Greddy/TRUST Stainless Steel O2 extension for S13 or S14 SR20DET. TRUST extension separates the wastegate and exhaust flow by adding a divider plate to reduce turbulence in the exhaust stream. The downpipe tunnel outlet measures 2-5/8" which is much bigger than stock.

Unlike all other stainless SR extension knock offs, TRUST unit is that will yield the most power because this is the only unit that has the divider plate concept built into the extension. Perfect for all SR swap as there are no AIV hole to plug up. Comes with all hardware and gaskets for install.

Great Upgrade for 10-15hp with noticeable engine / turbo response.