Grand Rock Stacks & Kits
**Reduce EGTs
**Increase Longevity
**Improve Fuel Mileage
Highest Quality
Commercial Grade Triple Plated
Chrome Stacks!
For Ford Chevy & Dodge Pickups
7" Aussies Now Available!!
SUMMER SIZZLER !
6" COMPLETE STACK KITS STARTING AT $629!! Increase Performance, Lower EGTs with Triple Plated Chrome Stacks
Click Here -- Dual Stack Kits
Click Here -- Single Stack Kits
Click Here -- T-Pipe Kits Only
Click Here -- Stacks Only
Click Here -- Internal Mufflers
Click Here -- Heat Shields
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aussie, straight, mitre, turnout, bullhauler
Please note: if for any reason you believe that installing a set of our stacks on your truck will
void your warranty, we suggest that you contact your local dealer and ask them what their position would be. Our experience
is that if you don't remove your catalytic converter and have some sort of muffler in line most dealerships will honor
your request to install stacks.
Please allow 2-3 weeks for delivery.
If your under-bed exhaust pipes
are already 5", click here to see our stack kits for your truck!
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7 inch Mitre Cut Stacks in picture above!
5 Styles & Sizes of Stacks:
Turn Out, Mitre Cut, Straight Cut,
Bull Hauler & New Aussie Style
Pickup Truck Pipes!
You will love the quality & looks of these heavy-duty, Triple Plated Chrome
GRAND ROCK STACKS!
Aussies Available in 5", 6" & NEW 7"
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.
These diesel pickup stack kits adapt to
all Non-DPF truck models.
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INCREASE PERFORMANCE EVEN MORE while you Eliminate in-cab drone with an
Aeroturbine Muffler Exhaust Guide Combo
Click here for description and cost
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Dual Stacks with T Pipe Kits and All Hardware
Install Instructions
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4" Complete Stack Kit with 4" T-pipe regularly $441.00
SUMMER SIZZLER SALE,
STARTING AT $387!!
UPS Ground Shipping $70
BullHauler & Aussie Stacks not available in 4"
Select adapter that is the O.D. size of your existing exhaust system. Adapter and clamp will add to total price! |
5" Complete Dual Stack Kits
regularly starting at $515
SUMMER SIZZLER SALE,
STARTING AT $449!!
UPS Ground Shipping $75
Select adapter that is the O.D. size of your existing exhaust system. Adapter and clamp will add to total price! |
6" Complete Dual Stack Kits
regularly starting at $714.00
SUMMER SIZZLER SALE,
STARTING AT $629!!
UPS Ground Shipping $80
Select adapter that is the O.D. size of your existing exhaust system. Adapter and clamp will add to total price!
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7" Complete Dual Stack Kits
regularly starting at $899.10
SUMMER SIZZLER SALE,
STARTING AT $797!!
UPS Ground Shipping $90.00
Select adapter that is the O.D. size of your existing exhaust system. Adapter and clamp will add to total price!
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Dual Stack In-Bed Heat Shields
Protect your T-Pipe installation from dents, give it a clean and professional look, keep loose material from collecting around stacks |
Diamond Plate Bed Kit Cover
Bright Aluminum
.... starting at $318.85
UPS Ground Shipping $65
Cover kit will fit stack sizes to 6",
7" stacks will require modification
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180° T-Pipe Heat Shield
48" Bright Stainless
From $128.66
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T Pipe Kits and all Hardware
( Stacks not included ) |
4" Dual T-Pipe Kit, EVERYTHING BUT THE STACKS
4" T-Pipe with 4" Inlet, 4"Elbows and 4"FlexPipe, clamps and mounting brackets.
Will only fit 4" O.D. stacks.
$247, plus UPS Ground $40.00
| 5" Dual T-Pipe Kit, EVERYTHING BUT THE STACKS
SUMMER SIZZLER SALE,
STARTING AT $295!!
5" T-Pipe with 4" Inlet, 5" Elbow, 4" Elbow, 4" FlexPipe, clamps and mounting brackets.
Accepts our 5", 6" and 7" Stacks. Our 6"& 7" stacks neck down to a 5" O.D.
For 5" Stacks: $295
For 6" Stacks: $311
For 7" Stacks: $329
plus UPS Ground Shipping
$55.00
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Single Stack Kits- - Installs on passenger side
Install Instructions |
4" Single Stack Kit
This kit has a 4" thru Bed Inlet Pipe and will only accept 4" stacks.
BullHauler & Aussie Stack not available in 4"
BedKit - no stack* $142 plus shipping
*Stack styles and adapters increase the base price
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5", 6" and 7" Single Stack Kits
This kit has a 4" thru Bed Inlet Pipe and
will accept our 5", 6" and 7" stacks.
BedKit - no stack* From $219 plus shipping
* Stack styles, sizes and adapters increase the base price
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STACKS ONLY
Internal Mufflers |
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Sold Separately
4, 5, 6 and 7 inch Stacks
36" and 48" Lengths
*price is per stack and will vary with its
size, length and style
6" & 7" stacks neck down to 5" OD
plus $30 shipping included in price
BullHaulers Not Available in 4"
Aussies Available in 5, 6" & NEW 7"
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Sold Separately
For 4" Stacks-- $37.50 each
For 5", 6" and 7" Stacks--$40 each
plus $8 Shipping per muffler
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Eliminate annoying (70-75 mph) muffler drone with our Exhaust Guide
Click here for description and cost |
| Our Stacks are simply the best in Quality and Durability . Made in USA.
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