{"product_id":"milltek-secondary-catalyst-bypass-bmw-m3-m4-2021-g80-g82-ssxbm1341","title":"Milltek Secondary Catalyst Bypass - BMW M3\/M4 2021+ (G80\/G82) - SSXBM1341","description":"\u003cp\u003eMilltek Axle Back Secondary Catalyst Bypass for the BMW G8X M3 and M4 (S58). Mandrel-bent T304L stainless steel construction with a non-resonated 102mm single mid-pipe and X-pipe configuration, engineered to remove secondary catalyst restrictions post-turbocharger for improved turbo efficiency and mid-range response. Direct bolt-on to either the OE axle-back or the Milltek axle-back with no modification required.\u003c\/p\u003e\n\u003cp\u003eKey Features:\u003c\/p\u003e\n\u003cp\u003eMandrel-bent T304L stainless steel with hand-finished welds\u003c\/p\u003e\n\u003cp\u003e102mm bore non-resonated X-pipe design, optimized for track and closed-course use\u003c\/p\u003e\n\u003cp\u003eUses OE mounting points and hangers - no modification needed\u003c\/p\u003e\n\u003cp\u003eTUV tested for durability\u003c\/p\u003e\n\u003cp\u003eFits: 2021+ BMW M3 \u0026amp; M4 Competition (G80\/G82, S58 engine)\u003c\/p\u003e","brand":"Milltek","offers":[{"title":"Milltek Axle-Back","offer_id":48538851541131,"sku":"SSXBM1341","price":1236.92,"currency_code":"USD","in_stock":true},{"title":"OE Axle-Back","offer_id":48538851573899,"sku":"SSXBM1342","price":1228.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/5084\/8395\/files\/milltek-ssxbm1341-bmw-m3-m4-g8x-secondary-cat-bypass.jpg?v=1784656420","url":"https:\/\/gbmotorsstore.com\/products\/milltek-secondary-catalyst-bypass-bmw-m3-m4-2021-g80-g82-ssxbm1341","provider":"GB Motors Store ","version":"1.0","type":"link"}