4'' EXHAUST PIPES
All of our 4 inch exhaust is manufactured right here in the USA. We sell only the best aftermarket truck components available to the market.

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4" Aluminized Stacks
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4" Chrome Stacks
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4" Aluminized Elbows
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4" Chrome Elbows
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4" Flex Exhaust Hose
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4" EXHAUST CLAMPS
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4" Y-PIPES
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EBPB11861 or M66-7091-0320 4" Kenworth EGR Bellows Replacement
Grand Rock
OEM PRICE $576.78YOUR PRICE $350.19M6670910320 M74-1020-002 EBPB11861 or M66-7091-0320 4" Kenworth EGR Bellows Replacement M66-7091-0320 What other exhaust parts will I need for my Kenworth Truck? You could need several parts to complete the overall system. If you are trying to...GRCKW-6541-0320OEM PRICE $576.78YOUR PRICE $350.19 -
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EBPB11863 Bellows 4" X 14.25" Peterbilt Bellow Pipe M66-6541-0405
Grand Rock
OEM PRICE $810.76YOUR PRICE $429.66PB-6541-0405 M66-6541-0405 4" X 14.25" Peterbilt Flared Bellow Flex Pipe EBPB11863 320 - 2008 & UP 335 - 2008 & UP 378 - 2007 379 – 127" BBC 2007 379 – 119" BBC 2007 386 - 2007-2014 387 - 2007-2010 388 - 2008-2014 389 - 2008...GRCPB-6541-0405OEM PRICE $810.76YOUR PRICE $429.66 -
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M66-6541-0320 Flared Bellow Flex Pipe EBPB11861 for T800
Grand Rock
OEM PRICE $446.00YOUR PRICE $279.00EBPB11861 or M66-6541-0320 4" X 11 3/8" Peterbilt Flared Bellow Flex Pipe DPF Flex Connector for Kenworth and Peterbilt Models 2008 & Newer.4” Flange x 4” Flange x 11 3/8” CompressedReplaces OEM...KW-PB-6541-0320OEM PRICE $446.00YOUR PRICE $279.00 -
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4" Elbow 90 Degree 18" x 29" OD-OD Aluminized L490-1829SA
Grand Rock
OEM PRICE $132.89YOUR PRICE $95.80L490-1829SA 4" Elbow 90 Degree 18" x 29" OD-OD Aluminized L490-1829SA What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...GRCL490-1829SAOEM PRICE $132.89YOUR PRICE $95.80 -
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4" x 25 feet .018" Galvanized Exhaust Flex Hose G18-4300
Grand Rock
OEM PRICE $579.89YOUR PRICE $507.79G18-4300 4 inch x 25 feet .018 inch Galvanized Flex (G18-4300) G18-4300 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what...GRCG18-4300OEM PRICE $579.89YOUR PRICE $507.79 -
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4" x 60" .018 Galvanized Exhaust Flex Hose G18-460
Grand Rock
OEM PRICE $159.00YOUR PRICE $119.00G18-460 4" X 60" .018 Galvanized Flex G18-460 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your truck;It...GRCG18-460OEM PRICE $159.00YOUR PRICE $119.00 -
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4" Flat Bolt Exhaust Clamp 304 Stainless Steel FB-4SS
Grand Rock
OEM PRICE $107.12YOUR PRICE $79.31FB-4SS 4" Flat Bolt Clamp Stainless Steel FB-4SS What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your...GRCFB-4SSOEM PRICE $107.12YOUR PRICE $79.31 -
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4" Marmon Flange 4.62" Bead in 304 Stainless Steel 41967-L
Grand Rock
OEM PRICE $104.03YOUR PRICE $61.7941967-L 4" Marmon Flange 4.62" Bead in 304 Stainless Steel 41967-L What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...GRC41967-LOEM PRICE $104.03YOUR PRICE $61.79 -
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4" Marmon Exhaust 4.625" Flare 304 Stainless Steel 39660-L
United Muffler
OEM PRICE $132.00YOUR PRICE $72.0039660-L 4" Marmon Exhaust 4.625" Flare 304 Stainless Steel 39660-L What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...UTDMAR4FLOEM PRICE $132.00YOUR PRICE $72.00 -
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4" Type C Y-Pipe Aluminized Exhaust Pipe 9.46" x 12" YC-400A
Grand Rock
OEM PRICE $317.23YOUR PRICE $224.53YC-400A 4" Type C Y-Pipe Aluminized Exhaust Pipe 9.46" x 12" YC-400A What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...GRCYC-400AOEM PRICE $317.23YOUR PRICE $224.53 -
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4" Type B Y-Pipe Aluminized Exhaust Pipe 10.5" x 16" YB-400A
Grand Rock
OEM PRICE $316.20YOUR PRICE $213.21YB-400A 4" Type B Y-Pipe Aluminized Exhaust Pipe 10.5" x 16" YB-400A What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...GRCYB-400AOEM PRICE $316.20YOUR PRICE $213.21 -
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4" Y-Pipe Aluminized Exhaust Pipe with No Plate 12" x 8" Y-401NPA
Grand Rock
OEM PRICE $387.01YOUR PRICE $273.71Y-401NPA 4 inch Y-Pipe Aluminized No Plate Exhaust Y-401NPA 12" x 8" H What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...GRCY-401NPAOEM PRICE $387.01YOUR PRICE $273.71 -
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4" Y-Pipe Aluminized With Plate Exhaust Pipe 12" x 26" Y-400A
Grand Rock
OEM PRICE $377.01YOUR PRICE $284.31Y-400A 4 inch Y-Pipe Aluminized With Plate Exhaust Y-400A What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCY-400AOEM PRICE $377.01YOUR PRICE $284.31 -
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4' x 24" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-424
Grand Rock
OEM PRICE $167.89YOUR PRICE $136.99WFF-424 4' x 24" Westfalia 304 Stainless Triple-S Flex WFF-424 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCWFF-424OEM PRICE $167.89YOUR PRICE $136.99 -
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4" x 18" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-418
Grand Rock
OEM PRICE $150.37YOUR PRICE $129.77WFF-418 4" x 18" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-418 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCWFF-418OEM PRICE $150.37YOUR PRICE $129.77 -
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4" x 15" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-415
Grand Rock
OEM PRICE $125.65YOUR PRICE $115.35WFF-415 4" x 15" Westfalia 304 Stainless Triple-S Flex WFF-415 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCWFF-415OEM PRICE $125.65YOUR PRICE $115.35 -
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4" x 12" Westfalia 304 Stainless Steel Triple-S Exhaust Flex WFF-412
Grand Rock
OEM PRICE $128.75YOUR PRICE $118.45WFF-412 4" x 12" Westfalia 304 Stainless Triple-S Flex WFF-412 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCWFF-412OEM PRICE $128.75YOUR PRICE $118.45 -
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4" Westfalia Aluminized Exhaust Band Clamp WFC-4A
Grand Rock
OEM PRICE $41.20YOUR PRICE $24.71WFC-4A 4" Westfalia Aluminized Band Clamp WFC-4A What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your...GRCWFC-4AOEM PRICE $41.20YOUR PRICE $24.71 -
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4" Westfalia Stainless Steel Exhaust Band Clamp WFC-4SS
Grand Rock
OEM PRICE $52.55YOUR PRICE $27.81WFC-4SS 4" Westfalia Stainless Steel Band Clamp WFC-4SS What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits...GRCWFC-4SSOEM PRICE $52.55YOUR PRICE $27.81 -
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21428534 Volvo & Mack VNL-VNM-Pinnacle Bellows 17.5" Long VG-8534
Grand Rock
OEM PRICE $773.52YOUR PRICE $639.63VG-8534 21428534 Volvo & Mack EGR Bellows Flex 17.5" Long VG-8534 OEM OEM NUMBER Volvo 21959393 Volvo 22307701 Mack 4ME-22047M Volvo 21428534 Volvo 21959393 Volvo 21219442 Volvo 21005136 Volvo 22307701 Roadchoice...GRCVG-8534OEM PRICE $773.52YOUR PRICE $639.63 -
4" Tilt Bell Aluminized Heat Diverter Box Connector TBE-4
Grand Rock
OEM PRICE $107.10YOUR PRICE $86.51TBE-4 4" Tilt Bell Aluminized Exhaust TBE-4 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe fits your truck;It...GRCTBE-4OEM PRICE $107.10YOUR PRICE $86.51 -
4" Tilt Ball Aluminized Heat Diverter Box Connector TBA-4
Grand Rock
OEM PRICE $115.36YOUR PRICE $94.76TBA-4 4" Tilt Ball Aluminized Heat Diverter Box Connector TBA-4 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCTBA-4OEM PRICE $115.36YOUR PRICE $94.76 -
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4" x 48" 304 Stainless Steel Flex Exhaust Hose SF-448
Grand Rock
OEM PRICE $209.08YOUR PRICE $157.58SF-448 4" x 48" 304 Stainless Steel Flex Exhaust Hose SF-448 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCSF-448OEM PRICE $209.08YOUR PRICE $157.58 -
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4" x 36" 304 Stainless Steel Flex Exhaust Hose SF-436
Grand Rock
OEM PRICE $157.59YOUR PRICE $126.69SF-436 4" x 36" 304 Stainless Steel Flex Exhaust Hose SF-436 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCSF-436OEM PRICE $157.59YOUR PRICE $126.69 -
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4" x 300" 304 Stainless Steel Flex Exhaust Hose SF-4300
Grand Rock
OEM PRICE $1,052.67YOUR PRICE $795.17SF-4300 4" x 300" 304 Stainless Steel Flex Exhaust Hose SF-4300 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCSF-4300OEM PRICE $1,052.67YOUR PRICE $795.17 -
4" x 24" 304 Stainless Steel Flex Exhaust Hose SF-424
Grand Rock
OEM PRICE $135.97YOUR PRICE $94.77SF-424 4" x 24" 304 Stainless Steel Flex Exhaust Hose SF-424 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCSF-424OEM PRICE $135.97YOUR PRICE $94.77 -
4" x 18" 304 Stainless Steel Flex Exhaust Hose SF-418
Grand Rock
OEM PRICE $115.36YOUR PRICE $84.46SF-418 4" x 18" 304 Stainless Steel Flex Exhaust Hose SF-418 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCSF-418OEM PRICE $115.36YOUR PRICE $84.46 -
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4" x 120" 304 Stainless Steel Flex Exhaust Hose SF-4120
Grand Rock
OEM PRICE $525.31YOUR PRICE $401.71SF-4120 4" x 120" .018 304 Stainless Steel Flex Exhaust Hose SF-4120 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM...GRCSF-4120OEM PRICE $525.31YOUR PRICE $401.71 -
4" x 12" 304 Stainless Steel Flex Exhaust Hose SF-412
Grand Rock
OEM PRICE $104.03YOUR PRICE $73.13SF-412 4" x 12" 304 Stainless Steel Flex Exhaust Hose SF-412 What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out what OEM pipe...GRCSF-412OEM PRICE $104.03YOUR PRICE $73.13 -
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4" x 72" Straight Cut Chrome Exhaust Stack ID End S4-72EXC
Grand Rock
OEM PRICE $481.96YOUR PRICE $376.96S4-72EXC 4 inch x 72 inch Straight Cut Chrome Exhaust Stack ID End S4-72EXC What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCS4-72EXCOEM PRICE $481.96YOUR PRICE $376.96 -
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4" x 60" Straight Cut Aluminized Exhaust Stack OD Ends S4-60SBA
Grand Rock
OEM PRICE $192.63YOUR PRICE $120.52S4-60SBA 4 inch x 60 inch Straight Cut Aluminized Exhaust Stack OD Ends S4-60SBA What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find...GRCS4-60SBAOEM PRICE $192.63YOUR PRICE $120.52 -
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4" x 60" Straight Cut Chrome Exhaust Stack ID End S4-60EXC
Grand Rock
OEM PRICE $353.85YOUR PRICE $280.35S4-60EXC 4 inch x 60 inch Straight Cut Chrome Exhaust Stack ID End S4-60EXC What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCS4-60EXCOEM PRICE $353.85YOUR PRICE $280.35 -
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4" x 60" Straight Cut Aluminized Exhaust Stack ID End S4-60EXA
Grand Rock
OEM PRICE $164.80YOUR PRICE $113.30S4-60EXA 4 inch x 60 inch Straight Cut Aluminized Exhaust Stack ID End S4-60EXA What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find...GRCS4-60EXAOEM PRICE $164.80YOUR PRICE $113.30 -
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4" x 48" Straight Cut Chrome Exhaust Tube OD Ends S4-48SBC
Grand Rock
OEM PRICE $309.76YOUR PRICE $225.76S4-48SBC 4 inch x 48 inch Straight Cut Chrome Exhaust Tube OD Ends S4-48SBC What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCS4-48SBCOEM PRICE $309.76YOUR PRICE $225.76 -
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4" x 48" Straight Cut Aluminized Exhaust Stack OD Ends S4-48SBA
Grand Rock
OEM PRICE $142.14YOUR PRICE $111.24S4-48SBA 4 inch x 48 inch Straight Cut Aluminized Exhaust Stack OD Ends S4-48SBA What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find...GRCS4-48SBAOEM PRICE $142.14YOUR PRICE $111.24 -
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4" x 48" Straight Cut Chrome Exhaust Stack ID End S4-48EXC
Grand Rock
OEM PRICE $310.81YOUR PRICE $247.81S4-48EXC 4 inch x 48 inch Straight Cut Chrome Exhaust Stack ID End S4-48EXC What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCS4-48EXCOEM PRICE $310.81YOUR PRICE $247.81 -
4" x 48" Straight Cut Aluminized Exhaust Stack ID End S4-48EXA
Grand Rock
OEM PRICE $123.60YOUR PRICE $92.70S4-48EXA 4 inch x 48 inch Straight Cut Aluminized Exhaust Stack ID End S4-48EXA What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find...GRCS4-48EXAOEM PRICE $123.60YOUR PRICE $92.70 -
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4" x 36" Straight Cut Chrome Exhaust Tube OD Ends S4-36SBC
Grand Rock
OEM PRICE $261.44YOUR PRICE $198.44S4-36SBC 4 inch x 36 inch Straight Cut Chrome Exhaust Tube OD Ends S4-36SBC What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCS4-36SBCOEM PRICE $261.44YOUR PRICE $198.44 -
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4" x 36" Straight Cut Chrome Exhaust Stack ID End S4-36EXC
Grand Rock
OEM PRICE $235.19YOUR PRICE $172.20S4-36EXC 4 inch x 36 inch Straight Cut Chrome Exhaust Stack ID End S4-36EXC What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find out...GRCS4-36EXCOEM PRICE $235.19YOUR PRICE $172.20 -
4" x 36" Straight Cut Aluminized Exhaust Stack ID End S4-36EXA
Grand Rock
OEM PRICE $114.33YOUR PRICE $83.43S4-36EXA 4 inch x 36 inch Straight Cut Aluminized Exhaust Stack ID End S4-36EXA What other exhaust parts will I need? Depending on your current exhaust system;you could need several truck pipes to complete the job. If you are needing to find...GRCS4-36EXAOEM PRICE $114.33YOUR PRICE $83.43