Our resonator deletes are designed to noticeably improve your exhaust note, whilst being a direct replacement for the OEM exhaust section making fitment easy & straightforward. Crafted from T304 stainless steel, our resonator deletes are made to last. ---Manufactured from high quality T304 grade polished stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing catalyst replacement to get the most from the iconic S55 engine ---Designed to improve power and torque across the entire RPM range ---To fit the OEM system and most aftermarket backboxes Compatible with: BMW M3 | F80 | 2012-2018 BMW M4 | F82/F83 | 2013-2020.
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