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Description
Pacemaker Performance Turbo-Back Exhaust System for Ford Mustang S550 Fastback Coupe 2.3L EcoBoost 2015–2017 - PP4173-01Pacemaker Full Performance Turbo Back Exhaust System for Ford Mustang S550 Fastback Coupe (2. 3L EcoBoost Turbo I4) PP4173 01 Accelerate turbo spool response, maximize high boost airflow efficiency, and transform the acoustic character of your forced induction powerplant with the Pacemaker Sport Systems heavy duty complete turbo back performance exhaust solution. Precision engineered specifically to handle the thermal loads and high gas velocity
Pacemaker Full Performance Turbo-Back Exhaust System for Ford Mustang S550 Fastback Coupe (2.3L EcoBoost Turbo I4) - PP4173-01
Accelerate turbo spool response, maximize high-boost airflow efficiency, and transform the acoustic character of your forced-induction powerplant with the Pacemaker Sport Systems heavy-duty complete turbo-back performance exhaust solution. Precision-engineered specifically to handle the thermal loads and high gas velocity demands of the 2.3L EcoBoost twin-scroll turbocharged engine, this premium full system upgrades your vehicle path directly from the turbocharger turbine outlet back to the rear exhaust tips. Mapped carefully to clear the sleek fastback coupe floor pan lines, transmission tunnel paths, and multi-link independent rear suspension geometry, it guarantees an uncompromised, rub-free layout configuration beneath your fixed-roof performance platform. By pairing a high-flow downpipe layout and a premium 3" metallic high-flow catalytic converter with smooth, mandrel-bent performance plumbing, it completely obliterates backpressure to minimize turbo lag and deliver rapid boost progression. As Australia’s premium exhaust innovator, Pacemaker pairs this free-flowing system with patented V-Tex technology and signature double-skinned mufflers to emit a deep, commanding sports car tone under load while actively filtering out harsh, low-frequency highway drone or cabin resonance. Note: Fits Ford Mustang S550 Fastback Coupe models (2015–2017) equipped with the 2.3L EcoBoost Turbo 4-cylinder engine configuration; does not fit Convertible variants due to the altered floor paths required to clear soft-top chassis reinforcement cross-bracing.
Features:
Precision-manufactured in Australia to deliver a definitive performance upgrade, rapid boost acceleration, and an aggressive, drone-free turbo sports acoustic profile for the iconic S550 fastback coupe platform.
- True Turbo-Back System: Comprehensive, high-performance exhaust solution from the turbocharger dump housing down to the rear dual exit tips, including a premium high-flow converter setup.
- Fastback Coupe Optimized: Custom-engineered to clear the floor pan configurations, standard chassis tunnels, and factory hanger geometries unique to the fixed-roof fastback platform.
- High-Flow Catalyst Integration: Includes a high-flow 3" metallic catalytic converter section designed to optimize eco-compliance metrics while maximizing high-volume gas velocity out of the turbine.
- Premium Materials: Constructed completely from durable, heavy-gauge Exhaust Grade 409 Stainless Steel to ensure superior structural longevity under intense forced-induction thermal stress.
- Mandrel Bent Tubing: Rigid plumbing structure guarantees a smooth, uniform internal pipe diameter through all bends to eliminate gas turbulence and prevent restriction.
- V-Tex Technology: Advanced internal patented anti-drone configuration filters out harsh, raspy 4-cylinder cabin resonance typical of turbo sports cars without restricting system backpressure.
- Signature Mufflers: Heavy-duty double-skinned 409 Stainless Steel mufflers offer premium outer case reinforcement, preventing case distortion and internal packing blowout under intense high-boost heat.
| Product Specifications for PP4173-01 | |||
|---|---|---|---|
| Brand | Pacemaker Sport Systems | Part # / SKU | PP4173-01 |
| Product Type | Complete Performance Turbo-Back Exhaust System | Catalytic Converter | 3" High-Flow Metallic Converter Section Included |
| Material | 409 Grade Stainless Steel | Acoustic Technology | V-Tex Patented Anti-Drone Configuration |
| Engine Compatibility | 2.3L EcoBoost Twin-Scroll Turbocharged I4 | Body Compatibility | Fastback Coupe Only |
Important Fitment Notes:
- Specifically engineered to fit Ford Mustang S550 Fastback Coupe models powered by the 2.3L EcoBoost inline-4 turbocharged engine configuration (2015–2017 models).
- Coupe Specific Layout: This system features specific piping clearances and bracket mapping designed precisely to mount under the fastback coupe chassis path. It will not adapt cleanly to Convertible variants because it does not feature the necessary underbody relief routes to clear the additional soft-top chassis reinforcement cross-braces.
- Full kit scope: Comprehensive high-efficiency solution from turbocharger turbine collector face to rear bumper line, including performance dump pipe/downpipe plumbing, high-flow metallic converter section, intermediate structural routing lines, and dual-exit signature double-skinned rear mufflers.
- Direct bolt-on layout matches vehicle-specific factory rubber hanger positions and turbocharger exit flange mounts. No custom fabrication or welding mapping required.
- Professional automotive performance technician installation is highly recommended to guarantee ideal ground clearance, verify turbo flange scaling, and secure strict gas-tight seals.
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| FORD MOTOR COMPANY | ||||||||
| Ford | Mustang EcoBoost | 2015 | 2017 | Fastback Coupe Only | S550 (Pre-Facelift Generation) | 2.3L Turbo I4 EcoBoost | Base / Premium Fastback Models | RWD |
Warranty Information
| Product | Warranty Period |
|---|---|
| Pacemaker Sports Exhaust Systems | Five (5) years. |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
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4.8 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Instant relief and moisturized skin well!
Size: 3 Ounce (Pack of 1), Style: Cool Down Lotion
We used the Sun Bum Cool Down Aloe Vera Lotion after getting a little too much sun on vacation, and it worked so well. It gave instant cooling relief without any sticky or greasy feeling. The lotion absorbed quickly and actually soothed the burn instead of just sitting on top of the skin like some aloe gels do.
The smell is light and tropical—really pleasant and not overpowering. After applying it a couple of times, our skin felt way less hot and tight, and it definitely helped prevent peeling. We’ll absolutely be bringing this with us on every beach trip from now on!
Highly recommend if you’re looking for a sunburn solution that actually works and feels good to use.
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Reviewed in the United States on July 11, 2025
★★★★★ 5
Sun Bum Cool Down After Sun Lotion
Size: 8 Ounce (Pack of 1), Style: Cool Down Lotion
I would give this more stars if I could!
As someone who spends as much time as possible soaking up the sun during the summer, I’ve found a true gem in Sun Bum’s Cool Down After Sun Lotion. This product has become my go-to for post-sun care, and it’s easy to see why—it’s like gold for sun-exposed skin! With its fantastic tropical scent, skin-loving formula, and high ratings on the Yuka app for its all-natural ingredients, this lotion is a standout. Here’s a detailed look at why I highly recommend it for anyone who loves summer adventures.
Ingredients and Yuka Rating
One of the standout features of Sun Bum’s Cool Down After Sun Lotion is its commitment to clean, natural ingredients, which has earned it excellent reviews on the Yuka app. According to the product description, it’s formulated with soothing aloe vera, vitamin E, and coconut oil, all of which work together to hydrate and nourish sun-exposed skin. These ingredients are free from harmful chemicals like parabens, sulfates, and dyes, making it a safe choice for those prioritizing non-toxic skincare. The Yuka app, known for analyzing product safety, rates this lotion highly for its clean, natural composition, which aligns perfectly with my preference for products that are good for both my skin and the environment. This clean formula gives me peace of mind, knowing I’m not applying anything harsh after a long day in the sun.
Scent and Sensory Experience
The scent of this lotion is nothing short of phenomenal—it truly smells like summer in a bottle! The tropical, coconut-adjacent fragrance is light and refreshing, evoking the feeling of a beach vacation. Unlike some overpowering or artificial-smelling products, Sun Bum’s scent is gentle yet nostalgic, making the application process a delight. It’s not just about function; this lotion elevates the entire post-sun care routine with its inviting aroma, which lingers subtly on the skin without being overwhelming.
Performance and Skin Benefits
When it comes to performance, Sun Bum Cool Down After Sun Lotion delivers exceptional results. After hours of playing in the sun—whether swimming, hiking, or lounging on the beach—my skin often feels dry, tight, or slightly irritated. This lotion instantly soothes and cools, providing immediate relief. The lightweight, non-greasy formula absorbs quickly, leaving no sticky residue, which is a huge plus compared to some heavier after-sun products I’ve tried. My skin drinks it up, feeling soft, hydrated, and revitalized after each use. The inclusion of aloe vera helps calm any redness or mild sunburn, while coconut oil and vitamin E lock in moisture, preventing peeling and keeping my skin smooth. I’ve noticed it helps maintain my summer glow without the flakiness that can come from sun exposure.
Texture and Application
The texture of this lotion is a perfect balance—not too thick like a heavy cream, but not runny like some gels. It has a smooth, serum-like consistency that glides onto the skin effortlessly and absorbs in seconds. I appreciate how a little goes a long way, making the 8-ounce bottle last through many applications. For an extra cooling effect, I sometimes store it in the fridge, which feels incredibly refreshing on warm, sun-kissed skin. The lotion applies evenly, and I’ve used it on both my body and face without any issues, even on my sensitive skin.
Durability and Practicality
I’ve been using this lotion consistently throughout the summer, and it’s held up beautifully as part of my daily post-sun routine. The bottle is sturdy and travel-friendly, fitting easily into my beach bag or backpack. While Sun Bum notes that shipping to certain areas like Hawaii or Alaska may be restricted due to alcohol content, I’ve had no issues purchasing it locally or online for mainland use. The formula remains effective even after multiple uses in a single day, and I’ve never experienced any separation or change in texture, which speaks to its quality.
Comparison to Other After-Sun Products
Compared to other after-sun lotions I’ve tried, Sun Bum’s Cool Down stands out for its lightweight feel and natural ingredients. Many gels can feel tacky or sticky, and some creams are too heavy for summer use, but this lotion strikes the perfect balance. Its Yuka-approved clean formula also sets it apart from competitors that may contain questionable chemicals. While some after-sun products focus solely on cooling, Sun Bum’s inclusion of nourishing ingredients like vitamin E and coconut oil makes it a more comprehensive solution for skin recovery.
Pros
Clean Ingredients: High Yuka rating for all-natural, non-toxic formula with aloe vera, vitamin E, and coconut oil.
Fantastic Scent: Tropical, coconut-like fragrance that smells like summer without being overpowering.
Lightweight and Non-Greasy: Absorbs quickly, leaving skin soft and hydrated without stickiness.
Soothing and Hydrating: Calms redness, prevents peeling, and restores moisture after sun exposure.
Versatile: Suitable for face and body, great for sensitive skin, and effective for mild sunburns.
Travel-Friendly: Sturdy bottle perfect for beach bags or travel.
Cons
Price Point: Slightly more expensive than drugstore alternatives, but worth it for the quality and clean ingredients.
Conclusion
Sun Bum Cool Down After Sun Lotion is a must-have for anyone who loves spending time in the sun. Its clean, natural ingredients, delightful tropical scent, and lightweight, hydrating formula make it a standout in post-sun care. My skin absolutely loves it, and the high Yuka rating gives me confidence that I’m using a product that’s good for me and the environment. Whether you’re recovering from a beach day or just need to soothe sun-exposed skin, this lotion delivers on every front. It’s become an essential part of my summer routine, and I highly recommend it to anyone looking for a reliable, skin-loving after-sun product.
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Reviewed in the United States on July 2, 2025
★★★★★ 5
great!
Size: 8 Ounce (Pack of 1), Style: Cool Down Lotion
such an amazing lotion, it makes me feel great after being in the sun for a while, and i love the smell!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Get it
Size: 8 Ounce (Pack of 1), Style: Cool Down Lotion
Love this stuff. Best recovery from the sun I have found. I am very fair and even with sunscreen sometimes still get a little burnt. My friends who get tan and had a long day in the sun are quick to grab this from me and use it at the end of the day. I highly recommend this for anyone. It’s cooling and hydrating. Repair or maintenance for your skin, it’s great for both options. Lightweight and easy to apply. Hands down, worth it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
★★★★★ 4
Smells Great and Works Well
Size: 3 Ounce (Pack of 1), Style: Cool Down Lotion
Smells great and goes on really smoothly. Skin felt soft and refreshed after use. It is pretty "liquidy" and can come out of the bottle a little on the quick and messy side, but nothing too terrible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2025
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