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Grand Rock

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Grand Rock Chrome Exhaust Stack Tip 2218 15.00 Grand Rock Chrome Exhaust Stack Tip
5 5 8
$ 85.15
Vertical Exhaust Stacks Chrome Finish 4"-7" Diameters Aussie, Angle Cut, Bull Horn, Straight Cut, and Curved Top Options 36" Vertical Length A 36" stack will get to the top of the cab. A longer 48" is available call for pricing Stack tips are sold individually, Dual systems require a purchase quantity of two. Note: All stack tips listed above will reduce to O.D. on bottom to fit a Grand Rock Y-Pipe/Stack Base. If you are not using Grand Rock in-bed stack components please use the measurements provided to confirm fitment.
Grand Rock Hood Stack Mounting Kit 17739 10.00 Grand Rock Hood Stack Mounting Kit
$ 126.62
The Grand Rock Hood Stack Mounting Kit is perfect for those building a race truck or sled pulling truck. Includes the needed components to mount the stack on your hood to give you the aggressive look you want on your competition vehicle, while keeping your EGT's low. Features: Upward Facing "Out Of The Hood" Exhaust Stack Perfect For Competition and Race Vehicles Includes Mount For Hood Stack (Stack Sold Separately) Mount only, turbo to stack plumbing must be supplied. Fitment Note: This kit is designed to be used with Grand Rock Hood Stack Tips which are reduced to OD on the bottom. If you are using another brand of stack tip please confirm it will fit on the Hood Stack Mount designed to accept an OD stack.
Grand Rock Hood Stack Tips 17743 10.00 Grand Rock Hood Stack Tips
$ 33.66
Grand Rock Hood Stack Tips for use with Hood Stack Kit. Vertical Exhaust Hood Stacks Chrome and Raw Finish Available 5"-7" Diameters Straight Cut or Angle Cut 20" Length Reduced to OD On Bottom Fitment Note: The Stack tips above reduce to an OD on the bottom and are specifically designed for use with the Grand Rock Hood Stack Kit (sold separately). If you are using your own plumbing, please confirm that it will accept the Grand Rock Stack Tip. Stack tip only. See below for Hood Stack Kit.
Grand Rock Powerflow "Big Rig" Dual Stack Kit 2216 70.00 Grand Rock Powerflow "Big Rig" Dual Stack Kit
4.5 5 8
$ 351.25
Powerflow "Big Rig" Aluminized Stack Kit Easy-to-install kit gives your pick-up that "BIG RIG" look! Great flow - improved performance. Functional - Routes exhaust fumes above and away from livestock, car haulers, and cargo where diesel smoke is unwanted. Select many different exhaust stack styles and lengths to use with this system (stacks not included with kits) Part Number Diameter of Stack Hardware Base Diameter X2 Inlet Diameter DPU-4SK 4" 4" 4" DPU-5SK 5" 5" 4" DPU-6SK 6" 5" 4" DPU-7SK 7" 5" 4" DPU-5SK-5I 5" 5" 5" DPU-6SK-5I 6" 5" 5" DPU-7SK-5I 7" 5" 5" NOTE: On ALL Stack Kits that are 6" or 7", order SK, SP or SBH stacks. These are reduced to 5" OD at the bottom. Kit includes 2 bright stainless unistrap clamps to secure stacks Quality AccuSeal heavy gauge band clamps included in kits Everything included except chrome stacks. Down pipes, Mufflers and Intermediate pipe not included with these kits. Fitment Note: The Grand Rock Stack Plumbing is designed specifically for Grand Rock stack tips and has a 5 ID inlet (where stack attaches). If you are not using Grand Rock stack tips, please use the measurements provided to confirm your stack tip will fit the Grand Rock plumbing.
Grand Rock Powerflow "Big Rig" Single Stack Kit 2217 60.00 Grand Rock Powerflow "Big Rig" Single Stack Kit
$ 192.05
Powerflow "Big Rig" Aluminized Stack Kit Easy-to-install kit gives your pick-up that "BIG RIG" look! Great flow - improved performance. Functional - Routes exhaust fumes above and away from livestock, car haulers, and cargo where diesel smoke is unwanted. Select many different exhaust stack styles and lengths to use with this system (stack not included with kits) Part Number Diameter of Stack Inlet Diameter SPU-4SK 4" 4" SPU-5SK 5" 4" SPU-6SK 6" 4" SPU-7SK 7" 4" SPU-5SK-5I 5" 5" SPU-6SK-5I 6" 6" SPU-7SK-5I 7" 5" NOTE: On ALL Stack Kits that are 6" or 7", order SK, SP or SBH stacks. These are reduced to 5" OD at the bottom. Kit includes bright stainless unistrap clamp to secure stacks Quality AccuSeal heavy gauge band clamps included in kits Everything included except chrome stack. Down pipes, Mufflers and Intermediate pipe not included with these kits. Fitment Note: The Grand Rock Stack Plumbing is designed specifically for Grand Rock stack tips and has a 5 ID inlet (where stack attaches). If you are not using Grand Rock stack tips, please use the measurements provided to confirm your stack tip will fit the Grand Rock plumbing.
Grand Rock Rubber Hump Hose HH-X90 16267 1.00 Grand Rock Rubber Hump Hose HH-X90
$ 16.55
Replace your damaged, torn, or failed hump hose in your intake system with the Grand Rock Rubber Hump Hose. Each hose features a durable rubber construction and is available in multiple sizes for popular applications. Features:Rubber Hump HoseFor Aftermarket and Custom InstallationsDimensions:HH-4 - 4" Inlet, 5.25" LengthHH-5 - 5" Inlet, 6" Length HH-6 - 6" Inlet, 7" Length
Grand Rock V-Band Clamp VB-384F 16261 1.00 Grand Rock V-Band Clamp VB-384F
$ 24.92
Grand Rock V-Band Clamp for turbo to downpipe connection. Replaces Ford OE#: F6TA-5A281-BA
Grand Rock V-Band Clamp VB-429F6 16263 1.00 Grand Rock V-Band Clamp VB-429F6
$ 18.2
Grand Rock V-Band Clamp for turbo to downpipe connection Replaces Ford OE#: 6C34-5A281-AA
Grand Rock V-Band Clamp VB-429F7 16264 1.00 Grand Rock V-Band Clamp VB-429F7
$ 21.72
Grand Rock V-Band Clamp for turbo to downpipe connection. Replaces Ford OE#: 4C24-5A281-HA
Grand Rock V-Band Clamp VB-450 16266 1.00 Grand Rock V-Band Clamp VB-450
$ 21.49
Grand Rock V-Band Clamp for turbo to downpipe connection. Replaces Cummins OE#: A49-3535399
Grand Rock V-Band Clamp VB-532 16265 1.00 Grand Rock V-Band Clamp VB-532
$ 23.82
Grand Rock V-Band Clamp for turbo to downpipe connection. Replaces Cummins OE#: 52121285AA
Grand Rock VB-384G V-Band Clamp (Downpipe To Front-Pipe) 16262 1.00 Grand Rock VB-384G V-Band Clamp (Downpipe To Front-Pipe)
$ 18.46
The Grand Rock V-Band Clamp VB-384G is a replacement for the factory clamp your 2001-2007 GM 6.6L Duramax. This clamp joins the bottom of your downpipe, to the front-pipe in your exhaust system. The factory clamp is exposed to extreme conditions from constant heat cycles, and being exposed to the elements that can often lead to damage or corrosion. This high-quality replacement costs much less than a new clamp at the dealer, and will save you a lot of time and hassle when installing a new exhaust system, or downpipe. Features: High-Quality Replacement Joins Bottom Of Turbo Downpipe To Exhaust Front Pipe Replaces GM OE#: 15671559
XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • Effective 3/16 we have shifted Customer Service hours to 8:30 – 7:00pm EST. To ensure compliance with New Jersey’s recent curfew.
  • Effective 3/18 we have decided to temporarily close both of our retail stores in NJ and NV.
  • Our technical sales team remains available Mon-Fri 8:30am-9pm and Saturday 10:30am-7pm EST.
  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.