HKS 31019-AF019 Silent Hi-Power Cat-Back Exhaust for 05-09 Subaru Legacy GT

Vehicle Fitment

• 2005-2009 Subaru Legacy GT (BP) -- 2.5L EJ255 Turbo H4 (USDM)
• 2003-2009 Subaru Legacy 2.0GT (BP) -- 2.0L EJ20 Turbo H4 (JDM)

Fitment Notes

• Legacy GT Turbo models ONLY -- NOT for non-turbo Legacy
• BP chassis (4th generation Legacy)
• Includes rear section and center pipe
• Fits stock rear under-spoiler (wagon)
• Split rear exit -- dual tips
• Professional installation recommended

Features

• Silent Hi-Power series -- performance with reduced noise
• Moderate exhaust sound -- slight increase over stock
• Silent Chamber eliminates low-frequency cabin drone
• Race-inspired offset muffler and piping design
• Smooth bends for unobstructed exhaust gas path
• Improved throttle response and reduced turbo lag
• Increased horsepower and torque across powerband
• SUS304 stainless steel -- high lustre, long lasting
• Fully polished construction

Specifications

• Part Number: 31019-AF019
• Series: Silent Hi-Power
• System Type: Cat-back (rear section + center pipe)
• Muffler Style: HP (TYPE-H)
• Material: SUS304 stainless steel
• Center Pipe Diameter: 75mm to 60mm (3.0" to 2.4")
• Tip Diameter: 120mm (4.7") x 2
• Tip Quantity: 2 (dual)
• Exit Configuration: Split rear
• Weight: 57.76 lbs
• UPC: 4957266914878

Included Components

• Silent Hi-Power rear muffler section with dual HP tips
• Center pipe with Silent Chamber
• Mounting hardware and gaskets

Product Description

The HKS 31019-AF019 is a Silent Hi-Power cat-back exhaust system consisting of the rear section and center pipe for the 2005-2009 Subaru Legacy GT Turbo (BP chassis) with the 2.5L EJ255 turbocharged engine (USDM) or 2003-2009 2.0GT with the EJ20 turbo (JDM). The Silent Hi-Power was designed for enthusiasts seeking the highest quality performance exhaust with only a slight increase in exhaust noise over stock -- a conservative yet aggressive tone that delivers improved throttle response, reduced turbo lag, and increased horsepower and torque without the volume levels associated with traditional aftermarket exhausts.

HKS's proprietary Silent Chamber removes uncomfortable low-frequency noise that penetrates the cabin at cruising speeds. The closed-end chamber design allows only minimal exhaust gas to enter, meaning disruption to overall exhaust flow is negligible with no performance penalty. The race-inspired offset muffler and piping design eliminates unnecessary bends for the straightest possible exhaust path, and the slightly larger center pipe diameter (75mm to 60mm) provides an unobstructed exit for exhaust gases -- critical for turbocharged applications where greater exhaust velocity translates to better mid-range boost response and high-RPM power. Constructed entirely from fully polished SUS304 stainless steel with dual 120mm HP-style tips. Backed by HKS's 4-year exhaust system warranty.