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Performance Catted Down-Pipe (15-21 WRX STI)
Item TL-673942
Our Price
$344.99
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Product Information
Features, Description, Q&A
Features
- Surface Finish Brushed Silver
- Material T-304 Stainless Steel
- Diameter 3.00 Inches
- Type Downpipe
- Compatible With Factory Or Most Aftermarket Front Pipe Without Adapter
- Includes High-Flow 300 Cell Catalytic Converter
- Features Fully Machined And Contoured Flanges
- Option for Black Ceramic Coating Available Separately
- Designed To Replace Restrictive OEM Catalytic Converters
- Improves Power Potential By Reducing Exhaust Restriction
- Machined Flanges And Contoured Tubes Provide Smooth Transitions For Tighter Boost Control
- Brushed Finish Provides Uniform Refined Appearance
- May Cause ‘Cat Converter Efficiency’ Check Engine Light Without Tuning Or Mechanical Fix
- Intended For Off-Road Racing Applications Only
- Not Available For Shipment To California Due To Vehicle Code Restrictions
- Fits 15-21 WRX STI Off-Road Use Only, May Trigger Check Engine Light
Description
Performance Upgrade. The Performance Catted Down-Pipe is engineered to replace the factory restrictive catalytic converters that limit engine power on multiple Subaru models. This downpipe enhances exhaust flow, resulting in increased horsepower and improved boost response for racing applications.
Construction and Appearance. Made from durable T-304 stainless steel, the downpipe features a brushed silver finish that offers corrosion resistance and a refined look. It includes fully machined and contoured flanges for precise fitment, along with brushed tubes for a uniform appearance. The included high-flow 300 cell catalytic converter balances performance gains with some emissions control.
Installation. Installation requires basic mechanical skills and features a bolt-on design compatible with factory or most aftermarket front pipes without adapters. No drilling is necessary.
Warranty. A 90-day limited warranty covers manufacturer defects in materials and workmanship from the date of purchase.
Application. Specifically fits the 2015 to 2021 Subaru WRX STI models designed for off-road use only. Installation may trigger a check engine light unless tuning or a mechanical fix is applied. Shipment to California is prohibited due to state emissions regulations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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