The Diamond Eye Performance 51" Big Dog Quiet Tone Muffler is a exhaust component designed for 1983–2026 applications running the 5.9L Cummins or 7.3L Powerstroke.
Designed to reduce backpressure and increase exhaust flow over the factory system. Manufactured from mandrel-bent tubing for consistent inner diameter throughout, improving scavenging and lowering exhaust gas temperatures under load.
Verify fitment against your specific year, engine, and cab/bed configuration before ordering.