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Description
Pacemaker Twin 2.5" Performance Exhaust System with Headers for Ford Mustang GT S550 Convertible 5.0L V8 2015–2017 RHD - PP4178-04Pacemaker Full Twin 2. 5" Performance Exhaust System with Headers & Hi Flow Cats for Ford Mustang GT Convertible (5. 0L Coyote V8) PP4178 04 Unleash an uncompromised, aggressive American muscle roar and unlock substantial power gains from your high revving quad cam engine with the Pacemaker Sport Systems complete twin 2. 5 inch performance exhaust solution. Specifically engineered to maximize scavenging efficiency, optimize exhaust gas velocity, and
Pacemaker Full Twin 2.5" Performance Exhaust System with Headers & Hi-Flow Cats for Ford Mustang GT Convertible (5.0L Coyote V8) - PP4178-04
Unleash an uncompromised, aggressive American muscle roar and unlock substantial power gains from your high-revving quad-cam engine with the Pacemaker Sport Systems complete twin 2.5-inch performance exhaust solution. Specifically engineered to maximize scavenging efficiency, optimize exhaust gas velocity, and satisfy the unique chassis configurations of the iconic S550 platform, this premium system is precisely shaped to map the specific structural underbody bracing lines of the factory Ford Mustang Convertible. By upgrading your stock layout to race-proven performance extractors paired with mandrel-bent twin 2.5" plumbing and high-flow metallic catalytic converters, it maximizes exhaust gas scavenging to completely eliminate power-robbing backpressure under heavy acceleration. As Australia’s premium exhaust innovator, Pacemaker integrates elite structural engineering with patented V-Tex technology and signature double-skinned mufflers, delivering a commanding, throaty performance bark on throttle while actively engineering out harsh, intrusive cabin boom or highway drone typical of convertible cabins. Note: Fits Right-Hand Drive (RHD) Ford Mustang GT Convertible models (2015–2017) equipped with the 5.0L Coyote V8 engine configuration; does not fit Fastback models due to convertible-specific chassis reinforcement paths.
Features:
Precision-manufactured in Australia to deliver a high-velocity flow upgrade, maximum structural longevity under intense heat, and a refined muscle car acoustic profile for the iconic RHD Mustang platform.
- Complete Headers & Full System: Comprehensive track-and-street performance solution incorporating high-flow primary headers, 3" metallic high-flow catalytic converters, and a matching twin 2.5-inch performance cat-back system.
- Convertible-Specific Clearances: Custom engineered to route flawlessly around the additional under-car chassis strengthening cross-bracing unique to the soft-top convertible floor pan lines.
- Premium Materials: Constructed completely from durable, heavy-gauge Exhaust Grade 409 Stainless Steel to ensure superior resistance to thermal fatigue and rust.
- Mandrel Bent Tubing: Rigid twin 2.5" (63.5mm) pipe structure guarantees a smooth, uniform internal diameter through all bends to optimize exhaust gas tracking.
- V-Tex Technology: Advanced internal patented anti-drone configuration cancels out harsh, low-frequency cabin resonance typical of open-air convertibles without restricting gas velocity.
- Signature Mufflers: Heavy-duty double-skinned 409 Stainless Steel mufflers offer premium case reinforcement, preventing case distortion and internal packing blowout under extreme load.
- Right-Hand Drive Optimized: Specifically mapped and cleared to fit Right-Hand Drive (RHD) configurations seamlessly around steering linkages and factory layout components.
| Product Specifications for PP4178-04 | |||
|---|---|---|---|
| Brand | Pacemaker Sport Systems | Part # / SKU | PP4178-04 |
| Product Type | Full Tuned Exhaust & Header Kit | System Piping Size | Twin 2.5" (63.5mm) Mandrel-Bent System |
| Material | 409 Grade Stainless Steel | Catalytic Converter | 3" High-Flow Metallic Converters Section |
| Engine Compatibility | 5.0L Coyote DOHC V8 (Gen 2) | Steering Drive Alignment | Right-Hand Drive (RHD) Only |
Important Fitment Notes:
- Specifically engineered to fit Ford Mustang S550 GT Convertible models powered by the 5.0L Coyote V8 engine configuration (2015–2017 models).
- Convertible Specific Layout Constraints: Mustang Convertibles feature extensive cross-bracing under the vehicle center floor pan to maintain structural rigidity. This kit features specific piping bends and modified intermediate paths to completely clear these factory braces without rubbing or floor vibration. It will not align properly with standard Fastback variants.
- Right-Hand Drive Only: Header primary routing is exclusively mapped to navigate around standard factory RHD steering gear configurations. Will not fit imported Left-Hand Drive (LHD) models.
- Full kit scope: Comprehensive track-and-street performance solution from engine block to rear exit, including tuned primary headers, high-flow metallic catalytic converters, intermediate twin 2.5" tubing, and signature double-skinned rear twin mufflers.
- Professional automotive performance technician installation is highly recommended to guarantee ideal ground clearance around convertible bracing, correct steering link alignment, and strict gas-tight seals.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| FORD MOTOR COMPANY | ||||||||
| Ford | Mustang GT | 2015 | 2017 | Convertible Only | S550 (Pre-Facelift) | 5.0L Coyote V8 | GT Premium RHD Models | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Sports Exhaust Systems | Five (5) years. |
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Exchange/Return Notes
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Product Reviews
★★★★★ 5
Amazing!!
Scent: Unscented, Size: 1.85 Fl Oz (Pack of 1), Scent: Unscented, Size: 1.85 Fl Oz (Pack of 1)
Amazing product! I have a hormone imbalance and am prone to ingrown hairs, pustules, and very coarse hair on my chin, jawline, and neck. Since using this product, my ingrown hairs have decreased significantly. It works well for me as someone with PCOS. It has a very comfortable scent, but it is very light. I don’t notice the smell after I rub it in. It really works and should consistently use.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
soft finish for upper lip and chin area
I pay close attention to fine facial hair, especially around my upper lip and chin area. Under strong lighting, those small hairs can appear more visible, so I have been looking for a gentle way to care for this area without anything harsh or overly complicated. At night, after cleansing my face and completing my basic skincare, I apply this oil as the final step. It feels like a light finishing layer over the skin. I use a very small amount, about one or two drops, warm it between my fingertips, then gently press it onto the upper lip and chin area. There is no stinging sensation, and the scent is very mild, which makes the application feel calm and comfortable. The texture feels lighter than expected. It spreads smoothly and settles quickly without leaving a heavy or greasy film. My skin type leans slightly combination, and in my case it sits well without making the T zone feel overly coated. Even when I follow with a light moisturizer, it layers without pilling and still feels breathable on the skin. After using it regularly every three days in the evening, the change I notice is mainly visual. The fine facial hair looks less pronounced under bright lighting, especially around the upper lip area. The skin surface also appears more even, and when I touch it, it feels smoother and less uneven in texture. These changes feel gradual rather than sudden, becoming more noticeable over time. From a makeup perspective in the morning, my base applies more evenly after cleansing. Foundation tends to sit more smoothly around the chin and upper lip area, without clinging to texture. During humid days, the skin can feel slightly more active in oil balance, but the overall finish still looks even and natural once makeup is applied.
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Good for maintaining clean beard lines
I keep my beard trimmed, but I always have to clean up the edges along my neckline to keep it looking neat. Lately, I've been massaging a few drops of this natural oil into my neck on Tuesday mornings right after I finish shaving at the sink. It feels really soothing on freshly shaved skin, kind of acting like a light daily moisturizer.
The bottle is only 1.85 ounces, but you only need a tiny dab to cover a small area so it should last a while. Over the last month, the stubble along my collar line definitely feels softer, and it takes an extra day or two before it starts looking messy again. If you trim your own facial hair and want to stretch out the time between touching up your neck or cheek lines, this is handy to keep by the mirror.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Gentle Oil for After Hair Removal Care
I started using this Cyperus oil after shaving because my skin often feels dry afterward. The texture is lightweight and spreads easily, so I only need a small amount on areas like legs and underarms. I usually apply it after showering, when my skin is clean and dry, then massage it in for a few minutes. The oil feels soothing and gives my skin a softer, more moisturized feeling without being too greasy. It absorbs better than I expected, especially when I use a thin layer. The scent is mild and does not bother me during daily use. For unwanted hair care, I know it is not something that shows a big change overnight, so I use it consistently after hair removal. It has been easy to add into my routine, and I like that it helps calm and moisturize my skin after shaving or waxing.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Skincare and Hair Care Experience with This Cyperus Rotundus Oil
This cyperus rotundus oil has a lightweight texture with good fluidity, it absorbs quickly when applied to the face, leaving no greasy or heavy feeling, even for combination-oily skin, I mainly use it for facial moisturizing and body care, after washing my face, I warm 2-3 drops in my palms and press it into my skin, and it doesn’t cause pilling when applying makeup afterward, leaving my skin soft and smooth, for hair care, after using it consistently for a month, the hair on my underarms and limbs has become finer, and the growth rate has slowed down significantly, so I don’t need to remove hair frequently, my skin also doesn’t get rough from frequent shaving, there’s no stinging or burning sensation during use, making it safe for sensitive skin, and the light aloe scent is fresh and pleasant, the dropper design is convenient, allowing precise dosage control to avoid waste, in addition to face and body, I also use it for scalp care, after washing my hair, I massage a few drops into my scalp, which relieves dryness and makes my hair smoother and shinier, overall, it delivers noticeable results for both skincare and hair care, with a comfortable user experience.
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Reviewed in the United States on April 10, 2026