{"product_id":"bmw-b58-f-chassis-downpipe","title":"BMW B58 (F-Chassis) FATBOY 5\" Downpipe","description":"\u003cp\u003eThe HARPIA Performance Parts FATBOY 5 inch Downpipe for BMW B58 is designed to maximize exhaust flow and unlock the full potential of your B58 engine. This high-performance catless downpipe replaces the restrictive OEM downpipe with OPF, significantly reducing back pressure, improving turbo spool, increasing power and delivering a deeper, more aggressive exhaust sound. Manufactured from high quality stainless steel with precision TIG welds, it features a 5 inch (127 mm) diameter for maximum flow and durability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCatless design (no catalytic converter)\u003c\/li\u003e\n\u003cli\u003e5 inch (127 mm) FATBOY diameter\u003c\/li\u003e\n\u003cli\u003eSignificantly reduced back pressure\u003c\/li\u003e\n\u003cli\u003eImproved exhaust flow and faster turbo spool\u003c\/li\u003e\n\u003cli\u003eMore power and enhanced exhaust sound\u003c\/li\u003e\n\u003cli\u003eHigh quality stainless steel construction\u003c\/li\u003e\n\u003cli\u003ePrecision TIG welds\u003c\/li\u003e\n\u003cli\u003eDirect replacement of the OEM downpipe (with OPF)\u003c\/li\u003e\n\u003cli\u003eRigorously tested for quality and durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Compatibility:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBMW B58 with OPF filter: M140i, M240i, 340i, 440i, 540i — all variants with B58 engine and OPF\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e1 × FATBOY 5 inch Downpipe (Catless)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 6-month HARPIA Performance Parts warranty. Covers manufacturing defects.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNote: this listing currently shares specs with our G-Chassis FATBOY downpipe pending F-chassis-specific confirmation — please contact us with your VIN to confirm exact fitment.\u003c\/em\u003e\u003c\/p\u003e","brand":"Harpia Performance","offers":[{"title":"Default Title","offer_id":59017090335052,"sku":null,"price":400.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0961\/4435\/9756\/files\/89767398-3EC0-4D88-BB40-E8745BAFE6E9.png?v=1790850387","url":"https:\/\/shop.harpiaperformance.com\/en-bg\/products\/bmw-b58-f-chassis-downpipe","provider":"Harpia Performance","version":"1.0","type":"link"}