What material is the HKS Hi-Power 409 exhaust made from?

This exhaust system is constructed from SUS304 stainless steel. This material is chosen for its strength and resistance to corrosion, making it suitable for the demanding environment under a vehicle.

What is the piping diameter of this cat-back exhaust?

The HKS Hi-Power 409 exhaust features a 60mm piping diameter. This size is specifically chosen to balance exhaust gas flow with the necessary backpressure for the RB25DET engine.

What parts are included in this cat-back exhaust system?

This cat-back system includes the exhaust piping and muffler assembly, starting from the catalytic converter back to the exhaust tip. It is designed to replace the factory components in that section.

HKS Hi-Power 409 Cat-Back Exhaust RB25DET 31006-AN015

Name: HKS Hi-Power 409 ER34 2dr RB25DET
Brand: HKS
SKU: hks-hks-hi-power-409-er34-2dr-rb25det-t14-113229
Price: 797.70 USD
Availability: InStock

HKS Hi-Power 409 ER34 2dr RB25DET

$797.70

Only 5 left in stock

HKS Hi-Power 409 cat-back exhaust for ER34 2dr RB25DET.

Key Features

Fits ER34 2-door models with RB25DET engine.
Features a 60mm piping diameter for optimized exhaust flow and backpressure.
Constructed from durable SUS304 stainless steel for corrosion resistance.
Produces a distinctive, aggressive exhaust tone.
Designed to improve throttle response and horsepower.
Replaces the factory cat-back exhaust section for a direct fit.

Secure CheckoutFast Shipping631-982-0042

Product Details

The 60mm piping diameter on this HKS Hi-Power 409 cat-back exhaust is a key design choice for the RB25DET engine. This size is carefully selected to balance exhaust flow with maintaining adequate backpressure, which is important for optimal performance and torque delivery from the factory turbocharger. This system is built for the ER34 2-door model, ensuring a direct fit without the need for extensive modifications.

Constructed from SUS304 stainless steel, this exhaust is well-built to resist corrosion and withstand the heat and vibrations typical of performance driving. The Hi-Power 409 series is known for its distinctive, aggressive tone that many enthusiasts appreciate, while still aiming to remain within reasonable sound levels for street use. The muffler design is optimized for efficient gas expulsion, contributing to improved throttle response and a noticeable increase in horsepower, especially in the mid to upper RPM range. Installation is designed to be straightforward, replacing the factory cat-back section with minimal fuss.

This cat-back system includes the muffler and piping from the catalytic converter back. It's a popular choice for those looking to enhance the sound and performance of their RB25DET-powered ER34. While this system is designed for improved flow and sound, it's always a good idea to check local emissions regulations to ensure compliance in your area.