XForce 3″ Turbo Back Exhaust System – Subaru Forester SF SG Turbo 1997-2008 – E4-SW15-MP02B-TBS

XForce 3″ Turbo Back Exhaust System – Subaru Forester SF / SG Turbo 1997-2008

Upgrade the exhaust system on your turbocharged Subaru Forester with the XForce 3″ Turbo-Back Exhaust System E4-SW15-MP02B-TBS.

Designed for the Subaru Forester SF and SG turbo platforms, this complete turbo-back performance exhaust replaces the restrictive factory exhaust from the turbocharger outlet rearwards. The large-bore 3-inch exhaust system is engineered to improve exhaust gas flow while delivering the distinctive, deeper Subaru boxer exhaust note enthusiasts expect from a performance system.

Manufactured from durable raw-finish 409 stainless steel, the XForce system combines performance-focused construction with excellent resistance to the demanding temperatures encountered in turbocharged applications.

Key Features

• Genuine XForce Performance Exhaust system
• Complete turbo-back exhaust system
• 3-inch / approximately 76mm pipe diameter
• Raw-finish 409 stainless steel construction
• Bell-mouth dump/downpipe
• Cast dump-pipe top section
• 100-cell high-flow metallic catalytic converter
• Centre hot-dog style resonator
• Oval rear performance silencer
• Large single 4.5-inch exhaust tip
• Designed for Subaru Forester SF / SG turbo applications
• Performance-focused exhaust gas flow
• Suitable for modified and tuned vehicles
• SKU: E4-SW15-MP02B-TBS

Performance Benefits

The standard exhaust fitted to a turbocharged vehicle can create a restriction in the exhaust path. The XForce turbo-back system uses larger 3-inch pipework to provide a freer-flowing route for exhaust gases from the turbocharger through to the rear silencer.

Reducing exhaust restriction can be particularly beneficial on modified turbocharged Foresters where increased airflow and boost create greater exhaust gas volume.

Potential benefits when used as part of a correctly configured performance setup include:

• Improved exhaust gas flow
• Reduced exhaust restriction
• Improved turbo response
• Sharper throttle response
• Greater potential for tuned engine performance
• Deeper and more aggressive exhaust tone

Actual performance gains will depend on the vehicle specification, engine condition, ECU calibration and other supporting modifications.

3-Inch Turbo-Back Design

Unlike a conventional cat-back system, this XForce system replaces the exhaust from the turbocharger outlet backwards.

The system incorporates a performance bell-mouth dump pipe and large 3-inch pipework, making it particularly suitable for owners carrying out more comprehensive upgrades to their Subaru Forester.

The bell-mouth design allows exhaust gases leaving the turbocharger to expand into a larger exhaust section rather than immediately entering restrictive factory-size pipework.

100-Cell High-Flow Metallic Catalyst

A 100-cell high-flow metallic catalytic converter is incorporated into the exhaust system.

The low-density catalyst is designed to provide significantly less restriction than many conventional OE catalytic converters, helping maintain exhaust flow through the turbo-back system.

Because this is a performance-orientated 100-cell system, customers should check emissions and MOT requirements applicable to their vehicle before purchase or installation.

Centre Resonator & Rear Silencer

XForce combines the large-bore pipework with a centre hot-dog resonator and an oval rear performance silencer.

This arrangement helps create a deeper and sportier Subaru boxer exhaust tone while controlling some of the harshness associated with completely unsilenced large-bore exhaust systems.

At the rear, the system is finished with a substantial single 4.5-inch exhaust tip, giving the Forester a purposeful performance appearance.

409 Stainless Steel Construction

The exhaust is manufactured using 409-grade stainless steel, a material commonly used in performance and OE exhaust applications because of its heat and corrosion resistance.

The system has XForce’s raw stainless-steel finish, creating a functional motorsport-inspired appearance beneath the vehicle.

Subaru Forester Compatibility

This exhaust system is designed for turbocharged Subaru Forester SF and SG applications within the 1997-2008 model range.

Typical UK applications include early Forester S-Turbo models and later turbocharged Forester XT derivatives.

Important: Exhaust configuration can vary between markets, model years, imported vehicles and previously modified cars. We strongly recommend checking the existing exhaust layout before ordering.

Tow Bar Warning

This exhaust system will NOT fit vehicles equipped with a tow bar.

If your Subaru Forester currently has a tow bar installed, contact us before ordering.

Motorsport / Off-Road Use

Please note: this product is specified by XForce for track and off-road use only.

The system incorporates a 100-cell high-flow catalytic converter and may not comply with UK road-going emissions or noise requirements for every vehicle.

It is the purchaser’s responsibility to ensure that the vehicle complies with all applicable road, MOT, emissions and noise regulations.

Ideal For

This XForce system is particularly suitable for:

• Subaru Forester performance builds
• Tuned Forester S-Turbo models
• Turbocharged Forester XT builds
• ECU-remapped vehicles
• Higher-flow intake and intercooler upgrades
• Upgraded turbocharger installations
• Fast-road builds where regulations permit
• Track-day vehicles
• Motorsport and off-road applications

Product Specification

Brand: XForce
Manufacturer Part Number: E4-SW15-MP02B-TBS
Product Type: Turbo-Back Exhaust System
Vehicle: Subaru Forester
Chassis: SF / SG
Pipe Diameter: 3″ / approximately 76mm
Material: 409 Stainless Steel
Finish: Raw Stainless Steel
Catalyst: 100-Cell High-Flow Metallic Cat
Centre Section: Hot-Dog Resonator
Rear Silencer: Oval Performance Muffler
Exhaust Tip: Single 4.5″ Tip
Tow Bar Compatible: No
Application: Performance / Track / Off-Road Use

Why Choose XForce?

XForce specialises in performance exhaust systems developed for enthusiast and modified vehicles. Their exhaust systems combine increased exhaust flow with vehicle-specific designs, making them a popular upgrade for turbocharged Japanese performance cars.

For Subaru Forester owners looking for more than a simple rear silencer or cat-back upgrade, the XForce E4-SW15-MP02B-TBS turbo-back system provides a comprehensive exhaust upgrade from the turbocharger rearwards.

Compatibility Advice

If you are unsure whether this system is suitable for your Subaru Forester, please contact Performance Cars Parts with your:

• Registration number
• Model year
• Engine size
• Exact model / trim
• UK vehicle or Japanese import
• Details of any existing exhaust modifications
• Confirmation of whether a tow bar is fitted

We can then help confirm compatibility before ordering.

The UK-market naming needs a little care. The first-generation UK Forester used the S-Turbo name, while the later SG-generation UK range included turbocharged XT/XTen-type variants; RAC records the 2.5-litre turbo XT entering the UK range in autumn 2004. Because XForce’s official catalogue identifies the application more broadly as 1997–2008 SF/SG GT, I recommend keeping the manufacturer application as the primary fitment and treating individual UK trim names as compatibility-search terms rather than claiming every UK turbo derivative without checking the exhaust layout.