Product Description
5 Layer fiberglass reinforced silicone so it will never collapse under vacuum. This is the highest quality silicone coupler you can buy. 1.5" leg on the 4" side, 2.5" leg on the 3.5" side.
Note: This is the same coupler we supply in our Evo X turbo kits for use with aftermarket 3.5" Cold Air Intake Kits as an option for use on turbos with 4" compressor inlets.
