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Our Mazda MX-5 Mk1 1.8 Decat Pipe replaces the standard restrictive catalytic converter with a single piece decat pipe allowing for improved exhaust gas flow, increasing horsepower and improving throttle response in the process.Features:Manufactured from T304 stainless steel2" boreTIG welded, CNC machined flangesDirect replacement for standard itemSupplied with gaskets and boltsPlease note: sold for off road and track use only (will not pass an MOT test when fitted).