Exhaust› Exhaust Pipes, Systems and Components

HKS

Hi-Power Cat-Back Exhaust System

$1,900.00

SKU: HKS31006-BF001

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The HKS Hi-Power cat-back exhaust is a performance exhaust system designed for the 2015+ Subaru WRX/STi. It is constructed from 304 stainless steel with polished blue tips and meets JASMA standards. This exhaust system weighs 33 pounds, compared to the stock exhaust's 46 pounds.
Show original supplier description
The HKS Hi-Power cat-back exhaust system is engineered for the 2015-2020 Subaru WRX and STi, aiming to enhance power, performance, and style. Constructed from durable 304 stainless steel with eye-catching polished blue tips, this exhaust meets JASMA standards for quality and compliance. This cat-back system features a 3-inch piping diameter that splits into dual 2.5-inch pipes, leading to a tip diameter of 3.8 inches (97mm). It is designed as a direct bolt-on replacement for the stock exhaust, utilizing OEM hangers and hardware for a straightforward installation process. The HKS Hi-Power exhaust weighs in at 33 pounds, offering a significant weight reduction compared to the stock exhaust's 46 pounds. Included with the cat-back exhaust are all necessary gaskets and hardware for installation. Please note that this item is considered oversized, and its shipping cost is factored into the overall price.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHKS
Part NumberHKS31006-BF001
CategoryExhaust

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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