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STM Evo 7/8/9 Stainless Steel Cat-Back Exhaust

STM Tuned Inc.



The STM Stainless Steel Cat-Back Exhaust for Evolution VIII-IX bolts directly to your factory cat or test pipe and even saves 14 pounds! Features full 3" mandrel-bent piping and tig-welded flanges with an Ultra-Quiet muffler for the perfect mix of street-ability and performance. All new mounting hardware is included along with three Remflex graphite gaskets for a leak-free install. We offer two different rear section designs to perfectly match your JDM or USDM rear bumper for a flawless look and fit!

Vehicle Fitment:
2001-2006 Mitsubishi Lancer Evolution VII VIII IX
For JDM Evo 7, Please select USDM rear bumper for proper fitment.

Specs & Weights:
• Weighs 21.5 Pounds (Including Hardware)
• Factory Cat-Back Weighs 35.8 Pounds
• Save 14.3 Pounds!
• Hand Fabricated
• Tig-Welded
• Back-Purged
• Full Stainless Steel
• 3" with 2-Bolt Exhaust Flanges
• CNC Flanges
• O2 Bung
• Gaskets and Hardware Included
• Bolts to Factory Cat or 3" 2-Bolt Test Pipe

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

(1) STM Three Piece Exhaust
(3) 3" 2-Bolt Remflex Gaskets
(6) M10 x 35 Bolts
(6) M10 Nuts
(6) M10 Flat Washers

Shipping Times: 4-6 Weeks
Hand crafted and welded in New York, please give our fabricators time to assemble your piece! 

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© All content is property of STM Tuned Inc
We price match!
If you find it cheaper, just give us a call!
(585) 226-8226

© All content is property of STM Tuned Inc

We price match!
If you find it cheaper, just give us a call!
(585) 226-8226

Customer Reviews

Based on 10 reviews
Sounds good

Compared to my old exhaust it was much quieter even with GSC 3 Cams. I also added a vibrant resonator on, which is perfect for daily driving.

Very nice

Nice quality products and quick delivery.

STM standard

Craftsmanship is outstanding, fitment a little of a challenge (this replaced the Cobb TBE, and fitment was terrible w/Cobb). But the issue is with the Hangers location intended for the oem exhaust (replaced oem hangers with Torque brand) and we were able to line it up perfectly and centered perfectly through the bumper exit cut out. But more importantly is the awesome sound!! louder than the Cobb, (Cobb muffler is huge in comparison and has a resonator, STM none) raspier tone, angry!! like the 4g63 motor was intended to sound!! Matched up with my STM 6062 turbo kit w/dump, Freaking awesome!!!!
Thx STM!!!

Perfect fitment

Install was super smooth and looks great! Perfect size not too big or small for the jdm rear . Sounds good with great quality!

Awesome Exhaust

Bolted right up and noticed a huge difference in the car. It has a nice deep tone and is perfect for a daily. but when you get into it roars! Love it thanks stm!

Cancer and Reproductive Harm