The Carbon Lab
GT4 Style SS304 Exhaust Conversion - Porsche 718 Cayman Boxster 2017+
GT4 Style SS304 Exhaust Conversion - Porsche 718 Cayman Boxster 2017+
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Description
Description
Transform the rear-end styling and exhaust character of your Porsche 718 Cayman or Porsche 718 Boxster with this GT4 Style SS304 Exhaust Conversion. Designed to replicate the distinctive center-exit-inspired appearance of the Porsche GT4 exhaust layout, this conversion provides a more aggressive motorsport aesthetic while upgrading the exhaust flow path and rear presentation of the vehicle.
Manufactured from high-quality SS304 stainless steel, the system offers excellent corrosion resistance, heat tolerance, and long-term durability. Precision-formed tubing and welded connections provide a performance-oriented appearance while the polished stainless steel construction complements both factory and aftermarket rear aerodynamic components.
This conversion is intended for compatible Porsche 718 Cayman and Boxster models and is designed specifically to be used with a GT4-style rear bumper configuration.
Key Specs
| Material | SS304 Stainless Steel |
|---|---|
| Product Type | GT4 Style Exhaust Conversion |
| Style | GT4 Inspired |
| Construction | Precision-Welded Stainless Steel Tubing |
| Finish | Polished Stainless Steel |
| Exhaust Layout | GT4 Style Rear Conversion |
| Exhaust Tips | Dual Performance Exhaust Tips |
| Position | Rear Exhaust Section |
| Application | Performance / Styling Conversion |
| Make | Porsche |
| Model | Porsche 718 Cayman / Porsche 718 Boxster |
| Year | 2017+ |
Package Includes
- 1 × GT4 Style SS304 Exhaust Conversion Assembly
- Left & Right Exhaust Tubing Sections
- Dual Performance Exhaust Tips
- Center Connection / Crossover Section
- Vehicle-Specific Exhaust Connections
- Mounting Hardware & Clamps, where supplied
Features
- GT4-Inspired Exhaust Styling: Designed to give compatible Porsche 718 models a more aggressive, motorsport-inspired rear exhaust appearance.
- SS304 Stainless Steel Construction: Manufactured from high-quality SS304 stainless steel for excellent corrosion resistance, durability, and high-temperature performance.
- Performance-Oriented Exhaust Routing: Smooth tubing and optimized bends are designed to provide a clean exhaust path and reduce unnecessary restriction.
- Aggressive Exhaust Character: Designed to provide a deeper and more performance-focused exhaust tone compared with the standard rear exhaust configuration.
- GT4 Style Rear Conversion: Allows compatible Porsche 718 Cayman and Boxster models to achieve a rear exhaust layout that visually complements GT4-inspired exterior conversions.
- Precision-Welded Construction: Carefully fabricated welds provide structural strength and a premium motorsport appearance.
- Polished Stainless Steel Finish: Provides a clean, high-performance appearance while helping resist corrosion and environmental wear.
- Dual Performance Exhaust Tips: Large polished exhaust outlets create a more aggressive rear-end appearance.
- High-Temperature Durability: SS304 stainless steel is designed to withstand elevated exhaust temperatures during spirited road and performance driving.
- Vehicle-Specific Design: Engineered around the Porsche 718 platform for integration with compatible exhaust and rear bumper configurations.
- Complements GT4 Exterior Conversions: Pairs naturally with GT4-style rear bumpers, diffusers, side skirts, rear wings, and other motorsport-inspired exterior upgrades.
Vehicle Fitment
- Porsche 718 Cayman - 2017+
- Porsche 718 Boxster - 2017+
- Compatible trims subject to exhaust and rear bumper configuration
Fitment Note: Please verify your exact model year, engine configuration, factory exhaust layout, rear bumper design, diffuser configuration, exhaust flange locations, and any existing aftermarket exhaust components before ordering.
Important - GT4 Style Rear Bumper Required: This exhaust conversion is designed for use with a GT4-style rear bumper / diffuser configuration. It may not fit correctly with the standard Porsche 718 rear bumper without the appropriate GT4-style conversion components.
Model Compatibility Note: Compatibility may vary between Base, S, T, GTS, GTS 4.0, GT4, and Spyder configurations. Exact fitment should be confirmed before purchase.
Performance & Sound
The GT4-style exhaust conversion is designed to provide a more direct and performance-oriented exhaust layout while creating a more aggressive rear appearance. Depending on the vehicle's existing exhaust configuration, the system may provide a deeper and more noticeable exhaust tone.
Actual sound level, throttle response, horsepower, and torque changes will vary depending on engine configuration, catalytic converters, headers, mid-pipes, ECU calibration, and other exhaust modifications.
Installation
Professional installation by an experienced Porsche or performance exhaust specialist is strongly recommended. The conversion should be fully test-fitted before final tightening to verify exhaust-tip alignment, bumper and diffuser clearance, connection points, and mounting bracket positioning.
A compatible GT4-style rear bumper is required for proper exhaust outlet positioning and rear-end integration.
Factory clamps, brackets, gaskets, or other exhaust hardware may need to be transferred or replaced depending on the vehicle configuration.
After installation, inspect all exhaust joints for leakage and verify adequate clearance between the exhaust system, rear bumper, diffuser, heat-sensitive components, and surrounding bodywork.
Road Use & Sound Compliance
Performance exhaust modifications may alter vehicle sound characteristics. Local noise, emissions, and road-use regulations vary by region, so buyers should confirm applicable requirements before installation or public-road use.
Production & Shipping
- Lead Time: 2 weeks
- Delivery: 1 week
- Returns: Allowed within 10 days after delivery
- Replacements: Only for items damaged on arrival
Care Guide
Allow Exhaust to Cool: Always allow the exhaust system to cool completely before cleaning, inspection, or maintenance. Stainless steel exhaust components can remain extremely hot after driving.
Regular Cleaning: Clean exposed stainless steel using mild automotive soap, water, and a soft microfiber cloth. A suitable stainless steel polish may be used to restore the polished finish when required.
Avoid Harsh Chemicals: Do not use highly acidic, corrosive, or abrasive cleaning products that may damage or discolor the stainless steel surface.
Inspect Exhaust Connections: Periodically check clamps, mounting brackets, welds, flanges, and exhaust tips to ensure everything remains properly secured.
Check After Performance Driving: Following track use or repeated high-temperature driving, inspect mounting hardware and exhaust connections once the system has fully cooled.
Features
Features
