Exhaust› Exhaust Pipes, Systems and Components

Invidia

R400 Gemini Cat-Back Exhaust System

$2,480.80

SKU: INVHS08ST5GM4SS

In Stock
In Stock
Ships by Aug 3
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Invidia R400 Gemini Cat-Back exhaust system is the most aggressive stainless steel exhaust option available for the 2008-2014 Subaru WRX and STI Hatchback models. It features an innovative Gemini independent per-tip muffler design and a high-flow R400 construction, all crafted from durable 304 stainless steel. The individual muffler bodies of the Gemini R400 are designed to transmit the aggressive exhaust character of the EJ255 and EJ257 engines more clearly and powerfully than systems with shared mufflers. The polished stainless steel tips offer a bright, durable finish that complements the exterior of the GR chassis Subaru. The Invidia R400 Gemini is the performance-forward choice for builds where maximizing sound and exhaust flow are the top priorities. It includes all necessary sections, gaskets, hardware, and installation instructions for a complete cat-back system installation.

MIA's Description

The Invidia R400 Gemini Cat-Back exhaust system is designed for the 2008-2014 Subaru WRX and STI Hatchback models. It features a Gemini independent per-tip muffler design and a free-flowing R400 construction. This system utilizes 304 stainless steel and polished stainless steel tips for a durable and aggressive appearance.

The exhaust is engineered to provide maximum sound and performance for the GR chassis, allowing the distinct character of the EJ255 and EJ257 engines to be heard more clearly and aggressively. It is the loudest and most performance-focused stainless steel option available from Invidia for these Subaru models.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandInvidia
Part NumberINVHS08ST5GM4SS
CategoryExhaust

Buy with Confidence

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.

View Full Return Policy