Grand Rock

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Grand Rock 5" Westfalia Aluminized Exhaust Band Clamp WFC-5A

MSRP: $41.20

$22.65

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Grand Rock 4" x 12" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-412

MSRP: $128.75

$118.45

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Grand Rock 4" x 15" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-415

MSRP: $125.65

$115.35

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Grand Rock 4" x 18" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-418

MSRP: $150.37

$129.77

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Grand Rock 4' x 24" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-424

MSRP: $167.89

$136.99

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Grand Rock 04-19105-012 Westfalia 304 Stainless Steel Flex 5" x 12" WFF-512

MSRP: $167.90

$116.40

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Grand Rock 04-19105-015 Westfalia 304 Stainless Steel Flex 5" x 15" WFF-515

MSRP: $198.80

$136.99

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Grand Rock 04-19105-018 Westfalia 304 Stainless Steel Flex 5" x 18" WFF-518

MSRP: $209.10

$147.30

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Grand Rock 04-19105-021 Westfalia 304 Stainless Steel Flex 5" x 21" WFF-521

MSRP: $243.09

$160.69

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Grand Rock 04-19105-024 Westfalia 304 Stainless Steel Flex 5" x 24" WFF-524

MSRP: $275.02

$172.02

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Grand Rock 23527-3438 Western Star Heritage Y-Pipe Exhaust

MSRP: $602.55

$396.55

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Grand Rock 23527-3440 Western Star 85 Degree Chrome Exhaust Elbow

MSRP: $574.73

$399.63

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Grand Rock 23529-3444 Western Star Heritage Air-Ride Y-Pipe Exhaust

MSRP: $636.54

$430.54

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GRAND ROCK - WESTERN STAR CONSTELLATION REPLACEMENT TURBO PIPE (23529-3478)

Grand Rock 23529-3478 Western Star Constellation Turbo Pipe for C15 CAT

MSRP: $356.39

$253.39

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Grand Rock 23517-3520 Western Star Heritage Model Turbo Exhaust Pipe

MSRP: $418.19

$263.69

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Grand Rock 23517-3525 Western Star 32 Degree Aluminized Exhaust Elbow

MSRP: $304.87

$212.17

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Grand Rock 23529-3540 Western Star Chrome 90 Degree Elbow WS-3540C

MSRP: $464.52

$351.22

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Grand Rock 23529-3542 Western Star Constellation Y-Pipe Exhaust

MSRP: $631.39

$487.19

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Western Star 35 Degree Elbow OD-OD Ends 23529-3545

Grand Rock 23529-3545 Western Star 35 Degree Aluminized Elbow OD-OD

MSRP: $413.02

$310.02

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Grand Rock 23529-3561 Western Star 5" with 20 degree bend

MSRP: $415.08

$291.48

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23527-3440 Western Star Exhaust 6" Reduced to 5"

Grand Rock 23527-3440 Western Star 85 Degree Chrome 6" Reduced to 5"

MSRP: $508.81

$395.51

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23529-3540C Western Star 6" 90 Elbow Reduced to 5" WS6-3540C

Grand Rock 235293540C Western Star 6" 90 Elbow Reduced to 5" ID WS6-3540C

MSRP: $548.98

$445.98

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Grand Rock 3" Y-Pipe Exhaust Aluminized No Plate 12" x 10" Y-300NPA

MSRP: $320.49

$217.49

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Grand Rock 3.5" Y-Pipe Exhaust Aluminized No Plate 14" x 10" Y-350NPA

MSRP: $320.79

$228.09

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Y-400A 4" Y-Pipe Aluminized With Plate Exhaust Pipe 12" x 26"

Grand Rock 4" Y-Pipe Aluminized With Plate Exhaust Pipe 12" x 26" Y-400A

MSRP: $377.01

$284.31

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Grand Rock 4" Y-Pipe Aluminized Exhaust Pipe with No Plate 12" x 8" Y-401NPA

MSRP: $387.01

$273.71

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Grand Rock 5" Y-Pipe Aluminized Exhaust No Plate 25'' x 14'' Y-500NPA

MSRP: $443.94

$340.94

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Grand Rock 5" Y-Pipe Aluminized Exhaust No Plate 16'' x 11'' Y-501NPA

MSRP: $368.73

$317.23

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Grand Rock 4" Type B Y-Pipe Aluminized Exhaust Pipe 10.5" x 16" YB-400A

MSRP: $316.20

$213.21

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Grand Rock 5" Type B Y-Pipe Aluminized Exhaust Pipe 10.5" x 16" YB-500A

MSRP: $316.20

$244.10

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Grand Rock 4" Type C Y-Pipe Aluminized Exhaust Pipe 9.46" x 12" YC-400A

MSRP: $317.23

$224.53

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Grand Rock 5" Type C Y-Pipe Aluminized Exhaust Pipe 10.84" x 13" YC-500A

MSRP: $327.54

$245.14

Grand Rock 4.75" Turbo Flare Lip for T35 Turbo;L10;3176 Style E

MSRP: $153.49

$81.38

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Grand Rock M66-1007 or 14-13822 Peterbilt Exhaust 5" OD Turbo PB-13822

MSRP: $642.72

$436.72

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Grand Rock F1HZ-5246U Ford L;LNT;LTS Turbo Exhaust 5" Elbow

MSRP: $1,176.27

$962.03

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Grand Rock 2.5" Marmon Exhaust 2.98" Flare 304 Stainless Steel 39659-L

MSRP: $178.21

$147.30

4" Marmon Flange 4.62" Bead in 304 Stainless Steel 41967-L CAT 9N-6325

Grand Rock 4" Marmon Flange 4.62" Bead in 304 Stainless Steel 41967-L

MSRP: $104.03

$61.79

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Grand Rock 5" Marmon Flange 5.756 Bead 304 Stainless Steel 41968-L

MSRP: $136.99

$82.39

Grand Rock 3" Stainless Steel AccuSeal Exhaust Band Clamp AS-3SS

MSRP: $41.20

$27.81

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Grand Rock 5" ID Chrome Dump Truck Stack Pipe Exhaust A-10.5 B-16 C-24

MSRP: $525.31

$453.21

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Grand Rock 11" Universal Muffler 3.5" OD End In and Out Muffler ARG-03536-11OD

MSRP: $440.00

$349.00

Grand Rock 4" Flat Bolt Exhaust Clamp 304 Stainless Steel FB-4SS

MSRP: $107.12

$79.31

FB-5SS 5" Flat Bolt Exhaust Clamp 304 Stainless Steel FB-5SS - SPECIAL ORDER

Grand Rock 5" Flat Bolt Exhaust Clamp 304 Stainless Steel FB-5SS - SPECIAL ORDER

MSRP: $92.67

$74.14

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Grand Rock 04-15654-000 Freightliner Exhaust Pipe 5" x 66" FL-15654-0

MSRP: $359.48

$256.48

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Grand Rock 04-17129-009 Freightliner Century or Columbia Y-Pipe FL-17129-009

MSRP: $605.64

$492.34

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Grand Rock 4" x 60" .018 Galvanized Exhaust Flex Hose G18-460

MSRP: $159.00

$119.00

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Grand Rock 6" X 120" .015 Galvanized Exhaust Flex Hose G15-6120

MSRP: $410.98

$318.28

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Grand Rock 4" x 25 feet .018" Galvanized Exhaust Flex Hose G18-4300

MSRP: $579.89

$507.79

2082 products total

We proudly carry products from Grand Rock, because we know they've been providing high-quality exhaust system components for nearly 50 years. The manufacturer uses over a dozen different machines and the latest software to ensure that their customers get high-quality exhaust solutions.Grand Rock makes over 95% of its products in-house. So when it's time to upgrade, maintain, or replace your exhaust system, you can do it confident that you're getting American quality and supporting American workers.Grand Rock Exhaust ProductsWhether you own one rig or manage a fleet, you know that exhaust problems can result in significant downtime and lost hauling opportunities. High-quality Grand Rock components keep your rig performing optimally and within DOT regulations.MufflersA well-built muffler keeps your rig compliant with federal pollution standards and federal, state, and local noise emission regulations. It improves engine performance by minimizing backpressure and reducing the risk of overheating due to improper airflow. A quality muffler can even save you on fuel and preserve horsepower.We offer Grand Rock mufflers in various sizes and configurations to match your rig. You can also choose a custom muffler and outlet patch.Exhaust TubesHigh-grade pipes provide airflow, emissions compliance, and optimal engine performance, and prevent dangerous gases from entering the cab. Select Grand Rock Y-pipes, S-pipes, curved top, or other tubes for Kenworth, International, Freightliner, and other semi manufacturers, or find a specific part to fit your custom industrial or fabrication needs.ClampsYour exhaust tubes need quality-made clamps to keep them firmly in place. Unsecured tubes, especially large-diameter ones, can lead to costly damage. We offer Grand Rock clamps for horizontal and vertical applications in sizes ranging from 2.5 to 8" and in a variety of finished materials.ElbowsHorizontal and vertical exhaust systems demand high-quality elbows. If you're experiencing a loss in fuel economy or engine power, or hear hissing or rumbling noises, a damaged elbow may be the culprit. In custom tube applications, elbows give you the flexibility to go around beams, walls, or other obstacles. We offer hundreds of high-quality Grand Rock elbows in various sizes, so it's easy to find the proper fit.EGR Flex BellowsYour exhaust gas recirculation, or EGR, flex bellows take on vibration, parts movement, and thermal expansion. You can't replace them with just any flex hoses, or you risk leaks in high-temperature areas that face significant stress.Opt for Grand Rock flex bellows in various sizes, constructed from multiple layers of stainless steel to prevent leaks and withstand harsh conditions. They get the job done right, transporting your exhaust from the manifold to the EGR valve or through your cooler for recirculation.Shop Truck Pipes USA for Quality and Top-Rate ServiceThe Grand Rock exhaust parts and other products we sell adhere to IATF 16949:2016 quality standards, so you can shop with confidence. If you need help finding what you're looking for or have questions, our customer service and sales teams are U.S.-based, knowledgeable, and always ready to help.Don't let faulty mufflers or other exhaust components reduce your uptime and hurt your business. Shop our wide selection of over 2,000 industry-respected Grand Rock products to keep your exhaust system operating smoothly.