The Wilhelm Raceworks Y-Pipe for 2GR-FE swaps into the SW20 MR2 connects the V6 headers (on our site) to the Berk Technology muffler. 304 stainless steel TIG welded construction, with 2.25" pipes before the merge and 3" pipe after the merge. Includes stainless steel hardware for connection to both the headers and the muffler, as well as a gasket for the Y-pipe to muffler connection.. This Y-Pipe is intended for use in 2GR V6 swapped (SW20) MR2's when using the Berk dual exhaust system. This part is built to order and takes 1-2 weeks to ship from date ordered.