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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Magnaflow
MagnaFlow Performance Series Satin Stainless Steel Oval Muffler - 4x9x11in - 2.25in Inlet/Outlet (11378)
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
This is a universal fit component; please verify body dimensions and exhaust piping diameter for compatibility with your vehicle. The MagnaFlow 11378 Performance Series muffler is engineered to deliver a smooth, deep exhaust tone while optimizing flow for dyno-proven performance. Its free-flowing straight-through design utilizes a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill to manage sound without restricting exhaust velocity.
Constructed from 100% corrosion-resistant stainless steel, the weight-optimized 4x9x11-inch oval body features a clean satin finish suitable for custom builds or OE replacements. The bi-directional, reversible design allows for flexible installation in the orientation that best fits your chassis. This muffler is produced using CNC precision robotic manufacturing to ensure tight tolerances and long-term durability.
- Manufacturer Part Number: 11378
- Body Shape: 4in x 9in Oval
- Body Length: 11in
- Inlet/Outlet Diameter: 2.25in / 2.25in
- Inlet/Outlet Configuration: Center/Center
- Internal Construction: Straight-through perforated stainless steel core
- Material: 100% Stainless Steel
- Finish: Satin
- Warranty: Limited Lifetime Construction Warranty
Professional installation is highly recommended for proper fitment and welding.
Choose your Location
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Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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The Atlus Price Guarantee
If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
MagnaFlow Performance Series Satin Stainless Steel Oval Muffler - 4x9x11in - 2.25in Inlet/Outlet (11378)
Note: Images are for illustrative purposes only. The actual product may vary in appearance or contents. Please read the full description and verify the item you're receiving.
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
Price Match
If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
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This is a universal fit component; please verify body dimensions and exhaust piping diameter for compatibility with your vehicle. The MagnaFlow 11378 Performance Series muffler is engineered to deliver a smooth, deep exhaust tone while optimizing flow for dyno-proven performance. Its free-flowing straight-through design utilizes a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill to manage sound without restricting exhaust velocity.
Constructed from 100% corrosion-resistant stainless steel, the weight-optimized 4x9x11-inch oval body features a clean satin finish suitable for custom builds or OE replacements. The bi-directional, reversible design allows for flexible installation in the orientation that best fits your chassis. This muffler is produced using CNC precision robotic manufacturing to ensure tight tolerances and long-term durability.
- Manufacturer Part Number: 11378
- Body Shape: 4in x 9in Oval
- Body Length: 11in
- Inlet/Outlet Diameter: 2.25in / 2.25in
- Inlet/Outlet Configuration: Center/Center
- Internal Construction: Straight-through perforated stainless steel core
- Material: 100% Stainless Steel
- Finish: Satin
- Warranty: Limited Lifetime Construction Warranty
Professional installation is highly recommended for proper fitment and welding.
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