SKU: B725350 | UPC: 700424678808
Cobb 15-20 Subaru STI Redline Carbon Fiber Intake System – Gloss Finish
The Cobb Redline Carbon Fiber Intake System replaces the restrictive factory airbox on 2015-2020 Subaru WRX STI models with a high-flow carbon fiber setup. This bolt-on system increases airflow for dyno-proven gains of up to 20 whp and 15 ft-lbs torque while reducing intake temperatures. Drivers experience sharper throttle response and stronger mid-range power on the EJ257 engine.
Key Features
- Gloss Carbon Fiber Tube: 3.5-inch diameter mandrel-bent tubing weighs just 3.7 lbs (stock 10.1 lbs) for major weight savings at the front end.
- COBB SF High-Flow Filter: Dry oiled filter flows 35% more air than stock with reusable design for long-term performance.
- Integrated Heat Shield: Shields incoming air from engine bay heat to maintain dense, cool air charge for consistent power.
- Precise Fitment: Direct bolt-on design uses factory mounting points with included silicone couplers and clamps for seamless install.
- Dyno-Tested Gains: Delivers +20 whp peak and broader torque curve across RPM range, verified on Cobb Accessport dyno.
Product Notes
- EPA compliant for all 50 states with no emissions restrictions.
- Clean filter every 15,000 miles using COBB service kit for peak airflow.
- Ships in protective foam-lined box to prevent damage to gloss finish.
Installation Notes
- Professional installation recommended.
- Basic hand tools required completes in 1-2 hours for experienced installers.
- Includes all necessary hardware, couplers and T-bolt clamps for direct replacement.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2020 | Subaru | WRX STI | All |
Why Choose Cobb?
- Over 25 years engineering Subaru performance parts in the USA.
- Bolt-on systems designed and dyno-tested for real-world gains.
- Lifetime limited warranty on intake tubing and components.
Frequently Asked Questions
- Q: Will this fit my 2015-2020 Subaru STI with factory turbo?
A: Yes, direct fit for all USDM 2015-2020 WRX STI models with EJ257 engine; no modifications needed. - Q: What material and finish does the intake use?
A: Hand-laid carbon fiber weave with high-gloss clear coat for lightweight strength and show-car appearance under the hood. - Q: Does installation require a tune or custom work?
A: Fully bolt-on with no tune required, though pairing with Cobb Accessport unlocks full potential.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure foam-lined box, 22″ L x 13″ W x 10″ H
- Weight: 7 lbs shipping / 3.7 lbs product
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