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STM O2 Housing Downpipe with Atmosphere Dump - Evo X

STM Tuned Inc.


Vehicle Fitment:
2008-2015 Mitsubishi Lancer Evolution X 

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.

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

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

(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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