SOUL Street Exhaust Package, Brushed Tips. Porsche 987.1 Boxster / Cayman › POR.9871.STPKG.SLTBR

The SOUL Performance Street Package is a complete aftermarket performance exhaust upgrade designed specifically for Porsche 987.1 Boxster and Cayman models manufactured between 2005 and 2008.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08  

• Performance Exhaust System
• Long Tube Street Headers

Developed for Porsche's naturally aspirated flat-six engines, this comprehensive exhaust package combines SOUL Performance Long Tube Street Headers with HJS 200-cell high-flow catalytic converters and the SOUL Performance non-valved rear exhaust system.

The package is designed to improve exhaust gas flow, enhance throttle response, reduce weight and produce a deeper, more distinctive flat-six soundtrack.

Unlike a conventional rear silencer replacement, the SOUL Street Package upgrades the exhaust system from the cylinder-head outlets through to the rear exhaust tips.

The original Porsche exhaust features exhaust manifolds with primary catalytic converters and a rear exhaust assembly incorporating secondary catalytic converters. Although these components are designed to meet the vehicle's original emissions and noise requirements, they also introduce restrictions into the exhaust system.

SOUL Performance developed its Street Package to address these restrictions while maintaining a balanced exhaust sound suitable for drivers who value refinement as well as performance.

What This Product Does:
The SOUL Performance Street Package collects exhaust gases from the engine, directs them through high-flow catalytic converters and performance silencers, and releases them through the rear exhaust outlets.

It is designed to reduce unnecessary exhaust restriction while enhancing the sound of the naturally aspirated flat-six engine.

1. Improves Exhaust Gas Flow

The Long Tube Street Headers use carefully developed primary runners and collectors to support efficient movement of combustion gases.

The rear exhaust uses mandrel-bent tubing to minimise unnecessary restrictions.

Together, these components create a freer-flowing exhaust arrangement.

2. Supports Exhaust Scavenging

The runner and collector geometry helps exhaust gases move away from the cylinder heads.

Efficient exhaust scavenging can support engine breathing and responsiveness, particularly during acceleration.

3. Provides Catalytic Exhaust Treatment

The integrated HJS 200-cell catalytic converters treat exhaust gases while allowing greater flow potential than the original restrictive arrangement.

They replace the factory primary catalytic converter assemblies.

Note: The original secondary catalytic converters are removed by the SOUL rear exhaust.

4. Enhances Throttle Response

Improved exhaust gas flow may allow the engine to respond more readily to accelerator input.

This can make the vehicle feel more responsive during acceleration and spirited driving.

5. Produces a More Distinctive Exhaust Sound

The complete package delivers a deeper, fuller and more engaging flat-six exhaust note.

The long-tube headers influence exhaust tone, while the rear silencers control unwanted resonance.

6. Reduces Unwanted Cabin Drone

The performance silencers are specifically engineered to minimise the low-frequency resonance sometimes associated with aftermarket exhaust systems.

This helps maintain a more comfortable driving experience.

7. Reduces Exhaust Weight

The SOUL rear exhaust is approximately 15 lb lighter than the equivalent factory rear exhaust components, according to the manufacturer.

Additional weight savings may result from the replacement headers, although a verified total package weight reduction is not specified.

8. Provides Durable Exhaust Construction

The T304L stainless steel tubing, reinforced silencer casings and precision-fabricated headers are designed to withstand repeated heating, cooling and vibration.

9. Enhances Rear-End Styling

Different exhaust tip styles and finishes allow the vehicle's appearance to be personalised.





Why Upgrading Matters:

1. Complete Exhaust System Improvement

The package upgrades both the original exhaust manifolds and the rear exhaust assembly.

This provides a comprehensive solution rather than changing only the rear silencers.

2. Improved Exhaust Flow

The 1.75-inch long-tube primary runners, optimised collectors, HJS high-flow catalytic converters and mandrel-bent rear pipework work together to reduce unnecessary restrictions.

3. Enhanced Engine Responsiveness

More efficient exhaust flow may improve the way the naturally aspirated flat-six engine responds to accelerator input.

4. More Engaging Flat-Six Sound

The complete system delivers a deeper, sportier exhaust tone while retaining a controlled sound during normal driving.

5. Reduced Cruising Drone

The rear silencers are designed to minimise unwanted cabin resonance.

This provides a more balanced sound experience than many unrestricted race exhaust systems.

6. Premium HJS Catalytic Converters

The headers incorporate HJS 200-cell high-flow catalytic converters with a durable double-foil construction.

These provide catalytic exhaust treatment while supporting improved gas flow.

7. Lightweight Rear Exhaust

SOUL reports that its Performance Exhaust System weighs approximately 21.7 lb, compared with 36.6 lb for the factory rear exhaust.

This provides a saving of approximately 15 lb (6.8 kg) for the rear exhaust alone.

8. Stainless Steel Durability

The T304L stainless steel construction provides corrosion resistance and durability under demanding exhaust temperatures.

9. Reinforced Exhaust Mountings

The rear exhaust uses fortified silencer casings and strengthened brackets designed to resist vibration-related fatigue.

10. No Exhaust Valve Maintenance

The non-valved system avoids the added complexity of vacuum-operated exhaust valves and electronic valve controls.

11. Premium Exhaust Tip Options

Available tip configurations include stainless steel, double-wall chrome-style and lightweight titanium designs.

12. Direct Bolt-On Installation

SOUL tests its components in dedicated fitting fixtures to support accurate installation.

The package includes fitting instructions for the individual components.

13. Manufacturer Warranty Coverage

The stainless steel exhaust components benefit from SOUL's lifetime warranty, subject to the manufacturer's terms.

The HJS catalytic converters have separate three-year warranty coverage.