Xforce | 3" Stainless Steel Downpipe Kit | Subaru WRX STI 08-21 & Forester XT 08-13 | ES-SW08-KITB

Xforce | 3" Stainless Steel Downpipe Kit | Subaru WRX STI 08-21 & Forester XT 08-13 | ES-SW08-KITB
Subaru WRX STI Forester XT EJ20 and EJ25 2008 to 2021 Downpipe kit - ES-SW08-KITB
Unlock the maximum potential of your turbocharged Boxer engine with the Xforce 3" Downpipe Kit. Specifically designed for EJ20 and EJ25 platforms, this kit replaces the highly restrictive factory downpipe to significantly reduce backpressure at the turbocharger. Featuring a high-quality cast bell-mouth dump pipe, it allows exhaust gases to exit the turbine wheel and wastegate more efficiently, resulting in faster turbo spool, increased horsepower, and improved throttle response.
Note: This downpipe is specifically designed to bolt up ONLY to an Xforce cat-back exhaust system. Engine ECU tuning is mandatory after installation to optimize performance and ensure engine safety.
What's in the Box?
- 1x Cast Stainless Steel Bell-Mouth Dump Pipe Section
- 1x 3" Polished Stainless Steel Pipe with 100-Cell Metallic Cat
- 1x Integrated Stainless Steel Flex Bellows
- Installation Gaskets and Hardware
Features:
This product offers the following high-performance features:
- Bell-Mouth Dump Design: The cast stainless steel top features a wide bell-mouth design to minimize turbulence from the internal wastegate and turbine outlet.
- 100-Cell Metallic High-Flow Cat: Equipped with a 100-cell metallic substrate catalytic converter, providing the highest possible flow while maintaining core efficiency.
- 3" Polished 304 Stainless Steel: Crafted from premium 304-grade stainless steel with a polished finish for superior corrosion resistance and a show-quality look.
- Stainless Steel Flex Bellows: Features integrated flex bellows to absorb engine movement and vibrations, preventing stress on the turbocharger flange and manifold.
- Precision Engineering: Designed for a precise fit on the EJ-series turbo platforms from 2008 through 2021.
Specifications:
- Make: Subaru
- Model: WRX / STI / Forester XT
- Engine: EJ20 / EJ25 Turbo
- Year Range: 2008 - 2021
- Material: 304 Stainless Steel
- Pipe Size: 3.0 Inch
Important Information
- System Compatibility: This kit is designed to bolt exclusively to Xforce cat-back systems.
- Tuning Required: ECU re-mapping is required immediately after installation.
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| SUBARU | ||||||||
| Subaru | WRX | 2008 | 2014 | Sedan / Hatch | GE / GH / GV / GR | 2.5L Turbo EJ25 | Standard / Premium | AWD |
| Subaru | WRX STI | 2008 | 2021 | Sedan / Hatch | GR / GV / VAB | 2.5L Turbo EJ257 | STI / Spec R | AWD |
| Subaru | Forester | 2008 | 2013 | SUV | SH | 2.5L Turbo EJ25 | XT | AWD |
| Product Type | Warranty Period |
|---|---|
| 304 & 201 Stainless Steel Exhaust Systems | 60 Months |
| Accessories | 12 Months |
| Catalytic Converters | 12 Months |
| Electronic Products (Including SmartBox) | 12 Months |
| Mild Steel & 409 Stainless Steel Exhaust Systems | 24 Months |
| Mild Steel Headers | 12 Months |
| Stainless Steel Headers | 24 Months |
| Universal 304 Stainless Steel Mufflers | 24 Months |
| Universal Mild Steel & 409 Stainless Steel Mufflers | 12 Months |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Subaru WRX STI Forester XT EJ20 and EJ25 2008 to 2021 Downpipe kit - ES-SW08-KITB
Unlock the maximum potential of your turbocharged Boxer engine with the Xforce 3" Downpipe Kit. Specifically designed for EJ20 and EJ25 platforms, this kit replaces the highly restrictive factory downpipe to significantly reduce backpressure at the turbocharger. Featuring a high-quality cast bell-mouth dump pipe, it allows exhaust gases to exit the turbine wheel and wastegate more efficiently, resulting in faster turbo spool, increased horsepower, and improved throttle response.
Note: This downpipe is specifically designed to bolt up ONLY to an Xforce cat-back exhaust system. Engine ECU tuning is mandatory after installation to optimize performance and ensure engine safety.
What's in the Box?
- 1x Cast Stainless Steel Bell-Mouth Dump Pipe Section
- 1x 3" Polished Stainless Steel Pipe with 100-Cell Metallic Cat
- 1x Integrated Stainless Steel Flex Bellows
- Installation Gaskets and Hardware
Features:
This product offers the following high-performance features:
- Bell-Mouth Dump Design: The cast stainless steel top features a wide bell-mouth design to minimize turbulence from the internal wastegate and turbine outlet.
- 100-Cell Metallic High-Flow Cat: Equipped with a 100-cell metallic substrate catalytic converter, providing the highest possible flow while maintaining core efficiency.
- 3" Polished 304 Stainless Steel: Crafted from premium 304-grade stainless steel with a polished finish for superior corrosion resistance and a show-quality look.
- Stainless Steel Flex Bellows: Features integrated flex bellows to absorb engine movement and vibrations, preventing stress on the turbocharger flange and manifold.
- Precision Engineering: Designed for a precise fit on the EJ-series turbo platforms from 2008 through 2021.
Specifications:
- Make: Subaru
- Model: WRX / STI / Forester XT
- Engine: EJ20 / EJ25 Turbo
- Year Range: 2008 - 2021
- Material: 304 Stainless Steel
- Pipe Size: 3.0 Inch
Important Information
- System Compatibility: This kit is designed to bolt exclusively to Xforce cat-back systems.
- Tuning Required: ECU re-mapping is required immediately after installation.
- The image shown may not reflect the actual product
- Shipping times may vary depending on destination and stock availability
Vehicle Applications:
| Make | Model | From | To | Body | Series | Engine | Variant | Drivetrain |
|---|---|---|---|---|---|---|---|---|
| SUBARU | ||||||||
| Subaru | WRX | 2008 | 2014 | Sedan / Hatch | GE / GH / GV / GR | 2.5L Turbo EJ25 | Standard / Premium | AWD |
| Subaru | WRX STI | 2008 | 2021 | Sedan / Hatch | GR / GV / VAB | 2.5L Turbo EJ257 | STI / Spec R | AWD |
| Subaru | Forester | 2008 | 2013 | SUV | SH | 2.5L Turbo EJ25 | XT | AWD |
| Product Type | Warranty Period |
|---|---|
| 304 & 201 Stainless Steel Exhaust Systems | 60 Months |
| Accessories | 12 Months |
| Catalytic Converters | 12 Months |
| Electronic Products (Including SmartBox) | 12 Months |
| Mild Steel & 409 Stainless Steel Exhaust Systems | 24 Months |
| Mild Steel Headers | 12 Months |
| Stainless Steel Headers | 24 Months |
| Universal 304 Stainless Steel Mufflers | 24 Months |
| Universal Mild Steel & 409 Stainless Steel Mufflers | 12 Months |
Payment & Security:
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.












