48in Extension

The 48in Extension from SCHOENFELD is a straight exhaust pipe extension engineered for custom exhaust systems and performance modifications. This 4-foot extension is designed for builders and mechanics who need to route exhaust safely away from critical engine bay components, suspension parts, or custom chassis layouts. Whether you're fabricating a show car exhaust system, extending a header exit for mid-engine applications, or adapting OEM piping to a modified frame, this extension provides the length and diameter needed for proper exhaust flow and clearance.

Constructed from durable steel in natural finish, the 48in Extension measures 3.25 inches in outer diameter and weighs 5.35 lbs, making it substantial enough for high-temperature exhaust duty while remaining manageable for installation and welding. The expanded end design allows for either slip-fit coupling to downstream components or direct welding to custom piping, giving fabricators flexibility in their assembly approach. Steel construction ensures thermal stability and longevity under continuous exhaust exposure, while the straight configuration maintains consistent diameter and flow characteristics for optimal scavenging without turbulence or restriction.

This extension is ideal for custom exhaust fabricators, race car builders, and automotive enthusiasts undertaking engine swaps or chassis modifications where factory exhaust routing is impractical. The 3.25-inch diameter accommodates most header and mid-pipe applications from small-block to big-block configurations. Installation requires basic welding or slip-fit connection; ensure all connections are sealed and supported with proper exhaust hangers to prevent vibration-related failure. Pair this extension with appropriate mufflers, resonators, or dump tubes to complete your custom exhaust system.