Grand Rock

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Grand Rock M-824 Type 1 Powerflow Muffler 8" Round x 15" Body 4" IN-OUT 21.5 Overall

MSRP: $338.00

$208.00

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Grand Rock M-878 Type 1 Muffler for Freightliner 11" Round x 36" 3" IN 4" OUT

MSRP: $709.00

$359.00

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Grand Rock M-922 Type 3A Kenworth Aerocab High Performance Muffler

MSRP: $714.00

$514.00

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Grand Rock M-922-6 Type 3A Muffler 9" x 22" 6" INLET 6" OUTLET

MSRP: $714.00

$514.00

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Grand Rock 5" Kenworth Stack Mount Bracket Polished Stainless Steel MB-5KWS

MSRP: $207.00

$157.00

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Grand Rock 5" Peterbilt Stack Mounting Bracket Polished SS MB-5PBS

MSRP: $149.00

$126.00

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Grand Rock 6" Kenworth Stack Mount Bracket Polished Stainless Steel MB-6KWS

MSRP: $207.00

$155.00

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Grand Rock 6" Peterbilt Stack Mounting Bracket Polished SS MB-6PBS

MSRP: $190.00

$150.00

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6" Western Star Constellation Stack Mount Bracket Clamp MB-6WSS

Grand Rock 6" Western Star Constellation Stack Mount Bracket MB-6WSS

MSRP: $197.00

$151.00

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Grand Rock 7" Kenworth Stack Mount Bracket Polished Stainless Steel MB-7KWS

MSRP: $212.00

$160.00

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Grand Rock 7" Peterbilt Stack Mounting Bracket Polished SS MB-7PBS

MSRP: $182.00

$159.00

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Grand Rock 7" Western Star Constellation Stack Mount Bracket MB-7WSS

MSRP: $208.00

$172.00

2084 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