4" Sidetube Slip-In Big Block Reverse Flow Muffler Hexagnal Includes gaskets and spacers

Includes gaskets and spacers

5) 4-bolt discharge turbine housing is perfect for small to medium displacement 4 cylinder engines

This style of fastening system includes force bars

IMU no longer needs to undergo calibration

4" Sidetube Slip-In Big Block Reverse Flow Muffler Hexagnal Includes gaskets and spacersFor 4" sidetube sound control, Hooker builds long lasting slip in mufflers. These mufflers are easily removed for racing purposes. This all metal reverse flow style muffler is for small block applications and is quieter than our glass pack style mufflers. Hooker mufflers produce a high level of sound control without restricting engine efficiency. Sold in pairs. Features: Fits 4" Side Tube systems Big Block Reverse Flow Design Easily Removed For Racing