Red Hot Glasspack Muffler - 2.25in

The Red Hot Glasspack Muffler by Flowtech is a 2.25-inch performance exhaust component designed for street enthusiasts and weekend warriors looking to unlock genuine horsepower while delivering signature muscle car acoustics. This muffler is particularly beneficial for naturally aspirated engines where back-pressure management and unrestricted exhaust flow are priorities.

The glasspack design features a perforated internal tube surrounded by fiberglass packing to absorb sound frequencies while minimizing flow restriction. This proven design balances acoustic character with measurable scavenging benefits on both carbureted and fuel-injected engines. The compact 2.25-inch diameter allows for seamless integration into tight underbody configurations.

Ideal for builders restoring classic vehicles or modifying modern platforms, this muffler provides flexible installation options for custom mandrel-bent piping runs. Its lightweight 6.14-pound construction reduces unsprung weight compared to traditional chambered or turbo-style mufflers, making it a great choice for vintage restorations and dedicated track cars.