The MagnaFlow Redpack 4in Round Glasspack Performance Exhaust Muffler 13129 features the same classic deep sound and dynoproven performance of our other glasspack mufflers with the additional flair of a stylish yet timeless red finish 13129s 3/3in round body and reversible straightthrough universal design can be integrated into your vehicles exhaust system however you see fit although professional installation is recommended Check to ensure compliance with local noise regulations This freeflowing muffler is engineered to add a dose of hot rod fury to your ride 13129 features durable corrosion resistant aluminized steel construction and is produced using cuttingedge CNC precision robotic manufacturing techniques all backed by MagnaFlows 90day limited construction warranty