• Most orders over 200 automatically qualify for Free shipping Most orders over $200 automatically qualify for Free shipping.
  • Add a picture of your truck to our facebook and you could get your truck in Diesel Power Magazine! No purchace necessary. Add a picture of your truck to our facebook and you could get your truck in Diesel Power Magazine! No purchace necessary.
  • Post your favorite Diesel Parts to our facebook for a chance to win a $250 Gift Card! No purchace necessary. Post your favorite Diesel Parts to our facebook for a chance to win a $250 Gift Card! No purchace necessary.
  • Free Next Day Shipping on ALL Tuners!!!
																<h1><span xmlns="https://www.w3.org/1999/xhtml">YOUR #1 SOURCE FOR #2 POWER!!</span></h1>
																<span xmlns="https://www.w3.org/1999/xhtml">                            </span> Whenever you purchase a tuner from Diesel Power Products, we send it our via next day air. There is nothing else for you to do. Give us a call if you have any questions. Free Next Day Shipping on ALL Tuners!!!

    YOUR #1 SOURCE FOR #2 POWER!!

  • Add a picture of your truck to our facebook and you could get your truck in Diesel Power Magazine! No purchace necessary. Add a picture of your truck to our facebook and you could get your truck in Diesel Power Magazine! No purchace necessary.
  • We offer Paypal, Elayaway,Google Checkout, Visa, MasterCard, American Express, Discover, Cash, Check by mail and Google Checkout as payment methods. We offer Paypal, Elayaway,Google Checkout, Visa, MasterCard, American Express, Discover, Cash, Check by mail and Google Checkout as payment methods.
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    Want to add serious aggressive looks AND sound to your diesel?  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, but we can accommodate for smaller exhaust with reducer pipes.  We even have full four inch turbo to stack kits available.  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.  Diesel Power Products is also able to acquire these stack kits BEFORE chroming, in case you want to apply your own coating.  We even have the ability to have your stacks TEFLON coated prior to being shipped, for a truly unique finish. 
      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.  




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Grand Rock 5
Grand Rock 5" Hood Stack 20" long Kits
DPP Price: $160.56 
SKU: GR-HSK-5
Grand Rock 6
Grand Rock 6" Hood Stack 20" long Kits
DPP Price: $172.53 
SKU: GR-HSK-6
Grand Rock 7
Grand Rock 7" Hood Stack 20" long Kits
DPP Price: $172.53 
SKU: GR-HSK-7
Grand Rock Dual 4
Grand Rock Dual 4" Stack Bed Kit
DPP Price: $265.00 
SKU: GR-DPU-4SK
Grand Rock Dual 5
Grand Rock Dual 5" Stack Bed Kit
DPP Price: $315.00 
SKU: GR-
Grand Rock Dual 6
Grand Rock Dual 6" Stack Bed Kit
DPP Price: $335.00 
SKU: GR-
Grand Rock Dual 7
Grand Rock Dual 7" Stack Bed Kit
DPP Price: $355.00 
SKU: GR-
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 01-07 6.6L GM Duramax
DPP Price: $499.00 
SKU: GR-0107GMDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 03-04 5.9L Dodge Cummins
DPP Price: $499.00 
SKU: GR-0304DODGEDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 03-07 6.0L Ford Powerstroke
DPP Price: $499.00 
SKU: GR-0307FORDDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 04.5-07 5.9L Dodge Cummins
DPP Price: $499.00 
SKU: GR-04507DODGEDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 07.5-09 6.6L LMM GM Duramax
DPP Price: $499.00 
SKU: GR-07509GMDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
DPP Price: $499.00 
SKU: GR-07509DODGEDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 08-09 6.4L Ford Powerstroke
DPP Price: $499.00 
SKU: GR-0809FORDDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 2010 6.7L Dodge Cummins
DPP Price: $499.00 
SKU: GR-2010DODGEDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 89-93 5.9L Dodge Cummins
DPP Price: $499.00 
SKU: GR-8993DODGEDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 94-02 5.9L Dodge Cummins
DPP Price: $499.00 
SKU: GR-9402DODGEDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 94-97 7.3L Ford Powerstroke
DPP Price: $499.00 
SKU: GR-9497FORDDUAL
Grand Rock Dual Stack Kit 07.5-09 6.7L Dodge Cummins
Grand Rock Dual Stack Kit 99-03 7.3L Ford Powerstroke
DPP Price: $499.00 
SKU: GR-9903FORDDUAL
Grand Rock Exhaust Reducer
Grand Rock Exhaust Reducer
DPP Price: $12.00 
SKU: GR-
 
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