aFe Magnum FORCE CAIS Spare Parts Kit (3.875in - 3.5in ID x 2.5in L) Straight Reducing Coupler-Blk

The high temperature 2-PLY reinforced silicone reducer coupler is designed to connect to a (3.90" x 3-1/2") OD tube and is 2-1/2" long. Standard stainless steel worm-gear #056 and #064 clamps provides tight connections, durability and is corrosion resistance for industrial, commercial, truck, off-road and racing applications.