Grand Rock Stacks
Diesel Pickup Truck Chrome Smoke Stacks
Universal Installation Kits
**Improve Fuel Mileage **Reduce EGTs **Increase engine longevity
These stacks are High Quality, Commercial Grade Steel, Triple Plated Chrome:
High Quality Commercial Grade Big Rig Stack Chrome!!
For Ford, Chevy & Dodge Diesel Pickup Trucks
Great Low Prices!


5 Styles & Sizes of Stacks: Turn Out, Mitre Cut, Straight Cut, Bull Hauler & New Aussie Style Pickup Truck Stack Pipes. You will love the quality & look of these heavy-duty, Triple-Plated Chrome Grand Rock Stacks!!
Stacks are 36" long, and come about 2" above top of cab. 48" length is available if stacks are purchased separately below. The elbows at the connection add about 10 inches to overall height. The 4" inlet/5" outlet T-Pipe is mounted in the bed, and only one hole needs to be cut in the bed of the truck. All under-bed pipes are 4". All pipes are tough, Commercial Grade aluminized steel. Clamps are Heavy Duty & Zinc coated for durability.
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4" Dual Chrome Stacks with
Complete Installation Kit
starting at $416
Plus UPS GROUND SHIPPING
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5" Dual Chrome Stacks with
Complete Installation Kit
Starting at $475
Plus UPS GROUND SHIPPING
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6" Dual Chrome Stacks with
Complete Installation Kit
Starting at
$615
Plus UPS GROUND SHIPPING
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7" Dual Chrome Stacks with
Complete Installation Kit
Starting at
$765
Plus UPS GROUND SHIPPING
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Made to Order 8" Chrome Stacks with
Complete Installation Kit
Starting at
$885
Plus UPS GROUND SHIPPING
8 inch stacks available in 3 styles: Aussie, Mitre or Straight Cut.
Compatible with 4 or 5 inch under-bed piping
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Dual Stack In-Bed
Heat Shields
Protect your T-Pipe from dents, give it a clean, professional look, keep loose material from collecting around stacks
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Diamond Plate Bed Kit Cover
Bright Aluminum
Starting at $249.65
UPS Ground Shipping $65
Cover kit will fit stack sizes 4"-6",
larger stacks will require modification
Click Here for Dimensions
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180° Wrap Around T-Pipe Heat Shield
48" long, Bright Stainless
From $128.66 + shipping
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Complete Cat Back Installation Kits with Hardware
(Stacks not included)
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4" Dual T-Pipe Kit, EVERYTHING BUT THE STACKS for 4 Inch Stacks
4" T-Pipe with 4" Inlet, 4" Elbows and 4" Flexpipe, clamps and mounting brackets.
Will only fit 4" O.D. stacks.
$266
Plus Ground Shipping
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5" Dual
T-Pipe Kit
EVERYTHING BUT THE STACKS
for 5, 6, 7 & 8 Inch Stacks
Installation Kit only (not including stacks) comes with 4" under-/5" above-bed piping for exhaust sizes up to 4". For smaller exhaust, select size to add reducer and clamp. If you have a 5" exhaust, order the all 5" piping kit see below. These kits accept 5, 6, 7, 8" stacks which have a 5" O.D. base.
Starting at $315
Plus Ground Shipping
If you already have 5" Exhaust, Order Here:
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Single Stack Kits (No Stack-Please Order Separately)
Installs on passenger side
Installation Instructions
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4" Single Chrome Stack Installation Kit (No Stack)
This kit has a 4" thru Bed Inlet Pipe
and will only accept 4" stacks.
4" Single BedKit No Stack *0rder stack below
Kits start at $150
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5, 6, 7 or 8" Single Chrome Stack Installation Kit
(No Stack)
This kit is 4" under bed expanding to 5" above bed piping, will accept our 5, 6, 7 & 8" stacks.
Select kit by size of the stack you will use.
If you have a 5" exhaust order the all 5" piping kit further below.
Kits start at $200
If you have a 5" exhaust select here:
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Stacks and Installation Parts (Sold Separately below)

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Chrome Stacks (no kit)
4, 5, 6, 7 & 8 inch Diameter Stacks
*6", 7"
& 8" stacks have 5" OD base.
*48" & 60" length stacks and all 8" diameter stacks are made to order by the manufacturer, and might require a longer lead time.
*Price is for one stack, if you want 2 stacks, please select quantity "2".
4" Stacks
5" Stacks
6" Stacks
7" Stacks
8" Stacks *All Made-to-Order
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Internal Muffler
Aluminized Steel, Straight Through muffler helps reduce harsh exhaust tones. Sold Individually
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IM-418 For 4" Stack with 4" O.D. base $37.50
IM-518 For 5", 6", 7", & 8" Stack with 5" O.D. base $40.00 each
plus UPS Shipping |
Customer Testimony from R. Schenk :
Thank you for carrying a great product and having helpful customer service reps. The internal muffler helped to lessen the in cab drone on my straight cat deleted 95 dodge cummins that I am able to drive down the rode without getting a head ache. The over-all installation on the product was pretty straight forward. The product was nicely constructed as well so I give this product a 5 out of 5 stars. Thank you so much Black Cloud Diesel.
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STACK CLAMPS (only)
Bright Stainless
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For attaching
Stack(s) to your bedrail using
L-Bracket(s)
(sold separately) |
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L-BRACKETS (only)
Left / Right
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For attaching
Stack(s) to your bedrail
using Clamp(s) sold separately |
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Bright Stainless Stack Clamp & L-Bracket
SETS
for attaching Stack(s) to your bedrail
sold in sets:
Dual Set Pictured
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Single Set
(1 clamp, right bracket)
Dual Set
(2 clamps, right&left bracket)
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Reducer & Clamp Sets

Exhaust Reducer/Clamp

4"ID to 5"ID Chrome Reducer pictured |
Aluminized Exhaust Reducer/Clamp:
3.5"ID to 4"OD $19.98
3.0"ID to 4"OD $19.98
2.5"ID to 4"OD $21.98
$15 shipping
Chrome Reducer
4"ID to 5"ID
4"ID to 5"OD
4"ID to 6"ID
5"ID to 5"ID coupler
5"OD to 6"ID
5"OD to 7"ID
Chrome Reducer with Stainless Clamps
Aluminized also available
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Flexpipe & Flexpipe Clamps
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304 Stainless Steel Commercial Grade Flexpipe with special wide flexpipe clamp set
Select 4 or 5 inch
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Under-the-Bed/Thru Bed Aluminized Elbow
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Commercial Grade Aluminized Steel Custom-sized 4 or 5 inch Elbow with clamp
$55 + $20 shipping
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Repair Pipe
4" Diameter, 48" Length $49.99 or
5" Diameter, 48" Length $59.99
Aluminized Repair Pipe
Expanded on both ends, ready for you to cut to the length you need.
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Chrome or Stainless Steel Rain Caps
Chrome Rain Caps
Available in 4, 5, and 6 inch. 7 and 8 inch rain caps only available in stainless.
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"Shorty" Center Mount Single Stack Kit (stack not included)
For Your Custom, Single Stack Installation -- no "S-Pipe"
You will need to tack weld elbow to underside of the bed for secure installation
Most customers use a single 60" stack (sold separately above) with this Shorty kit
$159.00
$45 UPS Shipping
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Our Stacks are simply the best in Quality and Durability. Made in USA.
Warranty Information: Chrome-plated (except weld area) and aluminized parts used on heavy duty truck exhaust systems are warranted against defective material and workmanship for a period of 1 year from date of shipment. Call if you have questions on proper installation techniques. Grand Rock and Black Cloud Diesel cannot be held liable for damage done as a result of improper installation. If a part is determined to be defective, Grand Rock and Black Cloud Diesel reserve the right to replate only and return the part when the part has been modified, altered, or otherwise damaged. Neglect is not Warranted! Keep the parts clean & waxed!
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