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Catalog Overview
Universal Parts
Clamps and Brackets
Mufflers and Converters
Air Intake
Emission Solutions
Flex Hose
OEM Heavy Duty Systems
OEM Medium Duty Systems
School Bus Systems
Tools & Accessories
Pickup Kits

Bestsellers
1.  5"2-BEND Y-PIPE ALZ
2.  7" PETERBILT RETRO KIT
3.  6" PETERBILT RETRO KIT
4.  DODGE 03/04 4" EXHAUST KIT
5.  04-06 DODGE 5.9L 600 SERIES 4" ALZ EXHAUST KIT
6.  04-06 DODGE 5.9L 600 SERIES 5" ALZ EXHAUST KIT
7.  5" DIESEL PICK UP DUAL STACK KIT
8.  6" DIESEL PICK UP DUAL STACK KIT
9.  FORD 99-02 7.3L 4" ALZ KIT
10.  FORD 99-02 7.3L 5" ALZ KIT

Pickup Kits


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Product
QtyPriceTotal
DPU-5SK - 5" DIESEL PICK UP DUAL STACK KIT 
Available
 
PRK-7 - 7" PETERBILT RETRO KIT 
Available
 
DPU-6SK - 6" DIESEL PICK UP DUAL STACK KIT 
Available
 
PRKY-13944 - 5"2-BEND Y-PIPE ALZ 
Available
 
PRK-6 - 6" PETERBILT RETRO KIT 
Available
 
DPU-4SK - DIESEL PICKUP 4" DUAL STACK KIT 
Available
 
DPU-7SK - 7" DIESEL PICK UP DUAL STACK KIT 
This is a Custom part. Please contact Grand Rock Customer Service for pricing and availability.
 
HSK-6 - 6" HOOD STACK KIT 
Available
 
DPU-5SK-5I - 5" STACK KIT W/5" INLET 
Available
 
HSK-7 - 7" HOOD STACK KIT 
Available
 

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