{"product_id":"ramjet-mustang-gt-headers-cats-2015-2024-double-step","title":"Ramjet Mustang GT Headers \u0026 Cats 2015-2024- Double Step","description":"\u003cp\u003eThe \u003cstrong\u003eRamjet Mustang GT Double-Stepped Headers \u0026amp; Cats\u003c\/strong\u003e are equal-length, long-tube headers paired with high-flow catalytic converters for the \u003cstrong\u003eFord Mustang GT 5.0L Coyote V8 (2015–2017 and 2018–2023)\u003c\/strong\u003e. The stepped primary design (1¾\" → 1⅞\") maximises exhaust gas velocity and flow for high-horsepower builds without sacrificing low-end torque or drivability, producing a sharp, exotic, race-car exhaust note. Made from premium 304 stainless steel and bolts directly to the factory cat-back.\u003c\/p\u003e\n\u003ch4\u003eSpecifications at a glance\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Ford Mustang GT 5.0L Coyote V8 — 2015–2017 \u0026amp; 2018–2023\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem type:\u003c\/strong\u003e Long-tube headers + high-flow cat section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader design:\u003c\/strong\u003e Equal-length, double-stepped primaries 1¾\" → 1⅞\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 304 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCat options:\u003c\/strong\u003e 100-cell metal, or 200-cell ceramic (forced-induction engines only)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCat-back compatibility:\u003c\/strong\u003e Standard OEM or 3\" aftermarket (select at checkout; connector pipes optional)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound:\u003c\/strong\u003e Sharp, harmonically balanced, exotic V8 tone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Bolts directly to factory cat-back; street-friendly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhy Choose Equal-Length Stepped Headers?\u003c\/h4\u003e\n\u003cp\u003eEqual-length, tuned, stepped headers are engineered to extract maximum performance from the Mustang GT’s Coyote V8 by perfectly timing exhaust pulses. Each primary tube is precisely matched in length, allowing exhaust waves to synchronise so every cylinder helps scavenge the next — improving airflow efficiency and cylinder evacuation.\u003c\/p\u003e\n\u003cp\u003eThe stepped primary design maintains high exhaust gas velocity at low RPM for stronger torque and sharper throttle response, while opening up flow at higher RPM to support serious horsepower. The result is a broader powerband, faster engine response, and a crisp, harmonically balanced race-car exhaust note that unequal headers simply can’t replicate.\u003c\/p\u003e\n\u003ch4\u003eRace-Grade Build, Street-Friendly Versatility\u003c\/h4\u003e\n\u003cp\u003eDesigned for Mustang GT owners who demand uncompromising performance, Ramjet’s double-stepped long-tube headers build on our proven equal-length design with precision-stepped primaries transitioning from 1¾\" to 1⅞\", delivering maximum exhaust flow for high-horsepower builds without sacrificing low-end torque. Manufactured from premium 304 stainless steel with race-level precision, they unlock serious horsepower gains while producing a sharper, more exotic exhaust tone. Paired with Ramjet’s high-flow catalytic converters and optional connector pipes, this setup bolts directly to the factory cat-back — race-grade performance with street usability.\u003c\/p\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit my Mustang GT?\u003c\/strong\u003e Yes — they suit the Ford Mustang GT 5.0L Coyote V8 in both 2015–2017 and 2018–2023. Select your year and cat-back type at checkout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need connector pipes?\u003c\/strong\u003e It depends on your cat-back. Choose your setup (standard OEM or 3\" aftermarket) at checkout and connector-pipe options are presented to match.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShould I choose metal or ceramic cats?\u003c\/strong\u003e 100-cell metal cats suit most naturally aspirated builds. 200-cell ceramic cats are recommended for forced-induction (supercharged\/turbo) engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tune?\u003c\/strong\u003e The headers and cats bolt on as supplied. A tune is recommended to realise the full power gain but is not required for fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre they road legal?\u003c\/strong\u003e High-flow catalytic converters retain street usability. Emissions rules vary by state, so check your local requirements.\u003c\/p\u003e\n\u003cdiv style=\"border:1px solid #e0e0e0;border-radius:8px;padding:14px 16px;margin:18px 0 0;font-size:14px;line-height:1.7\"\u003e💳 \u003cstrong\u003ePay in 4 with Afterpay\u003c\/strong\u003e — 4 interest-free instalments at checkout (eligible orders)\u003cbr\u003e🚚 \u003cstrong\u003eShipping\u003c\/strong\u003e calculated at checkout — ships Australia-wide \u0026amp; worldwide\u003cbr\u003e↩️ \u003cstrong\u003e7-day returns\u003c\/strong\u003e on unopened items\u003cbr\u003e📞 \u003cstrong\u003eNot sure if it fits?\u003c\/strong\u003e Call \u003ca href=\"tel:+61452071148\"\u003e+61 452 071 148\u003c\/a\u003e or \u003ca href=\"tel:+61397466656\"\u003e(03) 9746 6656\u003c\/a\u003e — talk to the team who builds these.\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will these fit my Mustang GT?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes - they suit the Ford Mustang GT 5.0L Coyote V8 in both 2015-2017 and 2018-2023. Select your year and cat-back type at checkout.\"}},{\"@type\":\"Question\",\"name\":\"Do I need connector pipes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It depends on your cat-back. Choose your setup (standard OEM or 3 inch aftermarket) at checkout and connector-pipe options are presented to match.\"}},{\"@type\":\"Question\",\"name\":\"Should I choose metal or ceramic cats?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"100-cell metal cats suit most naturally aspirated builds. 200-cell ceramic cats are recommended for forced-induction (supercharged or turbo) engines.\"}},{\"@type\":\"Question\",\"name\":\"Do I need a tune?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The headers and cats bolt on as supplied. A tune is recommended to realise the full power gain but is not required for fitment.\"}},{\"@type\":\"Question\",\"name\":\"Are they road legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"High-flow catalytic converters retain street usability. Emissions rules vary by state, so check your local requirements.\"}}]}\u003c\/script\u003e","brand":"Ramjet Performance Parts","offers":[{"title":"No ( I already have) \/ 100 Cell Metal \/ Standard OEM","offer_id":51705429164353,"sku":null,"price":1798.0,"currency_code":"AUD","in_stock":true},{"title":"No ( I already have) \/ 100 Cell Metal \/ 3 Inch Aftermarket","offer_id":51728908910913,"sku":null,"price":1798.0,"currency_code":"AUD","in_stock":false},{"title":"No ( I already have) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99) \/ Standard OEM","offer_id":51705429197121,"sku":null,"price":1897.0,"currency_code":"AUD","in_stock":true},{"title":"No ( I already have) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99) \/ 3 Inch Aftermarket","offer_id":51728908943681,"sku":null,"price":1897.0,"currency_code":"AUD","in_stock":false},{"title":"YES 2015-2017 +($176) \/ 100 Cell Metal \/ Standard OEM","offer_id":51609807225153,"sku":null,"price":1974.0,"currency_code":"AUD","in_stock":true},{"title":"YES 2015-2017 +($176) \/ 100 Cell Metal \/ 3 Inch Aftermarket","offer_id":51728908976449,"sku":null,"price":1974.0,"currency_code":"AUD","in_stock":false},{"title":"YES 2015-2017 +($176) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99) \/ Standard OEM","offer_id":51609807257921,"sku":null,"price":2073.0,"currency_code":"AUD","in_stock":true},{"title":"YES 2015-2017 +($176) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99) \/ 3 Inch Aftermarket","offer_id":51728909009217,"sku":null,"price":2073.0,"currency_code":"AUD","in_stock":false},{"title":"YES 2018-2023 +($176) \/ 100 Cell Metal \/ Standard OEM","offer_id":51609807356225,"sku":null,"price":1974.0,"currency_code":"AUD","in_stock":true},{"title":"YES 2018-2023 +($176) \/ 100 Cell Metal \/ 3 Inch Aftermarket","offer_id":51728909041985,"sku":null,"price":1974.0,"currency_code":"AUD","in_stock":false},{"title":"YES 2018-2023 +($176) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99) \/ Standard OEM","offer_id":51609807388993,"sku":null,"price":2073.0,"currency_code":"AUD","in_stock":true},{"title":"YES 2018-2023 +($176) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99) \/ 3 Inch Aftermarket","offer_id":51728909074753,"sku":null,"price":2073.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2805\/7153\/files\/MUSTANG_HEADERS_CATS.jpg?v=1770934016","url":"https:\/\/ramjetperformanceparts.com\/products\/ramjet-mustang-gt-headers-cats-2015-2024-double-step","provider":"Ramjet Performance Parts","version":"1.0","type":"link"}