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STM Downpipe / O2 Recirculated for OEM-Style Housing - Evo 7/8/9

STM Tuned Inc.


Vehicle Fitment:
2001-2006 Mitsubishi Lancer Evolution VII VIII IX
• Fits with OEM or factory-style turbo hotside

The STM O2 Housing Downpipe combo is the perfect bolt-on addition to your exhaust! The all-in-one stainless steel design will eliminate extra hardware and flow smoothly straight through from the turbo utilizing the tapered CNC flange. All gaskets and necessary hardware are included for a clean install.

• Hand Fabricated
• Tig-Welded
• Back-Purged
• 3" Stainless Steel
• CNC Flanges
• Gaskets and Hardware Included

Made in the USA!
Lifetime Warranty on STM Parts to the original purchaser against manufacturing defects.

(1) STM Stainless Downpipe
(1) STM Divided Turbo Outlet Gasket (STM-EVO-SSG-DTO)
(1) 3" 2-Bolt Remflex Gasket
(2) M10 x 35 Bolts
(2) M10 Nuts
(2) M10 Flat Washers

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Customer Reviews

Based on 1 review
STM O2/Downpipe Recirculated for OEM-Style Housing

This is a no question buy. Why have a o2/downpipe when STM make this amazing combo less bolts and gasket's!! Cant wait till i pair it with a FP cast Mani and a Blouch Evo IV-IX Dominator 1.0XT Turbo (Journal Bearing) going for a 500whp sunday monster.

Anyway this a top quality system with Amazing and Perfect welds!
Proud to support a American company!

Thanks for the great feedback, Dylan! Make sure to send us over some pics when its all installed : )

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