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

STM Tuned Inc.



We price match!

The STM stainless steel cat-back exhaust for Evo 7/8/9 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: 1-4 Weeks
Hand crafted and welded in New York, please give our fabricators time to assemble your piece! 

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Customer Reviews

Based on 12 reviews
Rust bucket

Very nice. Perfect fit and fast shipping. Thanks STM.

Tim Fritz (Nazareth, PA, US)
Great looking, sounding and fitting!

Wow, wish I'd have replaced my Tomei sooner! This looks so much more mature, the attention to detail where tip angle/placement is concerned is spot on! This exhaust bolted up with zero issues and it sounds amazing! It is surprisingly much more mellow and subdued when you need it to be compared to the Tomei, all with a single small Vibrant muffler. 10/10.

Alex (Quincy, MA, US)
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.

Hugo Brisebois (Shawinigan, QC, CA)
Very nice

Nice quality products and quick delivery.

James S. (San Diego, CA, US)
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!!!

Cancer and Reproductive Harm