Pypes Exhaust SMC20S Street Pro 2-1/2" Diameter Stainless Steel Cat-Back Exhaust System with X-Pipe for Dodge Challenger V8 PYPES PERFORMANCE EXHAUST SMC20S 08- Challenger 5.7L 2.5i Cat Back Exhaust x/XPipe Dimensions in Inches (LxWxH): 60.5 x 60.5 x 16