STM Evo X Stainless Cat-Back Single Exit Exhaust

STM Tuned Inc.



We price match!

The STM Evo X Stainless Steel Catback Single Exit Exhaust weighs in at only 18.2 pounds and will bolt up to your stock or aftermarket 3" cat or testpipe. The STM Exhaust utilizes your existing exhaust hangers and includes all gaskets and hardware for a clean and easy installation.

Vehicle Fitment:
2008-2015 Mitsubishi Lancer Evolution X

Features & Specs:
• Weighs Only 18.2 Pounds with Hardware & Gaskets
• Factory Cat-Back Weighs 43.35 Pounds
• Save 25.15 pounds!
• Hand Fabricated
• Tig-Welded
• Back-Purged
• Full 3" Stainless Steel
• 3" 2-Bolt Flanges
• CNC Flanges
• Gaskets and Hardware Included
• Utilizes Factory Exhaust Hangers
• Bolts to Stock or Aftermarket Test Pipe / Cat
• Deep Rumble
• Perfect Fitment

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

(1) STM Stainless 2-Piece Exhaust
(2) 3" Remflex Gaskets
(4) M10 x 35 Bolts
(4) M10 Flat Washers
(4) M10 Nuts

Install Notes:
The straight portion of the pipe is just slightly angled and can only be installed properly one way. Just check over the flanges first and match up the markings

Shipping Times: 1-14 Days
Hand crafted and welded in New York, please give our fabricators time to assemble your piece!

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Customer Reviews

Based on 11 reviews
Christopher Cruz (Reno, NV, US)
STM Single for the win

I’ve have several different exhaust setups on my X and this blew all of them out of the water! I’ve ran DSMC Sports Single exit, custom single exit with magma flow muffler, straight piped, and I recently switched from the Cobb quad tip catback to the STM Stainless Single exit and I’m glad it did! Very little to no drone which suprised me considering there’s no muffler only the vibrant ultra quiet resonator right before the exit. Sounds very nice with a great deep tone and very crisp when in boost nothing ricey at all. I’ve done 5+hr road trips without the Wife being angry so I appreciate that! Shipping was very fast and the quality of craftsmanship and fit and finish were spot on. I’m looking forward to swapping out my ams downpipe for the stm O2 dump in the future as it looks like a quality piece as well.

wilfredo echevarria (Bismarck, ND, US)

STM Evo X Stainless Cat-Back Exhaust

Juan Serrano (Irving, TX, US)
STM catback

Great sounding exhaust and great fitment

Benjamin Beaird (Columbus, GA, US)
Best Evo exhaust hands down IMO

The build quality is impeccable. It's honestly the ONLY exhaust that I wanted on my evo X. Back when I had my Evo 8, you guys were just starting to make these exhausts in aluminum.

Anthony Maldonado (Philadelphia, PA, US)
Sounds Awesome

Probably best sounding exhaust ever, wasn't a big fan of the smaller tip initially but after seeing fitment first hand, i was turned around and really impressed. You can clearly hear turbo spool now through the exhaust. Wish I bought this system from the start.

Cancer and Reproductive Harm