{"title":"Mustang GT Exhaust Systems","description":"\u003ch3 data-start=\"42\" data-end=\"113\"\u003eRamjet Mustang Exhaust Systems – Built for Power, Sound \u0026amp; Precision\u003c\/h3\u003e\n\u003cp data-start=\"115\" data-end=\"519\"\u003eUnleash the full potential of your Mustang with \u003cstrong data-start=\"163\" data-end=\"201\"\u003eRamjet Performance Exhaust Systems\u003c\/strong\u003e — engineered for drivers who demand \u003cstrong data-start=\"238\" data-end=\"329\"\u003emaximum power gains, razor-sharp throttle response, and a truly aggressive exhaust note\u003c\/strong\u003e. Designed specifically for high-performance Mustang builds, every Ramjet system is developed with one goal in mind: \u003cstrong data-start=\"446\" data-end=\"518\"\u003eextract more power while delivering a clean, exotic, race-bred sound\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"521\" data-end=\"883\"\u003eRamjet Mustang exhausts feature \u003cstrong data-start=\"553\" data-end=\"594\"\u003eequal-length and tuned-length designs\u003c\/strong\u003e to perfectly time exhaust pulses, improving scavenging efficiency and maintaining high exhaust gas velocity across the rev range. The result is \u003cstrong data-start=\"739\" data-end=\"825\"\u003estronger low-to-mid torque, harder top-end pull, and a harmonically balanced sound\u003c\/strong\u003e that separates Ramjet from generic off-the-shelf systems.\u003c\/p\u003e\n\u003cp data-start=\"885\" data-end=\"1277\"\u003eConstructed from \u003cstrong data-start=\"902\" data-end=\"933\"\u003epremium 304 stainless steel\u003c\/strong\u003e, Ramjet exhaust components are built to handle extreme heat, high horsepower applications, and daily driving abuse without compromise. Precision mandrel bends, smooth transitions, and high-flow muffler designs ensure unrestricted flow while eliminating drone — delivering a crisp, controlled note at cruise and an unmistakable roar under load.\u003c\/p\u003e\n\u003cp data-start=\"1279\" data-end=\"1674\"\u003eWhether you’re chasing \u003cstrong data-start=\"1302\" data-end=\"1331\"\u003enaturally aspirated gains\u003c\/strong\u003e, planning a \u003cstrong data-start=\"1344\" data-end=\"1364\"\u003ecamshaft upgrade\u003c\/strong\u003e, or building a \u003cstrong data-start=\"1380\" data-end=\"1424\"\u003ehigh-horsepower forced-induction Mustang\u003c\/strong\u003e, Ramjet exhaust systems are designed to scale with your setup. From long-tube headers and high-flow catalytic converters to X-pipes, mid-pipes, and cat-back systems, every component bolts up cleanly to factory mounting points for a seamless install.\u003c\/p\u003e\n\u003ch4 data-start=\"1676\" data-end=\"1716\"\u003eWhy Choose Ramjet Mustang Exhausts?\u003c\/h4\u003e\n\u003cul data-start=\"1717\" data-end=\"2031\"\u003e\n\u003cli data-start=\"1717\" data-end=\"1765\"\u003e\n\u003cp data-start=\"1719\" data-end=\"1765\"\u003eEngineered for \u003cstrong data-start=\"1734\" data-end=\"1765\"\u003ereal power and torque gains\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1766\" data-end=\"1825\"\u003e\n\u003cp data-start=\"1768\" data-end=\"1825\"\u003e\u003cstrong data-start=\"1768\" data-end=\"1800\"\u003eTuned \u0026amp; equal-length designs\u003c\/strong\u003e for optimal scavenging\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1826\" data-end=\"1872\"\u003e\n\u003cp data-start=\"1828\" data-end=\"1872\"\u003ePremium \u003cstrong data-start=\"1836\" data-end=\"1872\"\u003e304 stainless steel construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1873\" data-end=\"1922\"\u003e\n\u003cp data-start=\"1875\" data-end=\"1922\"\u003eAggressive, exotic sound with \u003cstrong data-start=\"1905\" data-end=\"1922\"\u003eminimal drone\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1923\" data-end=\"1979\"\u003e\n\u003cp data-start=\"1925\" data-end=\"1979\"\u003eDesigned for \u003cstrong data-start=\"1938\" data-end=\"1979\"\u003estreet, strip, and track applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1980\" data-end=\"2031\"\u003e\n\u003cp data-start=\"1982\" data-end=\"2031\"\u003ePrecision fitment with factory-style installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2033\" data-end=\"2228\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eIf you’re serious about performance, sound quality, and long-term reliability, \u003cstrong data-start=\"2112\" data-end=\"2146\"\u003eRamjet Mustang Exhaust Systems\u003c\/strong\u003e deliver the complete upgrade — no compromises, no shortcuts, just proven results.\u003c\/p\u003e","products":[{"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"},{"product_id":"ramjet-mustang-gt-full-exhaust-system","title":"Ramjet Mustang GT Full Exhaust System","description":"\u003cp\u003e\u003cstrong\u003eThe Ramjet Mustang GT Full Exhaust System\u003c\/strong\u003e is a complete, bolt-on header-back exhaust for the \u003cstrong\u003eFord Mustang GT 5.0L Coyote V8 (2015–2017 and 2018–2023)\u003c\/strong\u003e. It combines equal-length long-tube headers, 100-cell high-flow catalytic converters, connector pipes, centre pipes and rear mufflers to deliver maximum horsepower and a deep, refined V8 note with no rasp or drone. Ramjet holds the Australian record for the fastest full-weight, bolt-on-only Ford Mustang over the ¼ mile.\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 Full (header-back) exhaust system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeaders:\u003c\/strong\u003e Equal-length long-tube, 1¾\" — optional double-stepped 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\u003eCatalytic converters:\u003c\/strong\u003e 100-cell high-flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSound:\u003c\/strong\u003e Deep, aggressive V8 tone — no rasp, no drone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Headers, high-flow cats, connector pipes, hot-dog centre pipes, rear mufflers, gaskets and bolts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Direct bolt-on, no modifications required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eEngineered Headers \u0026amp; High-Flow Cats\u003c\/h4\u003e\n\u003cp\u003eThe system begins with precision-engineered Ramjet headers featuring equal-length primaries to ensure correct exhaust pulse timing and optimal cylinder scavenging. This improves exhaust velocity, torque delivery, and overall engine efficiency. Each system includes race merge collectors for superior scavenging and 100-cell high-flow catalytic converters for maximum flow while maintaining street usability.\u003c\/p\u003e\n\u003cp\u003eFor serious performance builds, an optional upgrade to Ramjet Double-Stepped Headers is available. The double-step design increases exhaust gas velocity across the RPM range, delivering increased horsepower and torque, stronger mid-range acceleration, and a smoother, more refined exhaust note.\u003c\/p\u003e\n\u003ch4\u003eRefined Mustang V8 Sound – No Rasp, No Drone\u003c\/h4\u003e\n\u003cp\u003eThe Ramjet cat-back section is designed to produce a deep, aggressive yet refined V8 tone that sets it apart from other Mustang exhaust systems on the market. Unlike overly loud or raspy systems, it delivers a clean, deep V8 note with no harsh rasp and no obnoxious drone — a sound that gets compliments everywhere you drive, powerful without being tiring on the street.\u003c\/p\u003e\n\u003ch4\u003eProven Power \u0026amp; Record-Setting Performance\u003c\/h4\u003e\n\u003cp\u003eThe Ramjet Full Exhaust System is dyno-tested and track-tested, delivering proven power gains over competing systems — especially when paired with the double-stepped headers. Ramjet currently holds the Australian record for the fastest full-weight, bolt-on-only Ford Mustang down the ¼ mile. This isn’t marketing hype — it’s measured, proven performance.\u003c\/p\u003e\n\u003ch4\u003eWhat’s Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRamjet Headers\u003c\/li\u003e\n\u003cli\u003eRamjet High-Flow Cats\u003c\/li\u003e\n\u003cli\u003eRamjet Connector Pipes\u003c\/li\u003e\n\u003cli\u003eRamjet Hot Dog Centre Pipes\u003c\/li\u003e\n\u003cli\u003eRamjet Rear Mufflers\u003c\/li\u003e\n\u003cli\u003eAll required gaskets and bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Header gaskets are not supplied. We recommend re-using the factory gasket with RTV silicone for best sealing results.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWill this fit my Mustang GT?\u003c\/strong\u003e Yes — it fits the Ford Mustang GT 5.0L Coyote V8 in both 2015–2017 and 2018–2023 model years. Select your year at checkout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a complete exhaust system?\u003c\/strong\u003e Yes. It is a full header-back package — headers, high-flow cats, connector pipes, centre pipes and rear mufflers — everything needed to bolt on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it drone on the highway?\u003c\/strong\u003e No. The cat-back is tuned for a deep, refined V8 note without harsh rasp or cabin drone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tune?\u003c\/strong\u003e The system bolts straight on. To extract maximum power from the headers and high-flow cats, a tune is recommended but not required for fitment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power gains can I expect?\u003c\/strong\u003e Gains depend on your engine build and tune. This is a dyno- and track-proven system that holds an Australian ¼-mile record for bolt-on-only Mustangs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it road legal?\u003c\/strong\u003e It uses high-flow catalytic converters to 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\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 this fit my Mustang GT?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes - it fits the Ford Mustang GT 5.0L Coyote V8 in both 2015-2017 and 2018-2023 model years. Select your year at checkout.\"}},{\"@type\":\"Question\",\"name\":\"Is this a complete exhaust system?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It is a full header-back package - headers, high-flow cats, connector pipes, centre pipes and rear mufflers - everything needed to bolt on.\"}},{\"@type\":\"Question\",\"name\":\"Will it drone on the highway?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. The cat-back is tuned for a deep, refined V8 note without harsh rasp or cabin drone.\"}},{\"@type\":\"Question\",\"name\":\"Do I need a tune?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The system bolts straight on. To extract maximum power from the headers and high-flow cats, a tune is recommended but not required for fitment.\"}},{\"@type\":\"Question\",\"name\":\"What power gains can I expect?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Gains depend on your engine build and tune. This is a dyno- and track-proven system that holds an Australian quarter-mile record for bolt-on-only Mustangs.\"}},{\"@type\":\"Question\",\"name\":\"Is it road legal?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It uses high-flow catalytic converters to retain street usability. Emissions rules vary by state, so check your local requirements.\"}}]}\u003c\/script\u003e","brand":"Ramjet Performance Parts","offers":[{"title":"2015-2017 \/ No I Will Get My Own \/ 1-3\/4 Headers =($0)","offer_id":51608867045697,"sku":null,"price":3499.0,"currency_code":"AUD","in_stock":true},{"title":"2015-2017 \/ No I Will Get My Own \/ Double Step 1 7-8 Headers (+$150)","offer_id":51608867078465,"sku":null,"price":3649.0,"currency_code":"AUD","in_stock":true},{"title":"2015-2017 \/ Yes: ($176) \/ 1-3\/4 Headers =($0)","offer_id":51608867111233,"sku":null,"price":3575.0,"currency_code":"AUD","in_stock":true},{"title":"2015-2017 \/ Yes: ($176) \/ Double Step 1 7-8 Headers (+$150)","offer_id":51608867144001,"sku":null,"price":3825.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ No I Will Get My Own \/ 1-3\/4 Headers =($0)","offer_id":51608867176769,"sku":null,"price":3499.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ No I Will Get My Own \/ Double Step 1 7-8 Headers (+$150)","offer_id":51608867209537,"sku":null,"price":3649.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ Yes: ($176) \/ 1-3\/4 Headers =($0)","offer_id":51608867242305,"sku":null,"price":3675.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ Yes: ($176) \/ Double Step 1 7-8 Headers (+$150)","offer_id":51608867275073,"sku":null,"price":3825.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2805\/7153\/files\/MustangfullEXH.jpg?v=1769639579"},{"product_id":"ramjet-mustang-gt-1-3-4-headers-cats-2015-2023","title":"Ramjet Mustang GT Headers \u0026 Cats 2015-2023- 1 3\/4\"","description":"\u003cp\u003eThe \u003cstrong\u003eRamjet Mustang GT 1¾\" Headers \u0026amp; Cats\u003c\/strong\u003e is a true equal-length, long-tube header and high-flow cat system for the \u003cstrong\u003eFord Mustang GT 5.0L Coyote V8 (2015–2023)\u003c\/strong\u003e. The 1¾\" primary size balances exhaust velocity and airflow for both naturally aspirated and forced-induction setups, improving scavenging for stronger torque, more horsepower and a deeper, sharper exhaust note. Built from premium 304 stainless steel. \u003cstrong\u003eDoes not fit S650 (2024+).\u003c\/strong\u003e\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 (does NOT fit S650 \/ 2024+)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem type:\u003c\/strong\u003e Long-tube headers + high-flow cats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader design:\u003c\/strong\u003e Equal-length, 1¾\" primaries\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 Bolts to factory cat-back with optional connector pipes (select at checkout)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuits:\u003c\/strong\u003e Naturally aspirated and forced-induction builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhy Choose Equal-Length Headers?\u003c\/h4\u003e\n\u003cp\u003eEqual-length headers help your engine breathe properly. Each cylinder’s exhaust travels the same distance before reaching the collector, keeping exhaust pulses evenly spaced. That balance improves scavenging, reduces backpressure and helps the engine make more efficient power — better throttle response, stronger top-end performance and a cleaner, sharper exhaust note instead of a messy or uneven sound.\u003c\/p\u003e\n\u003ch4\u003eRamjet Mustang 1¾\" Headers \u0026amp; High-Flow Cats\u003c\/h4\u003e\n\u003cp\u003eBuilt from premium 304 stainless steel with a true equal-length design and long primary runners, these headers improve exhaust scavenging and performance throughout the rev range for stronger torque, improved horsepower and a deeper, more aggressive note. The 1¾\" primary size works well for both naturally aspirated and forced-induction setups. Included high-flow catalytic converters increase performance while staying street friendly, and with optional connector pipes the setup bolts directly to the factory cat-back.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e1¾\" long-tube headers — equal-length runners improve flow and pulse balance\u003c\/li\u003e\n\u003cli\u003e304 stainless steel construction — handles extreme heat and resists corrosion\u003c\/li\u003e\n\u003cli\u003eHigh-flow catalytic converters — more power while remaining street friendly\u003c\/li\u003e\n\u003cli\u003eFactory-compatible fitment — optional connector pipes allow use of the factory cat-back\u003c\/li\u003e\n\u003cli\u003eMore torque, more horsepower and a sharper, race-inspired exhaust tone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit my Mustang?\u003c\/strong\u003e They fit the Ford Mustang GT 5.0L Coyote V8 from 2015–2023. They do \u003cstrong\u003enot\u003c\/strong\u003e fit the S650 (2024+).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1¾\" vs the double-step headers — which should I choose?\u003c\/strong\u003e The 1¾\" is an excellent all-round choice for NA and forced-induction builds. Step up to the double-stepped 1¾\"→1⅞\" headers if you’re chasing maximum flow on a high-horsepower build.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need connector pipes?\u003c\/strong\u003e Optional connector pipes let the headers bolt directly to your factory cat-back. Choose your option at checkout.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMetal or ceramic cats?\u003c\/strong\u003e 100-cell metal suits most naturally aspirated builds; 200-cell ceramic is recommended for forced-induction engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a tune?\u003c\/strong\u003e Recommended to realise the full gains, but not required for fitment.\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?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"They fit the Ford Mustang GT 5.0L Coyote V8 from 2015-2023. They do not fit the S650 (2024+).\"}},{\"@type\":\"Question\",\"name\":\"1 3\/4 inch vs the double-step headers - which should I choose?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The 1 3\/4 inch is an excellent all-round choice for NA and forced-induction builds. Step up to the double-stepped 1 3\/4 inch to 1 7\/8 inch headers if you are chasing maximum flow on a high-horsepower build.\"}},{\"@type\":\"Question\",\"name\":\"Do I need connector pipes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Optional connector pipes let the headers bolt directly to your factory cat-back. Choose your option at checkout.\"}},{\"@type\":\"Question\",\"name\":\"Metal or ceramic cats?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"100-cell metal suits most naturally aspirated builds; 200-cell ceramic is recommended for forced-induction engines.\"}},{\"@type\":\"Question\",\"name\":\"Do I need a tune?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Recommended to realise the full gains, but not required for fitment.\"}}]}\u003c\/script\u003e","brand":"Ramjet Performance Parts","offers":[{"title":"2015-2017 \/ Standard (Connector Pipes Are Needed +$258) \/ 100 Cell Metal","offer_id":51606532129089,"sku":null,"price":1548.0,"currency_code":"AUD","in_stock":true},{"title":"2015-2017 \/ Standard (Connector Pipes Are Needed +$258) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99)","offer_id":51609921782081,"sku":null,"price":1647.0,"currency_code":"AUD","in_stock":true},{"title":"2015-2017 \/ I will be making my own connector pipes to my catback \/ 100 Cell Metal","offer_id":51606532161857,"sku":null,"price":1290.0,"currency_code":"AUD","in_stock":true},{"title":"2015-2017 \/ I will be making my own connector pipes to my catback \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99)","offer_id":51609921814849,"sku":null,"price":1389.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ Standard (Connector Pipes Are Needed +$258) \/ 100 Cell Metal","offer_id":51606532194625,"sku":null,"price":1548.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ Standard (Connector Pipes Are Needed +$258) \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99)","offer_id":51609921847617,"sku":null,"price":1647.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ I will be making my own connector pipes to my catback \/ 100 Cell Metal","offer_id":51606532227393,"sku":null,"price":1290.0,"currency_code":"AUD","in_stock":true},{"title":"2018-2023 \/ I will be making my own connector pipes to my catback \/ 200 Cell Ceramic (Forced Induction Engines Only) +($99)","offer_id":51609921880385,"sku":null,"price":1389.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2805\/7153\/files\/Untitleddesign_79.png?v=1773623600"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2805\/7153\/collections\/74d0e5af-2637-4813-9f6a-e1dd202696e8.png?v=1768341157","url":"https:\/\/ramjetperformanceparts.com\/collections\/mustang-gt-exhaust-systems-1.oembed","provider":"Ramjet Performance Parts","version":"1.0","type":"link"}