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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
Fits 1980-86 GMC K1500 Suburban Straight Through Muffler-Stainless SM11585-JHPRStreet Max, Stainless Straight Through Performance Muffler, 4. 0" x 9. 0" x 22. 0" Oval Body, Mild Tone, 16 Gauge 409 Grade Stainless Steel, Satin Finish, 3. 0" Center In, 2. 25" Dual Out, Reversible, 3 Year Limited Warranty. Features: Straight Through Design (fully reversible) Improved Horsepower and Torque 409 Grade 16 Gauge Stainless Steel Construction High Heat Thermal Mesh Effective Drone Reduction Mild Tone Specs: Body Length (IN) 22 Body Type
Street Max, Stainless Straight-Through Performance Muffler, 4.0" x 9.0" x 22.0" Oval Body, Mild Tone, 16-Gauge 409-Grade Stainless Steel, Satin Finish, 3.0" Center In, 2.25" Dual Out, Reversible, 3 Year Limited Warranty.
Features:
- Straight-Through Design (fully reversible)
- Improved Horsepower and Torque
- 409-Grade 16-Gauge Stainless Steel Construction
- High-Heat Thermal Mesh
- Effective Drone Reduction
- Mild Tone
Specs:
| Body Length (IN) | 22 |
|---|---|
| Body Type | Oval |
| Finish | High-Heat Thermal Mesh |
| Inlet Configuration | Center |
| Inlet Diameter (IN) | 3 |
| Material | 409-Grade 16-Gauge Stainless Steel |
| Outlet Configuration | Dual |
| Outlet Diameter (IN) | 2.25 |
| Overall Length (IN) | 28 |
| Prop 65 - Short Label | prop65_warning.jpg |
| Prop 65 (C, R or CR) | CR |
| Prop 65 Yes/No | Yes |
| Series | 4 inx9 in Oval |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-1986 | GMC | K1500 Suburban | |
| 1980-1993 | GMC | K2500 | |
| 1988-1999 | GMC | C1500 | |
| 1988-1999 | GMC | K1500 | |
| 1999 | GMC | C1500 Suburban | |
| 2001-2010 | GMC | Savana 3500 | |
| 2001-2004 | GMC | Sierra 2500 HD | |
| 2001-2004 | GMC | Sierra 2500 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 466 reviews
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Product Reviews
★★★★★ 5
Great product
Size: 36 sqft
Easy to apply, made a big difference in sound deadening on side by side. Would definitely purchase again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 1, 2026
★★★★★ 5
AS GOOD AS ANY OTHER, WORKS GREAT
Size: 36 sqft, Size: 36 sqft
Used this in my 17 RAM 1500. This stuff works great, just as good as S...ss brand that is also sold on here. Same thickness and same tackiness. And this stuff sticks like crazy, once its laid down and rolled onto the surface, it is hard to remove, so I am pretty sure it will stay where I installed it. It is great value, one box was enough to do the whole roof of the truck with a little left over for small spots. I think it took a total of 2.5 boxes to do my whole crew cab, roof, floor and back wall and most of the firewall, and I also added a layer of their .25" foam. I do notice a difference in less outside noise, from wind and road. I will be doing my wife car soon, and this is the product I will be using again, I recommend this.
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Reviewed in the United States on January 14, 2026
★★★★★ 5
Dyna... who?
Size: 36 sqft
This stuff works great. Fraction of the cost to Dyna.. and just as good. Very sticky. Used in doors, floors and ceiling. Great product and performs flawlessly. I would highly recommend this.
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Reviewed in the United States on March 13, 2026
★★★★★ 4
Awesome, inexpensive alternative to name-brands!
Size: 36 sqft
Awesome. Stuck well with alcohol prep and time to let liquid flash-off. Very consistent, piece to piece. Backing peeled easily when desired. Compared to Amazon Basics, the butyl seemed a little thicker (infinitesimally) and stickier, foil was less thick than Amazon Basics. Very good value. Started with my nice car, but after completing project, sound dampened all cars in the immediate family it made such a noticeable difference in sound level and quality of music from soeakers. Recommended!
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Reviewed in the United States on October 21, 2025
★★★★★ 5
Easy to use
Size: 36 sqft, Size: 36 sqft
Very good and easy to use, made my 88 Chevy feel better
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Reviewed in the United States on June 2, 2026
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