Flowmaster - 50 Delta Flow® - 2.25 Offset In / 2.25 Offset Out - Moderate Sound 51 in Rectangle Port -

51 in Rectangle Port - Rubber - GM LS-Series - Each

Birdcage Bearing - 2

Main Bearing - Race Series - Standard - Extra Oil Clearance - Narrowed - Big Block Chevy - Kit

4 in Diameter - Various BMW Applications - Each

Flowmaster - 50 Delta Flow® - 2.25 Offset In / 2.25 Offset Out - Moderate Sound 51 in Rectangle Port -The three chamber design utilizes Flowmaster's Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.