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.

4" Dual Chrome Stacks
with Complete Installation Kit
starting at $416
Plus UPS GROUND SHIPPING

5" Dual Chrome Stacks with
Complete Installation Kit
Starting at $475
Plus UPS GROUND SHIPPING

6" Dual Chrome Stacks with
Complete Installation Kit
Starting at $615
Plus UPS GROUND SHIPPING

7" Dual Chrome Stacks with
Complete Installation Kit
Starting at $765
Plus UPS GROUND SHIPPING

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

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

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

 

180° Wrap Around T-Pipe Heat Shield
48" long, Bright Stainless
From $128.66 + shipping

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

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

Single Stack Kits (No Stack-Please Order Separately)
Installs on passenger side
Installation Instructions

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

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

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

		4" X 36" Stacks Straight Cut/Flat $80 Mitre/Angle Cut $95 Turnout/Curved $110
		4" X 48" Stacks Made-To-Order Straight Cut/Flat $135 Mitre/Angle Cut $140 Turnout/Curved $140
		4" X 60" Stacks Made-To-Order Straight Cut/Flat $135 Mitre/Angle Cut $145 Turnout/Curved $145

5" Stacks

		5" X 36" Stacks Straight Cut/Flat $90 Mitre/Angle Cut $95 Turnout/Curved $95 Aussie Style $100 Bullhauler/Bullhorn $100
		5" X 48" Stacks Made-To-Order Straight Cut/Flat $145 Mitre/Angle Cut $150 Turnout/Curved $150 Aussie Style $155 Bullhauler/Bullhorn $155
		5" X 60" Stacks Made-To-Order Straight Cut/Flat $165 Mitre/Angle Cut $170 Turnout/Curved $175 Aussie Style $180 Bullhauler/Bullhorn $185

6" Stacks

		6" X 36" Stacks Straight Cut/Flat $155 Mitre/Angle Cut $155 Turnout/Curved $155 Aussie Style $180 Bullhauler/Bullhorn $180
		6" X 48" Stacks Made-To-Order Straight Cut/Flat $215 Mitre/Angle Cut $215 Turnout/Curved $220 Aussie Style $225 Bullhauler/Bullhorn $230
		6" X 60" Stacks Made-To-Order Straight Cut/Flat $295 Mitre/Angle Cut $295 Turnout/Curved $300 Aussie Style $305 Bullhauler/Bullhorn $335

7" Stacks

		7" X 36" Stacks Straight Cut/Flat $215 Mitre/Angle Cut $215 Turnout/Curved $235 Aussie Style $250 Bullhauler/Bullhorn $250
		7" X 48" Stacks Made-To-Order Straight Cut/Flat $290 Mitre/Angle Cut $290 Turnout/Curved $315 Aussie Style $325 Bullhauler/Bullhorn $335
		7" X 60" Stacks Made-To-Order Straight Cut/Flat $365 Mitre/Angle Cut $375 Turnout/Curved $390 Aussie Style $405 Bullhauler/Bullhorn $415

8" Stacks *All Made-to-Order

		8" X 36" Stacks Straight Cut/Flat $270 Mitre/Angle Cut $285 Aussie Style $290
		8" X 48" Stacks Straight Cut/Flat $355 Mitre/Angle Cut $365 Aussie Style $375
		8" X 60" Stacks Straight Cut/Flat $380 Mitre/Angle Cut $440 Aussie Style $505

Internal Muffler
Aluminized Steel, Straight Through muffler helps reduce harsh exhaust tones.  Sold Individually

	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

STACK CLAMPS (only)
Bright Stainless

	For attaching Stack(s) to your bedrail using L-Bracket(s) (sold separately)

L-BRACKETS (only)
Left / Right

	For attaching Stack(s) to your bedrail using Clamp(s) sold separately

Bright Stainless Stack Clamp & L-Bracket SETS
for attaching Stack(s) to your bedrail
sold in sets:

Dual Set Pictured	Single Set (1 clamp, right bracket) Dual Set (2 clamps, right&left bracket)

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

Flexpipe & Flexpipe Clamps

	304 Stainless Steel Commercial Grade Flexpipe with special wide flexpipe clamp set Select 4 or 5 inch

Flexpipe & Clamps	:	Select Size 4" Diameter $50 5" Diameter $55

Under-the-Bed/Thru Bed Aluminized Elbow

	Commercial Grade Aluminized Steel Custom-sized 4 or 5 inch Elbow with clamp $55 + $20 shipping

Chrome or Stainless Steel Rain Caps