upgrading to our Long Tube Headers use part# D30008 (Headers) Loud Mouth™ cat-back exhaust system for 6.1L SRT-8 features: Stainless Steel 3" Mandrel-Bent Tubing Polished Loud Mouth ™ Resonators w/SLP's logo embossed in the body Integrated PowerFlo-X™ Crossover Pipe w/2.75" Inlet Factory Style Ball-Band Clamps included to re-use Factory Challenger Tips Easy, bolt-on installation (no welding required) All Hardware and Installation Instructions are included Covered by SLP's Performance Guarantee and Lifetime Warranty