HKS Silent Hi-Power Cat-Back Exhaust System - Subaru Impreza WRX / STI GDA, GDB & GGA EJ20 Turbo (2000-2007)

Name: WRX /STI 00-07 HKS Silent Hi-Power Catback
Brand: HKS
SKU: 31019-AF023
Price: 1487 EUR
Availability: InStock

The HKS Silent Hi-Power Cat-Back Exhaust System is designed for the Subaru Impreza WRX, WRX STI, and Sport Wagon models equipped with the turbocharged EJ20 engine. It offers an ideal combination of enhanced performance, everyday driving comfort, and a deep, sporty exhaust note. Developed for enthusiasts who want improved exhaust performance without excessive noise, it is equally suited to daily-driven and performance-oriented vehicles.

The straight-through design, featuring 75 mm main piping, reduces back pressure and improves exhaust flow, allowing the engine to breathe more efficiently. This results in improved throttle response, more efficient cylinder scavenging, and a broader, more usable powerband while enabling the turbocharger to operate more efficiently throughout the rev range.

The system incorporates HKS Silent Chamber Technology, which minimizes low-frequency cabin noise and unwanted resonance without compromising performance. The oval Silent Hi-Power Type-S muffler produces a deep, refined exhaust note that delivers a sporty character while maintaining excellent comfort for everyday driving.

Manufactured from SUS304 stainless steel, the exhaust system provides excellent heat resistance, outstanding corrosion resistance, and long-lasting durability. It is finished with a 120 mm exhaust tip and is designed as a direct replacement for the factory exhaust system, offering OEM-style fitment for straightforward installation.

Features

Fits the Subaru Impreza WRX GDA, WRX STI GDB, and Sport Wagon GGA (2000–2007) with the turbocharged EJ20 engine.
Complete Silent Hi-Power cat-back exhaust system.
Manufactured from SUS304 stainless steel.
Straight-through design with 75 mm main piping.
Oval Silent Hi-Power Type-S muffler.
120 mm exhaust tip.
Reduced back pressure and improved exhaust flow.
Improved throttle response, more efficient cylinder scavenging, and a broader, more usable powerband.
HKS Silent Chamber Technology reduces cabin noise and unwanted resonance.
Deep, sporty exhaust note with excellent everyday driving comfort.
Direct replacement with OEM-style fitment.

Product video

Technical specification

Article nr:

31019-AF023

Manufacture Partnumber:

31019-AF023

In October 1973, two talented and young engineers had a vision; to design and build high performance engines and components that major OE manufacturers could not, or would not, produce. HKS pioneered the Japanese aftermarket industry by delivering a host of exciting new products, including the first commercially available electronic turbo timer and boost controller. Other early products included piggy-back ECUs and sophisticated fuel management tools. HKS was clearly driving performance trends for Japanese vehicles forward!

Today, HKS is one of the world's most well-known brands and the obvious choice for you who builds a JDM car. In the assortment you will find everything from chassis products to exhaust systems and turbo kits. HKS is behind some of the coolest builds and professional drivers in the world, so when you choose HKS, you choose the best.