4" Sidetube Slip-In Big Block Reverse Flow Muffler Hexagnal IMU no longer needs to

IMU no longer needs to undergo calibration

which provides a hard

This style of fastening system includes force bars

please note stock knock sensors are highly unlikely to be utilized under any type of after market tuning situations and deemed unnecessary

Fitting: Mitsubishi EVO 4/5/6 Front

4" Sidetube Slip-In Big Block Reverse Flow Muffler Hexagnal IMU no longer needs toFor 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