STM Evo X O2 Housing Downpipe with Atmosphere Dump

STM Evo X O2 Housing Downpipe with Atmosphere Dump 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.

*Permanently Discontinued*
As of September 2023, this product is no longer available, but we do offer the STM Evo X Recirculated O2 Housing Downpipe

Part Numbers:
STM-EVOX-02DP-AD, STM-EVOX-O2DP-AD

Vehicle Fitment:
2008-2015 Mitsubishi Lancer Evolution X

Power Gains:
With a simple downpipe swap, our Mustang Dyno results yielded +19 HP and +14 TQ!

Features & Specs:
• Dump to Atmosphere
• Hand Fabricated
• Tig-Welded
• Back-Purged
• Full Stainless Steel
• 3" 2-Bolt Exhaust Flange
• CNC Flanges
• O2 Bung
• Gaskets and Hardware Included
• Bolts to Factory Cat or Stock-Placement Race Pipe

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

Includes:
(1) STM Downpipe
(1) STM Stainless O2 Housing to Downpipe Gasket
(1) 3" 2-Bolt Remflex Gasket
(2) M10 x 35 Bolts
(3) M10 Flat Washers
(3) M10 Nuts
(1) M10 x 40
(1) M10 Lock Washers

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