HKS Hi-Power 409 GC8 EJ20 - Black Ops Auto Works
HKS31006-AF009-HKS GR Supra Hi-Power 409 GC8 EJ20-Catback-HKS
HKS31006-AF009-HKS GR Supra Hi-Power 409 GC8 EJ20-Catback-HKS
Click to zoom in

HKS GR Supra Hi-Power 409 GC8 EJ20

HKS
HKS31006-AF009
4957266915974
Catback
15 Units In Stock - Ships Next Business Day
$ 1,100.00
FREE Ground Shipping!
$ 1,100.00

SKU: 31006-AF009 | UPC: 4957266915974

HKS Hi-Power 409 Muffler Subaru Impreza GC8 EJ20 Turbo 1993-1999

The HKS Hi-Power 409 muffler delivers precise engineering for Subaru Impreza GC8 models with EJ20 Turbo engines from November 1992 to August 1999. This catback system fits 2-door sedan configurations and upgrades stock exhaust with larger piping for freer flow and aggressive tone. Expect noticeable gains in throttle response and horsepower alongside a deep motorsport growl at 98dB idle.

Key Features

  • 409 Stainless Steel Construction: SUS409 main material resists corrosion and withstands high heat for long-term durability on street or track.
  • 75mm Center Pipe: Largest diameter section improves exhaust scavenging and reduces backpressure for better engine breathing and power delivery.
  • 120mm Tip Diameter: Rolled edge outlets provide clean styling and efficient gas expulsion without drone.
  • 98dB Close Noise Level: Certified under 03S09539 rises from stock 87dB for thrilling presence while meeting Japanese regulations.
  • 105mm Road Clearance: Measured at main pipe suits lowered setups delivering 105mm minimum without scraping.

Product Notes

  • Made to order item allows custom production for perfect fit.
  • Applies to 2-door model G variants of GC8 chassis.
  • Exhaust noise certified at idle for legal compliance in Japan.

Installation Notes

  • Professional installation recommended.
  • Bolt-on design uses factory mounts on GC8 chassis.
  • Verify suspension height as data reflects stock or lowered configurations.

This Part Fits

Year Make Model Submodel
1993-1999 Subaru Impreza GC8 EJ20 Turbo 2-Door

Why Choose HKS?

  • Decades of JDM tuning experience powers every component.
  • Lightweight designs shed stock weight for quicker acceleration.
  • Made in Japan with exact tolerances for GC8 platforms.

Frequently Asked Questions

  • Q: Will this fit my GC8 Impreza WRX?
    A: Yes for 2-door EJ20 Turbo models built November 1992 to August 1999. Confirm chassis code GC8 and sedan body.
  • Q: What material is used and does it rust?
    A: Full SUS409 stainless steel body and piping provides strong rust resistance even in harsh weather.
  • Q: What warranty covers this muffler?
    A: HKS offers defect warranty through authorized distributors. Contact seller for details.

Shipping & Handling

  • Method: UPS or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Securely boxed to protect components during transit
  • Weight: 11.7 kg (25.8 lbs)

Request For Information

Have questions about HKS GR Supra Hi-Power 409 GC8 EJ20? Fill out the form below and we'll get back to you by the next business day.
Catback

Catback

A catback exhaust system replaces everything from the catalytic converter back, covering the mid pipe, muffler, and tailpipe section in one bolt on upgrade. This collection covers catback systems for trucks, Jeeps, muscle cars, imports, and performance SUVs, giving you a straightforward way to improve sound, exhaust flow, and rear end styling without touching the factory catalytic converters or front pipe. Catback systems are available in stainless steel and titanium construction, with dual rear exit, single exit, and quad tip configurations, and a range of sound levels from mild touring tone to aggressive track character. Whether you want a deeper daily driver sound or a full track ready exhaust note, you will find a matched system for your platform here. What This Category Covers This collection includes complete catback exhaust systems, cat-back kits, dual rear exit systems, axle back adjacent catback upgrades, stainless steel and titanium exhaust systems, and street, tourin...

View Catback Products
Exhaust Systems

Exhaust Systems

Performance exhaust systems for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop cat-back systems, axle-back systems, turbo-back systems, headers, downpipes, mid-pipes, mufflers, resonators, catalytic converters, exhaust tips, exhaust valve controllers, oxygen sensors, exhaust brakes, and motorcycle and powersports exhausts for Mustang, Camaro, Challenger, Corvette, Silverado, and Super Duty platforms. Every product is filterable by exhaust position, material, pipe diameter, and vehicle year, make, model, and trim so the correct fitment ships the first time. Black Ops Auto Works carries 7,441 exhaust SKUs across every position of the exhaust system. What This Category Covers Exhaust upgrades change sound, appearance, and in some cases power. Exhaust fitment depends on engine, drivetrain, and factory exit position, so confirm the exact platform before ordering any exhaust component. Exhaust Position Cat-back, axle-back, turbo-back, and header-back systems e...

View Exhaust Systems Products
HKS

HKS

HKS Japanese performance parts for Toyota Supra, Nissan Skyline GT-R, Nissan Silvia and 240SX, Subaru WRX and STI, and other JDM platforms are stocked at Black Ops Auto Works. Shop turbo kits, cat back exhaust systems, coilovers, blow off valves, and engine management upgrades for RB26DETT, SR20DET, 2JZ-GTE, and EJ series turbocharged engines. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 607 HKS SKUs across forced induction, exhaust, suspension, and engine management categories. What This Collection Covers HKS has built its reputation on Japanese sport compact and sports car performance since the late 1970s, developing turbo kits, exhaust systems, and suspension for platforms including the Toyota Supra 2JZ-GTE, Nissan Skyline GT-R RB26DETT, Nissan Silvia and 240SX SR20DET, and Subaru WRX and STI EJ and FA series engines. This collection brings together fitment verified HKS pa...

View HKS Products
Toyota GR Supra Parts & Accessories

Toyota GR Supra Parts & Accessories

Toyota GR Supra Parts & Accessories Toyota GR Supra A90 and A91 parts and accessories for 2020+ 2.0T and 3.0T models are stocked at Black Ops Auto Works. Shop cat-back exhausts, downpipes, air intake systems, intercooler kits, turbo components, coilovers, big brake kits, carbon fiber parts, wheels and track-ready upgrades for the modern Supra. Every product is filterable by year, make, model, trim, engine and drivetrain so the correct A90 or A91 application can be selected before ordering. Black Ops Auto Works carries 127 Toyota GR Supra SKUs across exhaust, intake, cooling, turbo, suspension, braking, wheels and exterior styling. What This Toyota GR Supra Parts & Accessories Collection Covers This vehicle-specific collection covers the fifth-generation Toyota GR Supra, including 2.0L four-cylinder and 3.0L B58 turbocharged six-cylinder models. Product listings may differ by model year, engine, transmission, brake package and exterior trim, so use the vehicle filter and ...

View Toyota GR Supra Parts & Accessories Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×