Grand Rock

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Grand Rock 3.11" Machined Turbo Flare for 5.9L Cummins Style-B AD-311MF

MSRP: $183.00

$136.99

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Grand Rock 5" x 51" Aluminized Muffler Exhaust Eliminator ID-ID S5-51EXEXA

MSRP: $232.00

$166.85

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Grand Rock QPM-561AERO-2 for Dual Mufflers AeroCab Kenworth Muffler Kit

MSRP: $5,074.00

$2,651.22

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Grand Rock Kenworth Aero Quiet Perfomance Muffler 5" x 61" QPM-561

MSRP: $2,021.00

$1,165.96

5" x 6" Exhaust Coupler ID-ID Aluminized CP-56A

Grand Rock 5" Exhaust Coupler ID-ID Aluminized Steel CP-56A

MSRP: $78.00

$44.28

Grand Rock VB-300C Emissions V-Band Turbo Clamp Breeze VT10318C02 VB-300C

MSRP: $44.15

$36.39

Grand Rock 21021852 Volvo Turbo Clamp with Breeze VT10481T - VB-481V

MSRP: $80.00

$51.51

21021850 Volvo Turbo Clamp with Breeze VT10769 - VB-591V

Grand Rock 21021850 Volvo Turbo Clamp 5.91" VT10769/VB-591V

MSRP: $93.00

$54.59

Grand Rock 5" 90 Degree Exhaust Elbow 13.5" x 13.5" ID-OD Aluminized L590-1313A-8

MSRP: $117.00

$87.55

S5-12EXA 5" x 12" Straight Cut Aluminized Exhaust Stack ID End

Grand Rock 5" x 12" Straight Cut Aluminized Exhaust Stack ID End S5-12EXA

MSRP: $99.00

$71.06

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Grand Rock 8" ID to 5" OD Exhaust Reducer Aluminized Pipe R8I-5OA

MSRP: $244.00

$210.13

4" 304 Stainless Steel Flex-Seal Exhaust Clamp FL-4SS

Grand Rock 4" Stainless Steel Flex-Seal Exhaust Clamp FL-4SS

MSRP: $41.50

$32.44

2083 products total

OUR MISSION STATEMENTTo our valued customers, At Grand Rock, we promote and work hard every day to provide our customers with the highest possible solutions, while maintaining good business values. We value our people, encourage their development and reward their performance. Our improved environmental outcomes can ride the coattails of our lean culture change; this is a win for our business, our customers, and a win for environmental improvement.We have the widest selection of exhaust products and for over 40 years our quality, dedication, customer service and efficiency have been put to a test, and after all those years we can proudly say that we are ready to take another step with our customers towards a promising future.Thank you, Grand Rock Team