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HKS 32009-BN004 Hi-Power Cat-Back Exhaust System

Manufacturer

HKS

<h3>HKS: Japan's Premier Aftermarket Performance Brand</h3><p><strong>HKS</strong> is one of the most recognized names in automotive performance tuning, and its reputation was built the old-fashioned way — through engineering innovation, motorsport competition, and decades of earned trust. Founded in 1973 and named after its founders Hasegawa, Kitagawa, and Sigma Automotive, the company began operations tuning gasoline engines in a modest dairy-farming shed at the foot of Mount Fuji, Japan. From those humble origins, HKS grew into a publicly traded, globally distributed manufacturer whose products are sold and raced across Asia, Europe, Australia, and the Americas.</p><p>The brand's early breakthrough came just a year after its founding, when co-founder Hiroyuki Hasegawa — a former Yamaha Motor Company engineer — designed and built the first aftermarket turbocharger for passenger cars. That pioneering spirit never faded. HKS went on to develop the first commercially available electronic turbo timer and boost controller, cementing its role as a trailblazer in the Japanese aftermarket performance industry. Today, the company's in-house research and development facility continues operating at the foot of Mount Fuji, where every product is engineered and manufactured to meet exacting quality and safety standards.</p><p>HKS is defined by what it calls &quot;Total Balance Tuning&quot; — a philosophy that no single component should be optimized in isolation. Power, handling, exhaust flow, and electronics all work together, and HKS designs products across all of these systems to complement each other. Whether a driver is pursuing light street modifications or building a dedicated track weapon, HKS offers a complete lineup that spans the full spectrum of performance tuning.</p><p>The brand's motorsport heritage is equally impressive. Since the 1980s, HKS has competed in time attack, drag racing, JGTC, Formula 3, D1 Grand Prix, and more. HKS-equipped vehicles have captured numerous racing championships, and many of those results were achieved with components available directly off the shelf. That race-proven pedigree carries directly into the street products enthusiasts buy today.</p><p>Among HKS's most popular product lines are its <a href="/903-hks-coilover-adjustable-spring-lowering-kit-17602">coilover adjustable spring lowering kits</a>, which deliver precisely tunable ride height and damping for both street and track use. Alongside these, HKS <a href="/903-hks-exhaust-system-kit-10727">exhaust system kits</a> are a long-standing staple of the brand — developed with deep knowledge of exhaust flow dynamics accumulated through decades of motorsport involvement. Rounding out the chassis and dynamics side of the lineup are HKS <a href="/903-hks-suspension-kit-10922">suspension kits</a>, engineered to improve cornering stability and handling response without sacrificing everyday drivability.</p><p>HKS products are also deeply embedded in popular culture. HKS-tuned vehicles have appeared in the Gran Turismo, Forza, and Need for Speed video game franchises, and have been featured in the <em>Fast and the Furious</em> film series — a testament to the brand's crossover appeal and global recognition. For enthusiasts who want performance parts with a genuine racing pedigree and over 50 years of engineering refinement behind them, HKS remains an unmatched choice.</p>

Part Number

32009-BN004
09/11/2036 10:12 PM
Sale Price

$2,500.00

In Stock (10+)

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Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The HKS Hi-Power Exhaust System brings race-proven engineering from Japanese endurance and GT competition to street performance vehicles. This cat-back exhaust system features an innovative offset muffler design and optimized piping layout that maximizes exhaust flow by eliminating unnecessary bends, creating the straightest possible exhaust path for improved high-RPM power gains.

Key Features:

  • Race-inspired offset muffler design for maximum flow efficiency
  • Straight-through piping minimizes restrictions and backpressure
  • Large-diameter tubing enhances exhaust velocity for turbocharged applications
  • Improves mid-range boost response and top-end power on forced induction engines
  • Increases exhaust flow capacity for naturally aspirated builds
  • Constructed from premium SUS304 stainless steel for durability and corrosion resistance
  • Polished stainless steel tip assembly for show-quality appearance

For turbocharged vehicles, the Hi-Power's large-diameter piping and smooth bends allow faster exhaust gas evacuation, resulting in quicker turbo spool and stronger mid-range boost response. Naturally aspirated engines benefit from reduced backpressure and increased flow capacity, especially important for modified engines with higher power output. The precision-engineered SUS304 stainless steel construction ensures long-lasting performance and resistance to heat and corrosion.

Products specifications

Piping

60mm

Tip

120mm

Cake

No complaints

fast and easy.

Quick &amp; Easy Good price!!

Easy to use check out and great price.

I have not yet used the product but expect to be fully satisfied.

Great service,received in two days

They have the best prices and fast shipping too.

It was good!

Great price and fast shipping!

Fast shipping, the exhaust fit perfectly and sounds great!

Best price I could find! Great customer service kept me informed through the whole order process to insure acuracy since it was being sent directly from the manufacture. Recieved my order in good time, right parts and no damage. Overall very satisfied and will be doing business again in the future.

Very competitive low prices and great product selection. Will definitely look to this vendor when purchasing automotive parts in the future.

Although there was a mix up with the shipping on my order customer service was helpful and expedited the solution and made it worth my trouble. I will be keeping Autoplicity in mind for any other parts I might need for my Jeep.

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