SKU: HS15SWMDOC
Invidia 2015-2021 Subaru WRX Manual Transmission Downpipe with High Flow Cat
Upgrade your 2015-2021 Subaru WRX manual transmission with the Invidia HS15SWMDOC downpipe featuring a high flow catalytic converter. This direct bolt-on part replaces the restrictive factory downpipe to improve exhaust flow and deliver noticeable gains in horsepower and torque. Crafted for precise fitment on VA chassis WRX models it enhances throttle response and engine sound.
Key Features
- T304 Stainless Steel Construction: Mandrel bent 3-inch piping resists corrosion and maintains shape for consistent long-term performance.
- High Flow Metallic Catalytic Converter: Reduces exhaust restriction to increase power output while meeting EPA testing standards.
- Pre-Welded O2 Sensor Bung: Ensures compatibility with factory oxygen sensors for seamless plug-and-play installation.
- Dyno Proven Gains: Delivers up to 12 wheel horsepower and 15 ft-lbs torque increases on stock tune WRX engines.
- Gasket and Hardware Included: Provides everything needed for a leak-free direct bolt-on replacement.
Product Notes
- Designed exclusively for manual transmission models check your drivetrain before purchase.
- High flow cat supports off-road use and emissions testing where applicable.
- Ships fully assembled ready for immediate installation.
Installation Notes
- Professional installation recommended.
- Requires removal of factory downpipe heat shielding use new crush gaskets for secure seal.
- Compatible with stock exhaust manifold and cat-back systems no cutting or welding needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2016 | Subaru | WRX | Base |
| 2015-2016 | Subaru | WRX | Limited |
| 2015-2016 | Subaru | WRX | Premium |
| 2017-2021 | Subaru | WRX | Base |
| 2017-2021 | Subaru | WRX | Limited |
| 2017-2021 | Subaru | WRX | Premium |
Why Choose Invidia?
- Established Japanese exhaust manufacturer with motorsport heritage.
- Uses premium T304 stainless steel for durability and heat resistance.
- Engineered for exact OEM fitment with extensive dyno testing.
Frequently Asked Questions
- Q: Does this fit 2015-2021 Subaru WRX with CVT?
A: No this downpipe fits manual transmission only CVT models require a different part number. - Q: What material is the piping made from?
A: Full T304 stainless steel construction with mandrel bends for smooth flow and mirror-polished finish. - Q: Is professional installation required and what tools are needed?
A: Professional install recommended basic tools sockets jack stands and OBD scanner for any check engine light reset suffice.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed 42 x 11 x 10 inches
- Weight: 11.5 lbs
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