Loading... Please wait...

- Shop By Car -

Product Finder

Shop By Make

GrimmSpeed Downpipe to Catback 3" Gasket 2X THICK

  • Image 1

Have questions about fitment or applications? Contact Us

Product Description


100% Thicker than OEM Gaskets!!

Our new 2X Thick 3" 2-Bolt gasket is hands down the most beefy 3" 2-Bolt gasket on the market. 12 LAYERS!

Tired of the endless searching for a 3" 2 Bolt premium gasket that doesn't blow out? Most aftermarket Subaru exhaust systems need a 3" 2 bolt gasket, however, a quality 3" 2 bolt style gasket is nearly impossible to find. Until now. GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price.

At GrimmSpeed™ we have worked with endless amounts of aftermarket gaskets, none seem to work as well as the multi-layer steel oem style gaskets. The issue with the oem gaskets from Subaru is that they are so expensive. Well Grimmspeed™ has your answer, a premium multi-layer steel w/ stainless steel fire-ring gasket at a great price.

  • 100% Thicker than OEM Gaskets
  • 304 Stainless Steel Fire-Ring

ALL 3" Subaru/EVO aftermarket exhaust systems

GrimmSpeed™  3 inch 2 Bolt Double Thick Exhaust Gasket


Product Reviews

Write your own product review

Product Reviews

  1. Very good gasket

    Posted by Joseph Meredith

    Twice as thick as normal. Very solid. I would recommend

  2. 3" gasket

    Posted by Unknown

    I kept blowing out my exhaust gaskets at higher boost and with all the back pressure from back fires on my WRX. I installed a 3" heavy duty gasket a couple months ago and it's still holding strong. Just wish I bought another to go between the down pipe and cat back!!

  3. Amazing quality piece!

    Posted by Ryan

    As usual, anytime I need a gasket I turn to the folks at grimmspeed. The option to get a double thick or regular thickness gasket has always impressed me. This time was no different. The double thick gasket helped to seal up a slightly leaky exhaust gap between a downpipe and a catback made by two different companies. Worked perfect as usual and has nearly completed my collection of grimmspeed gaskets abundant on my STi swapped forester.

    Thanks for the great quality! Ill undoubtedly be back for more.

  4. Based on Customer Service Alone

    Posted by David B

    The GrimmSpeed customer service I received was top-notch! And while the gasket I received will not fit what I bought it for (2012 Mazdaspeed3), I will take the $30 hit just because I think that the service was worth it alone and I learned that this universal gasket will not work with my car. I really do hope that GS looks into supporting the Mazdaspeed3 platform more in the future.

  5. Great product

    Posted by Jason

    No leaks exactly as described.

  6. 03 WRX

    Posted by Unknown

    I recently bought and installed Grimmspeeds extra thick catback exhaust gasket, no leaks, well made. Also bought and installed a Grimmspeed electronic boost controller for an open source tune at Outback Automotive, Auburn, Wash.
    Upon reading the dyno sheet after the tune I noticed that a considerable percent of the power gain was a direct result of the Grimmspeed boost controller, the remainder was down pipe and laptop to ecu parameters paring the boost controller with the system of my 03 WRX. I also noticed that the tuner, who is well known for his Subaru work, uses Grimmspeed boost controllers exclusively in this application.

    Robert, Advanced Arbor Care
    Monroe , Wash

  7. Leak fixed

    Posted by Wanarex

    I had a nasty exhaust leak from my downpipe to cat-back that would not seal with gasket sealer. After a week of driving with the annoying leak I remembered that grimmspeed sold a 7-layer gasket with fire ring for a replacement. I installed it today and it worked, no leak. It was amazing how much it cleaned up the sound of my car. It's back to being aggressive.