Skip to content
FREE SHIPPING* On Orders Over $199 within 48 States
Shop in Confidence with Our Price Protection Program!
Clear Car Save Vehicle
Skip to product information
1 of 4

Tomioka Racing

TR Twin Scroll High Flow Catless Downpipe | TR-ES1005

Fits: 02-07 WRX, 04-07 STI

Ships When Available-Lead Time Applies ⓘ

Auto Parts Store of the Year 2026

Tomioka Racing TR Twin Scroll High Flow Catless Downpipe | TR-ES1005
Fits: 02-07 WRX, 04-07 STI

Estimated Shipping Widget will be displayed here!

Profile Avatar

Talk to an Enthusiast

Verify Fitment & Product Recommendations

M-F 8:30AM - 5:00PM


Fitment

  • 2004-2007 Subaru | WRX STI
  • 2002–2007 Subaru | WRX

Description

Tomioka Racing Subaru Twin Scroll Down Pipe for WRX/STI is a high quality downpipe at an affordable price. The Twin Scroll Downpipe features larger diameter piping with ported flanges for a quicker and faster exhaust air flow compared to the standard OEM downpipe. Each downpipe is constructed of SUS304 grade stainless steel that gives it shine and durability that will last for years to come. Installation is a snap! The downpipe will fit like your OEM downpipe and comes with all the necessary hardware and gasket. If you're looking for the best bang for your buck downpipe look no further!

Dyno Graph courtesy of Emelia Hartford

Graph includes the following modifications to "Poop-Turd".

  • Stock JDM EJ205 w/ AVCS
  • OEM Twin Scroll Headers, Uppipe and Turbo
  • 1000CC Deatschwerks Injectors and DW300 Fuel Pump
  • Tomioka Racing Twin Scroll Catless Downpipe 
  • Borla Cat Back Exhaust
  • Haltech Platinum Pro tuned by Bill from Delicious Tuning
  • Running Flex Fuel E85. Was full E85 for these passes. 

 


Characteristics

Material Stainless Steel SUS304
Pipe Thickness 0.25 Inch / 6.3mm
Flange Thickness 0.5 Inch / 12.5mm

Kit Contents:
• Twin scroll Downpipe x 1
• Down pipe to Exhaust Gasket x1
• Down pipe to Exhaust Nuts & Bolts x2

*Off Road Use Only. This is a USDM Length downpipe. This downpipe will only fit on 2002 - 2007 Subaru WRX/ 2004-2007 Subaru STi with existing twin-scroll turbo and Twin scroll exhaust manifold set-up.*

Shipping and Delivery

Review our Shipping Policy for delivery details, shipping costs and exclusions.

Warranty and Support

Limited Manufacturer Warranty

Return and Refund

Eligibility, exclusions, applicable fees and exceptions are detailed in our Return Policy. Restrictions apply to special-order and custom products.

Proposition 65

Proposition 65 Warnings: cancer and reproductive harm www.p65warnings.ca.gov