{"product_id":"milltek-cat-back-exhaust-bmw-3-series-g80-m3-m3-competition-s58-3-0-turbo-2021","title":"Milltek Sport Cat-Back Exhaust - 2021+ BMW 3 Series G80 M3 \u0026 M3 Competition S58 3.0 Turbo","description":"\u003cp\u003eUpgrade the BMW 3 Series G80 M3 \u0026amp; M3 Competition S58 3.0 Turbo (2021+) with a Milltek Sport cat-back exhaust. Milltek builds each system around the car it fits: mandrel-bent T304L stainless pipework, a larger bore than stock for freer flow, and a tuned sound you choose, from quiet and refined to loud and uncorked.\u003c\/p\u003e\u003ch3\u003eChoose your setup\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound:\u003c\/strong\u003e the system type and sound level.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip Finish:\u003c\/strong\u003e the tailpipe trim.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Downpipe:\u003c\/strong\u003e add a Milltek catted or catless downpipe built to fit this cat-back. Pick Cat-Back Only to skip it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCat-back systems: compare every part number\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eSound\u003c\/th\u003e\n\u003cth\u003eTip finish\u003c\/th\u003e\n\u003cth\u003ePipe size\u003c\/th\u003e\n\u003cth\u003eFit time\u003c\/th\u003e\n\u003cth\u003eRace\/Track only\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1169\u003c\/td\u003e\n\u003ctd\u003eAxle Back System\u003c\/td\u003e\n\u003ctd\u003ePolished GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1170\u003c\/td\u003e\n\u003ctd\u003eAxle Back System\u003c\/td\u003e\n\u003ctd\u003eCerakote Black GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1171\u003c\/td\u003e\n\u003ctd\u003eAxle Back System\u003c\/td\u003e\n\u003ctd\u003eBrushed Titanium GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1172\u003c\/td\u003e\n\u003ctd\u003eAxle Back System\u003c\/td\u003e\n\u003ctd\u003eBurnt Titanium GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1173\u003c\/td\u003e\n\u003ctd\u003eAxle Back System\u003c\/td\u003e\n\u003ctd\u003eJET-115 Carbon\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1317\u003c\/td\u003e\n\u003ctd\u003eSecondary Cat Back System with Centre Resonator Bypass\u003c\/td\u003e\n\u003ctd\u003ePolished GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1318\u003c\/td\u003e\n\u003ctd\u003eSecondary Cat Back System with Centre Resonator Bypass\u003c\/td\u003e\n\u003ctd\u003eCerakote Black GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1319\u003c\/td\u003e\n\u003ctd\u003eSecondary Cat Back System with Centre Resonator Bypass\u003c\/td\u003e\n\u003ctd\u003eBrushed Titanium GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1321\u003c\/td\u003e\n\u003ctd\u003eSecondary Cat Back System with Centre Resonator Bypass\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber JET-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1320\u003c\/td\u003e\n\u003ctd\u003eSecondary Cat Back System with Centre Resonator Bypass\u003c\/td\u003e\n\u003ctd\u003eBurnt\/Blue Titanium GT-115\u003c\/td\u003e\n\u003ctd\u003e3.15\" (80.00mm)\u003c\/td\u003e\n\u003ctd\u003e1.50 to 2.00 hours\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eWhat comes with each cat-back\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1169\u003c\/strong\u003e: 2 x Adapters to OE GPF\/OPF; 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Rear Silencer; 4 x Polished 4.5\" Trims; 115 GT Milltek note: Axle Back System with GT-115 Polished Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1170\u003c\/strong\u003e: 2 x Adapters to OE GPF\/OPF; 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Rear Silencer; 4 x Cerakote Black 4.5\" Trims; 115 GT Milltek note: Axle Back System with GT-115 Cerakote Black Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1171\u003c\/strong\u003e: 2 x Adapters to OE GPF\/OPF; 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Rear Silencer; 4 x Titanium 4.5\" Trims; 115 GT Milltek note: Axle Back System with GT-115 Brushed Titanium Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1172\u003c\/strong\u003e: 2 x Adapters to OE GPF\/OPF; 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Rear Silencer; 4 x Burnt Titanium 4.5\" Trims; 115 GT Milltek note: Axle Back System with GT-115 Burnt Titanium Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1173\u003c\/strong\u003e: 2 x Adapters to OE GPF\/OPF; 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Rear Silencer; 4 x Carbon Fibre 4.5\" Trims; 115 JET Milltek note: Axle Back System with JET-115 Carbon Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1317\u003c\/strong\u003e: 1 x LH Silencer Bypass (to OE GPF); 1 x RH Silencer Bypass (to OE GPF); 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Chassis Brace Plate; 1 x Rear Silencer; 4 x Polished 4.5\" Trims; 115 GT Milltek note: Secondary Cat Back System with Centre Resonator Bypass \u0026amp; GT-115 Polished Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1318\u003c\/strong\u003e: 1 x LH Silencer Bypass (to OE GPF); 1 x RH Silencer Bypass (to OE GPF); 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Chassis Brace Plate; 1 x Rear Silencer; 4 x Cerakote Black 4.5\" Trims; 115 GT Milltek note: Secondary Cat Back System with Centre Resonator Bypass \u0026amp; GT-115 Cerakote Black Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1319\u003c\/strong\u003e: 1 x LH Silencer Bypass (to OE GPF); 1 x RH Silencer Bypass (to OE GPF); 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Chassis Brace Plate; 1 x Rear Silencer; 4 x Titanium 4.5\" Trims; 115 GT Milltek note: Secondary Cat Back System with Centre Resonator Bypass \u0026amp; GT-115 Brushed Titanium Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1321\u003c\/strong\u003e: 1 x LH Silencer Bypass (to OE GPF); 1 x RH Silencer Bypass (to OE GPF); 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Chassis Brace Plate; 1 x Rear Silencer; 4 x Carbon Fibre 4.5\" Trims; 115 JET Milltek note: Secondary Cat Back System with Centre Resonator Bypass \u0026amp; JET-115 Carbon Fiber Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1320\u003c\/strong\u003e: 1 x LH Silencer Bypass (to OE GPF); 1 x RH Silencer Bypass (to OE GPF); 1 x LH Valved Link \u0026amp; Outlet Pipe; 1 x RH Valved Link \u0026amp; Outlet Pipe; 1 x Chassis Brace Plate; 1 x Rear Silencer; 4 x Burnt Titanium 4.5\" Trims; 115 GT Milltek note: Secondary Cat Back System with Centre Resonator Bypass \u0026amp; GT-115 Burnt\/Blue Titanium Trims - Requires OE system to be cut.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDownpipe options: compare every part number\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart #\u003c\/th\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eFits with (Milltek)\u003c\/th\u003e\n\u003cth\u003eStage 2 ECU remap\u003c\/th\u003e\n\u003cth\u003eRace\/Track only\u003c\/th\u003e\n\u003cth\u003ePipe size\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1271\u003c\/td\u003e\n\u003ctd\u003eCatless Downpipe (Race\/Track only): needs Stage 2 ECU remap - Fits to OE and Milltek Sport 3\" Midpipe Systems\u003c\/td\u003e\n\u003ctd\u003eRequires Stage 2 ECU Remap - Fits to OE and Milltek Sport 3\" Midpipe Systems\u003c\/td\u003e\n\u003ctd\u003eRequired\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003e3.00\" (76.20mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSXBM1235\u003c\/td\u003e\n\u003ctd\u003eCatted Downpipe (Race\/Track only): with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026amp; Milltek...\u003c\/td\u003e\n\u003ctd\u003ewith HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026amp; Milltek Sport 3\" Cat Back System\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003e3.00\" (76.20mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\"Race\/Track only\" and \"Stage 2 ECU remap\" are shown only where Milltek states them. A dash means Milltek does not state it for that part.\u003c\/p\u003e\u003ch3\u003eWhat comes with each downpipe option\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1271\u003c\/strong\u003e: 1 x LH Primary Cat Bypass; 1 x RH Primary Cat Bypass; 1 x LH Cat Link Pipe Milltek note: Requires Stage 2 ECU Remap - Fits to OE and Milltek Sport Systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSSXBM1235\u003c\/strong\u003e: 1 x LH Downpipe \u0026amp; Cat Assembly; 1 x RH Downpipe \u0026amp; Cat Assembly; 1 x LH Cat Link Pipe Milltek note: with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026amp; Milltek Sport Cat Back System.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCatted and catless downpipes\u003c\/h3\u003e\u003cp\u003eA \u003cstrong\u003ecatted downpipe\u003c\/strong\u003e keeps a catalytic converter in the downpipe. A \u003cstrong\u003ecatless downpipe\u003c\/strong\u003e (de-cat) replaces it with a straight pipe. Each option name above says which one it is.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eBMW 3 Series G80 M3 \u0026amp; M3 Competition S58 3.0 Turbo, 2021+. US-market model listing. Confirm your exact model, engine and options before ordering, and message us if you are not sure.\u003c\/p\u003e\u003ch3\u003eAbout Milltek Sport\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eT304L stainless steel, CNC mandrel bent.\u003c\/li\u003e\n\u003cli\u003eDesigned and developed in Derby, UK with a US facility in Knoxville, Tennessee, and tested at the Nürburgring.\u003c\/li\u003e\n\u003cli\u003eCompany founded in 1983.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWarranty\u003c\/h3\u003e\u003cp\u003eMilltek covers most products with a lifetime guarantee. Downpipes, hi-flow catalysts and any part with valves are covered for 2 years or 80,000 km, and electronic products for 2 years. Claims go through the authorized dealer you bought from, and cover the original purchaser only. Full terms: millteksport.com\/Warranty.html\u003c\/p\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCatless downpipes and other cat bypass parts replace emissions equipment. They are sold for off-road and competition use where local law allows. You are responsible for checking the rules that apply to your vehicle.\u003c\/li\u003e\n\u003cli\u003eSome downpipe options need a Stage 2 ECU remap. Read the option name before you order.\u003c\/li\u003e\n\u003cli\u003eFitting times are Milltek estimates for a professional installer.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Milltek Sport","offers":[{"title":"Axle Back System \/ Polished GT-115 \/ Cat-Back Only","offer_id":67999477268631,"sku":"SSXBM1169","price":3534.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Polished GT-115 \/ Catless Downpipe (Race\/Track only): needs Stage 2 ECU remap - Fits to OE and Milltek Sport 3\" Midpipe Systems","offer_id":67999477301399,"sku":"SSXBM1169 + SSXBM1271","price":5053.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Polished GT-115 \/ Catted Downpipe (Race\/Track only): with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026 Milltek...","offer_id":67999477334167,"sku":"SSXBM1169 + SSXBM1235","price":7393.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Cerakote Black GT-115 \/ Cat-Back Only","offer_id":67999477366935,"sku":"SSXBM1170","price":3926.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Cerakote Black GT-115 \/ Catless Downpipe (Race\/Track only): needs Stage 2 ECU remap - Fits to OE and Milltek Sport 3\" Midpipe Systems","offer_id":67999477399703,"sku":"SSXBM1170 + SSXBM1271","price":5445.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Cerakote Black GT-115 \/ Catted Downpipe (Race\/Track only): with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026 Milltek...","offer_id":67999477432471,"sku":"SSXBM1170 + SSXBM1235","price":7785.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Brushed Titanium GT-115 \/ Cat-Back Only","offer_id":67999477465239,"sku":"SSXBM1171","price":4218.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Brushed Titanium GT-115 \/ Catless Downpipe (Race\/Track only): needs Stage 2 ECU remap - Fits to OE and Milltek Sport 3\" Midpipe Systems","offer_id":67999477498007,"sku":"SSXBM1171 + SSXBM1271","price":5737.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Brushed Titanium GT-115 \/ Catted Downpipe (Race\/Track only): with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026 Milltek...","offer_id":67999477530775,"sku":"SSXBM1171 + SSXBM1235","price":8077.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Burnt Titanium GT-115 \/ Cat-Back Only","offer_id":67999477563543,"sku":"SSXBM1172","price":4418.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Burnt Titanium GT-115 \/ Catless Downpipe (Race\/Track only): needs Stage 2 ECU remap - Fits to OE and Milltek Sport 3\" Midpipe Systems","offer_id":67999477596311,"sku":"SSXBM1172 + SSXBM1271","price":5937.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ Burnt Titanium GT-115 \/ Catted Downpipe (Race\/Track only): with HJS HQ 200CPSI Cats (No CEL or ECU Software Required) - Fits to OE Secondary Cats \u0026 Milltek...","offer_id":67999477629079,"sku":"SSXBM1172 + SSXBM1235","price":8277.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ JET-115 Carbon \/ Cat-Back Only","offer_id":67999477661847,"sku":"SSXBM1173","price":4330.0,"currency_code":"USD","in_stock":true},{"title":"Axle Back System \/ JET-115 Carbon \/ Catless Downpipe (Race\/Track only): needs Stage 2 ECU remap - 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