The STM full 3" stainless steel cat-back exhaust for 2G AWD DSM is made in-house at STM from 3" mandrel-bent tube and tig-welded flanges with an Ultra-Quiet resonator for the perfect mix of sound and performance. Fits AWD models only and fits both 2GA and 2GB rear bumpers. 

The cat-back exhaust utilizes all factory hangers and weighs in at only 19.7 pounds with hardware. The flange to the cat is 3" to fit any aftermarket stock-location 3" HFC or test pipe. Does not fit the factory cat. Pictured installed Cory's 1999 GSX.

Vehicle Fitment:
2G DSM AWD
1995-1999 Eclipse GSX
1995-1998 Talon TSi
• Fits ALL WHEEL DRIVE models only
• Does not fit the stock cat
• Bolts to any test pipe in the stock location using a 3" flange
• Fits STM 2G High Flow Cat

Features & Specs:
• Weighs 19.7 pounds
• Factory cat-back weighs 37 pounds
• Save 17.3 pounds!
• Tig Welded Stainless Steel (Back Purged)
• 3" Piping
• 3" 2-Bolt Flanges
• 3.5" Exhaust Tip

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

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

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

Notes:
STM-2GDSM-EX-SS-25 has been discontinued as of October 29 2025. We no longer offer the 2.5" option to fit the stock cat.

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