# STM's New WRX/STi Aluminum Catback Exhaust!

**URL:** <https://forums.speedlife.net/t/stms-new-wrx-sti-aluminum-catback-exhaust/228318>\
**Category:** Vendor Marketplace\
**Created:** [January 21, 2013, 11:26am UTC](https://forums.speedlife.net/t/stms-new-wrx-sti-aluminum-catback-exhaust/228318 "2013-01-21T11:26:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Justin\_at\_STM](https://avatars.discourse-cdn.com/v4/letter/j/8491ac/32.png) [@Justin\_at\_STM](https://forums.speedlife.net/u/Justin_at_STM)\
**Post date:** [January 21, 2013, 11:26am UTC](https://forums.speedlife.net/t/stms-new-wrx-sti-aluminum-catback-exhaust/228318/1 "2013-01-21T11:26:40Z")

</div>

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust.jpg)

The STM Aluminum Cat-Back Exhaust for 2002-2007 Subaru WRX & STi is insanely lightweight at only 9 pounds!! The entire exhaust is fully 3" aluminum, tig welded in house utilizing the STM Aluminum Flanges and Vibrant Aluminum Race Muffler. All gaskets and hardware are included as well.

Bolts to any aftermarket downpipe that replaces the second, lower cat such as Invidia or Megan. Drop 22 pounds off the weight of your car!! STM has been running aluminum exhaust systems for years on the streets and at the track. With daily driven cars and 1/4 mile passes in the high 8’s at 165+, we have tried and tested the performance results.

- Weighs only 9.25 pounds!
- Stock cat-back weighs in at 31.5 pounds
- Tig Welded Aluminum
- Made in the USA

$700  
Call us or PM to purchase or for more info.

-STM

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust2.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust2.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust3.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust3.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust4.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust4.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust5.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust5.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust6.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust6.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust7.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust7.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust8.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust8.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust9.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust9.jpg)

![http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust10.jpg](http://www.streettunedmotorsports.com/parts/b/stm_subaru_wrx_sti_aluminum_cat_back_exhaust10.jpg)  
For off-road use only!