Part Number: PLM-SUB-DP-0814-CAT

Description: Catted Downpipe

Fitment: 15-21 Subaru STI 2.5T

Details:

The PLM Power Driven Divorced Downpipe for 2008–2014 Subaru WRX and 2008–2020 STI is engineered to deliver impressive performance gains by improving exhaust flow and turbo response. Featuring a full 3-inch mandrel-bent stainless steel construction, a high-flow 200-cell metallic catalytic converter, and thick .38-inch CNC-machined flanges, this downpipe offers excellent durability and fitment. Its TIG-welded one-piece design ensures strength and reliability, while the extra O₂ bung provides flexibility for aftermarket sensors. Designed for direct bolt-on installation using stock hardware, it’s the ideal upgrade for enthusiasts seeking power and efficiency.

• Features

  • Comes standard with 200 cell, high flow, metallic cat

  • Includes both gaskets & hardware

  • Made of stainless steel

  • One year warranty

  • Mandrel bend 3.0" piping

  • Direct bolt-on & utilizes stock ball joints and clamps

  • CNC machined flanges

  • Flange is .38" thick

  • One piece design

  • Handmade & TIG welded

  • Additional O2 bung for wideband usage

  • Divorced downpipe for optimal flow

  • If stock cat-backs are used, we recommend our exhaust adapter flange

  • ECU tune is recommended for best results and proper operation

• Handmade & TIG welded

• Additional O2 bung for wideband usage

• Divorced downpipe for optimal flow

• If stock cat-backs are used, we recommend our exhaust adapter flange

• ECU tune is recommended for best results and proper operation