Cobb 15-20 Subaru STI Redline Carbon Fiber Intake System - Gloss Finish

COBB
COBB725350
700424678808
Cold Air Intakes
20+ Units In Stock - Ships Next Business Day
$ 875.00
$ 875.00

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

Request For Information

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