Kinugawa Turbo Power Driven Divorced Downpipe — Subaru WRX & STI (2008–2020)

The Kinugawa Turbo Power Driven Divorced Downpipe is a direct bolt-on exhaust upgrade engineered for the 2008–2014 Subaru WRX and 2008–2020 STI. Built from full 3-inch mandrel-bent stainless steel with a 200-cell high-flow metallic catalytic converter, it delivers measurably improved turbo spool, exhaust flow, and an aggressive yet refined exhaust note — without sacrificing street drivability. Verified by real-world owners running setups from stock to Cobb NexGen Stage 2 with flex fuel.

Application

2008–2014 Subaru WRX
2008–2020 Subaru STI
2005–2009 Legacy GT (Non-VF46, Manual Trans Only)
2009–2013 Forester XT

Key Features

Full 3.0" mandrel-bent stainless steel piping
200-cell high-flow metallic catalytic converter (standard)
CNC-machined flanges at .38" thickness for precise fitment
One-piece TIG-welded construction for long-term durability
Direct bolt-on using stock ball joints and clamps
Includes all gaskets & hardware
Additional O₂ bung for wideband sensor compatibility
Divorced downpipe design for optimal exhaust flow separation
Compatible with stock cat-backs (exhaust adapter flange recommended)
ECU tune recommended for best performance results
1-Year Kinugawa Trouble-Free Warranty

What Owners Are Saying

"Product looked great and installation was super simple and a breeze. Has a good sound to it as well. Good product for the money!" — Tyler, United States ⭐⭐⭐⭐⭐

"Bought this with the high-flow cat. Sounds great and works great with Cobb NexGen Stage 2 power package + NexGen flex fuel kit. No check engine lights after tuning." — Michael A., United States ⭐⭐⭐⭐⭐

"I had zero problems getting it on and it works perfectly. Almost the same sound as catless but you can hear the turbo spool more. 10/10." — Anonymous Owner ⭐⭐⭐⭐⭐

Performance Notes

Owners running the high-flow cat variant report clean CEL-free operation after an ECU tune, including on flex fuel setups. The divorced downpipe design enhances turbo spool audibility compared to catless alternatives while maintaining compliance-friendly emissions performance. Installation is straightforward using stock hardware — no cutting or custom fabrication required.

Provider

Kinugawa Turbo Systems

Warranty

Kinugawa Turbo Systems offers a KINUGAWA TROUBLE-FREE WARRANTY for 1 year from the purchase date to the original purchaser. If, for any reason, your turbocharger/s fails or has an issue, you can return it to us for a free overhaul and recondition or replacement depending on availability or the turbo problem. KINUGAWA has you covered no matter the issue.

Exhausts