★★★★★ 5
Good quality
Item Package Quantity: 1
Works great, would by it again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
Gibson 15-19 GMC Sierra 2500 HD Base 6.0L 3.5in/3in Cat-Back Dual Extreme Exhaust - Stainless
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Gibson 15-19 GMC Sierra 2500 HD Base 6.0L 3.5in/3in Cat-Back Dual Extreme Exhaust - StainlessSKU: 65652 UPC: 677418024234 Gibson 15 19 GMC Sierra 2500 HD Base 6. 0L 3. 5in 3in Cat Back Dual Extreme Exhaust Stainless This dual bolt on cat back exhaust system installs behind the rear tires at an aggressive angle for a powerful tone and bold street presence. Designed for 2011 2019 Chevrolet Silverado 2500 HD 3500 HD and GMC Sierra 2500 HD 3500 HD models with 6. 0L V8 it delivers dyno tested gains of 15 20 horsepower. Crafted from T 409 stainless
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Your Gibson 15-19 GMC Sierra 2500 HD Base 6.0L 3.5in/3in Cat-Back Dual Extreme Exhaust - Stainless orders ship within 1-2 business days.
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- Fast: 2-3 business days
- Express: 1-2 business days
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4.9 ★★★★★
Based on 1617 reviews
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Product Reviews
★★★★★ 2
Don't waste your money.
Item Package Quantity: 1
Did not work!
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Reviewed in the United States on May 7, 2026
★★★★★ 1
Doesn't work
Item Package Quantity: 1
No effect at all on my headlights. Don't waste your money.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Well worth the money. And easy to use.
Item Package Quantity: 1
For what it cost, it worked way better than I expected. 👍
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Reviewed in the United States on April 16, 2026
★★★★★ 5
The best!
Size: Gravity, Color: Black
Probably the best, most functional, most adaptable (to different cars, going on #3), longest lasting car mount I've tried. Getting another one for my 16 year old who is about to start drinking.
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Reviewed in the United States on April 20, 2026
