Ramjet Mustang GT full exhaust system for the 2015-2023 Ford Mustang GT 5.0L Coyote V8
Ramjet Mustang GT cat-back section in 304 stainless steel
Ramjet equal-length long-tube headers for the Mustang GT Coyote V8
Description
The Ramjet Mustang GT Full Exhaust System is a complete, bolt-on header-back exhaust for the Ford Mustang GT 5.0L Coyote V8 (2015–2017 and 2018–2023). 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.
Specifications at a glance
- Fits: Ford Mustang GT 5.0L Coyote V8 — 2015–2017 & 2018–2023
- System type: Full (header-back) exhaust system
- Headers: Equal-length long-tube, 1¾" — optional double-stepped 1¾"→1⅞"
- Material: 304 stainless steel
- Catalytic converters: 100-cell high-flow
- Sound: Deep, aggressive V8 tone — no rasp, no drone
- Included: Headers, high-flow cats, connector pipes, hot-dog centre pipes, rear mufflers, gaskets and bolts
- Fitment: Direct bolt-on, no modifications required
Engineered Headers & High-Flow Cats
The 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.
For 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.
Refined Mustang V8 Sound – No Rasp, No Drone
The 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.
Proven Power & Record-Setting Performance
The 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.
What’s Included
- Ramjet Headers
- Ramjet High-Flow Cats
- Ramjet Connector Pipes
- Ramjet Hot Dog Centre Pipes
- Ramjet Rear Mufflers
- All required gaskets and bolts
Note: Header gaskets are not supplied. We recommend re-using the factory gasket with RTV silicone for best sealing results.
Frequently Asked Questions
Will this fit my Mustang GT? 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.
Is this a complete exhaust system? Yes. It is a full header-back package — headers, high-flow cats, connector pipes, centre pipes and rear mufflers — everything needed to bolt on.
Will it drone on the highway? No. The cat-back is tuned for a deep, refined V8 note without harsh rasp or cabin drone.
Do I need a tune? 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.
What power gains can I expect? 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.
Is it road legal? It uses high-flow catalytic converters to retain street usability. Emissions rules vary by state, so check your local requirements.
↩️ 7-day returns on unopened items
📞 Not sure if it fits? Call +61 452 071 148 or (03) 9746 6656 — talk to the team who builds these.
Product information
PRODUCT FEATURES
F.A.Q.
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How To Return My Items?
We do not currently offer free returns to overseas customers. You will therefore need to cover all costs of returning any items to us yourself. We advise that you mark your package ‘returned goods’ to avoid further duties. Remember: We strongly recommend that you return any items via a registered trackable service and obtain and retain proof of posting as we do not accept responsibility for items that fail to arrive with us.
Performance Technology
Race Merge Collector
The Ramjet race merge collector improves exhaust performance by smoothly guiding exhaust gases from multiple primary pipes into a single outlet, reducing turbulence and pressure reversion.
This creates stronger exhaust scavenging, helping pull spent gases out of the cylinders more efficiently, which improves cylinder filling on the next intake cycle.
The result is increased exhaust gas velocity, stronger mid-range and top-end power, a cleaner and more efficient power curve, and a sharper, more refined exhaust note