2019-2026
2014-2018
2007-2013
1999-2006
FREE 1 to 3-Day Delivery on Orders $149+ Details
Find Mufflers for your Sierra 1500
Flowmaster Super 40 Series Offset/Offset Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)
Item S591088
Sale
On Sale
-10% $154.76 Was $171.95
Military, Medical & First Responders
$7.74 Available in AT Cash Rewards.
Confirm Eligibility
Confirm Eligibility
Choose options to add to cart.
Saved - View your saved items
We're sorry. We couldn't save this product at this time.
or use
Shop Owners Save More!
Sign up for our dealer program
Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- _x000D_
- Super 40 Stainless Steel - 2.50 Offset In / 2.50 Offset Out - Aggressive Sound _x000D_
- Estimated Ship Date: 12/08/2025 _x000D_
- Free Shipping - Lower 48 US States _x000D_
- Excellent Performance On High Horsepower Vehicles _x000D_
- Noticeable Interior Resonance _x000D_
- Deep Aggressive Sound Exhaust Note _x000D_
- Durable Fully Welded 409 Stainless Steel _x000D_
- Body Height 5.00 In _x000D_
- Body Length 13.50 In _x000D_
- Body Material 409 Stainless Steel _x000D_
- Body Width 10.00 In _x000D_
- Category Exhaust _x000D_
- Clamps Included No _x000D_
- Emission Code 5 _x000D_
- Finish High-Temperature Paint _x000D_
- Fitment Universal; Some Adaptation May Be Required _x000D_
- Grade Type Performance _x000D_
- Hanger Included No _x000D_
- Heat Shield Attached No _x000D_
- Inlet Connection Slip-Fit _x000D_
- Inlet Diameter 2.50 In _x000D_
- Inlet Inside Diameter 2.50 In _x000D_
- Inlet Location Offset _x000D_
- Inlet Outside Diameter 2.63 In _x000D_
- Inlet Quantity 1 _x000D_
- Inlet Type Clamp-On / Weld-On _x000D_
- Mount Type Uses New Hangers Not Included _x000D_
- Muffler Series Super 40 Series _x000D_
- Muffler Type Chambered _x000D_
- Outlet Connection Slip-Fit _x000D_
- Outlet Inside Diameter 2.50 In _x000D_
- Outlet Location Offset _x000D_
- Outlet Outside Diameter 2.63 In _x000D_
- Outlet Quantity 1 _x000D_
- Overall Length 19.50 In _x000D_
- Product Type Street Mufflers _x000D_
- Reversible No _x000D_
- Shape Oval _x000D_
- Sound Level Aggressive _x000D_
- Tunable No _x000D_
- Vehicle Type 4/6 Cyl Engine, Classic Muscle Car, Late Model Muscle Car, Street Rod, Street/Strip, Truck/SUV _x000D_
| Brand | Flowmaster |
| Muffler Inlet Size | 2.50 Inch |
| Muffler Installation Type | Clamp-On Muffler |
| Muffler Type | Chambered Muffler |
Description
Performance Muffler. The Flowmaster Super 40 Series Offset/Offset Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet delivers an aggressive exhaust sound ideal for street and strip use. It provides excellent performance, particularly on high horsepower and forced induction vehicles, enhancing both power output and exhaust tone.
_x000D__x000D_Construction and Appearance. Crafted from durable 16 gauge 409 stainless steel, this chambered muffler features Flowmaster's Delta Flow technology for improved performance and reduced interior resonance. It is fully MIG welded and finished with high-temperature black paint for enhanced durability and a sleek appearance.
_x000D__x000D_Installation. Installation requires basic mechanical skill and typically does not require drilling. It uses slip-fit clamp-on or weld-on connections. New hangers are required but not included with the muffler.
_x000D__x000D_Application. This muffler fits a wide range of vehicles including those with 4 to 6-cylinder engines, classic and late model muscle cars, street rods, street/strip vehicles, and trucks or SUVs. It features universal fitment but may require some adaptation during installation.
Flowmaster 852548
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
4.7
Reviews of Flowmaster Exhaust Products (500+)
Questions & Answers
No questions about this product yet.
Ask the First Question
