96-98 Mustang X-Pipe w/Cats

The 96-98 Mustang X-Pipe w/Cats from PYPES Performance Exhaust is engineered for third-generation Mustang enthusiasts seeking improved exhaust flow and emissions compliance. This component serves as the critical mid-section of a performance exhaust system, connecting your headers to the rear axle section while maintaining catalytic converter functionality. If you're building a street-legal modified Mustang that demands both power gains and legal operation in emissions-testing states, this X-pipe delivers the balance between performance and practicality.

An X-pipe configuration uses dual crossover tubes that merge exhaust gases from both cylinder banks before splitting to the rear axle pipes, creating scavenging effects that enhance volumetric efficiency across the powerband. PYPES integrates high-flow catalytic converters into this design, preserving the scavenging benefits while meeting emissions standards—critical if your vehicle faces dyno testing or annual inspections. The mandrel-bent tubing maintains consistent diameter throughout, minimizing turbulence and backpressure that would otherwise choke your engine's breathing. Weighing 29 lbs and engineered to OEM packaging dimensions, this X-pipe bolts directly into your existing mounting points without modification to headers, pan, or rear sections.

Street-driven 96-98 Mustang owners with naturally aspirated 4.6L or 5.0L mills benefit most from this upgrade, especially those running stock or mild header combos seeking mid-range torque improvements without fabrication headaches. Installation requires support of the engine and removal of the stock H-pipe; no welding is necessary if used with compatible headers and rear axle pipes. Verify your header flange diameter and rear axle pipe inlet size before ordering to ensure seamless fitment in your exhaust flow path.