Want to add serious
aggressive looks AND sound to your 2007.5+ 6.6L LMM GM Duramax?
We have just the answer to turn heads and separate your truck from the
crowd! Grand Rock introduces their PowerFlow Chrome Stack Kits,
designed specifically for our pickup trucks. We offer several styles,
including Straight Cut, Curved, Mitre Cut, Bullhorn, and the NEW Aussie
Style!!! Most stack kits are available in 4, 5, 6, and even 7 inch
diameter!
Grand Rock kits are designed for an existing four or five inch exhaust
under the truck. On the LMM Duramax, if you have not modified any of
the factory exhaust, you have a four inch underbed hookup. If you are
planning on upgrading to a more "off-highway" type of exhaust system,
in which you would be removing the DPF filter and all related emissions
equipment, we even have full four inch turbo to stack kits available.
Turbo to stack kits are sold as "full-flow" kits in which there are no
traditional style mufflers included. However, Grand Rock stacks do
ship with a sleeve style muffler that inserts into each stack. When
ordering a four inch stack kit, a four inch in-bed “T” pipe kit is
included. When ordering a five, six, or seven inch stack kit, a five
inch in-bed kit is included. Stack kits are available in our more
popular dual stack kits, but single stack passenger side exit kits are
also available.
Grand Rock prides itself in making the finest exhaust stacks in the
industry, and double nickel chrome all stacks. Each one of the kits
you will find on our website feature 36” stacks, which will bring the
tips several inches above the cab on most full size trucks. But for
those of you who want something different, CALL US!!! We are able to
obtain Grand Rock stacks in many different lengths, for those who want
to push the extreme, or are doing something even a bit more custom.
Note:
All pricing includes 36” chrome-plated stacks with complete
installation kit. Call for pricing and ordering on different lengths
and finishes, or for individual stack pieces and/or parts.