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Cobb 11-21 Subaru WRX/STI GV/VA Sedan Catback Exhaust

COBB
COBB515160
731946517719
Catback
Out of stock
Catback, COBB, Exhaust Systems
$ 1,565.00

SKU: B515160   |   UPC: 731946517719

Cobb 11-21 Subaru WRX/STI GV/VA Sedan Catback Exhaust

The COBB Catback Exhaust replaces the entire exhaust system from the catalytic converter back on 2011-2021 Subaru WRX and STI Sedan models (GV/VA chassis). Mandrel-bent 3-inch T304L stainless steel tubing improves exhaust flow for gains in horsepower, torque, and throttle response. Paired with high-flow mufflers and dual 4-inch tips, it produces a deep turbocharged growl without excessive drone.

Key Features

  • T304L Stainless Steel Construction: Corrosion-resistant material built for daily driving and track durability with lifetime structural integrity.
  • Mandrel-Bent 3" Piping: Smooth, continuous bends from cat to tips ensure unrestricted flow and dyno-proven power increases up to 12 whp.
  • Resonated Mufflers: Dual high-flow units tame cabin drone on highways while amplifying turbo spool and exhaust note under acceleration.
  • 4" Polished Dual Tips: Angled slash-cut design adds visual aggression matching the WRX/STI sedan stance.
  • Weight Reduction: 42.5 lbs system weighs 12.5 lbs less than stock for quicker acceleration and sharper handling.

Product Notes

  • Direct bolt-on design retains stock catalytic converter compatibility.
  • Clean with mild soap avoid abrasive cleaners to preserve finish.

Installation Notes

  • Professional installation recommended.
  • Bolt-on fit using stock hangers no welding or cutting needed, 2-3 hours labor.
  • Torque all clamps to 40-45 ft-lbs includes new gaskets and hardware.

This Part Fits

Year Make Model Submodel
2011-2014 Subaru Impreza WRX Sedan
2015-2021 Subaru WRX Sedan
2015-2021 Subaru WRX STI Sedan

Why Choose COBB?

  • Subaru specialists with 25+ years developing WRX/STI bolt-ons.
  • In-house dyno testing verifies real-world power and sound gains.
  • Precision engineering for seamless fit with Accessport tuning.

Frequently Asked Questions

  • Q: Will this exhaust fit my 2018 WRX STI Sedan?
    A: Yes, direct bolt-on for all 2015-2021 VA-chassis WRX STI Sedans using factory midpipe and cat.
  • Q: What material and pipe size are used?
    A: Full T304L stainless steel with mandrel-bent 3-inch diameter piping throughout for flow and strength.
  • Q: What warranty coverage applies?
    A: Limited lifetime warranty against manufacturing defects register product on COBB site for full protection.

Shipping & Handling

  • Method: UPS Ground or Freight
  • Availability: In stock - ships same or next business day
  • Packaging: Single box dimensions 49" x 15" x 15"
  • Weight: 50 lbs shipping weight

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