Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededFLOWMASTERPART NUMBER: 389-818176
818176 American Thunder Cat-Back Exhaust System Fits Select Toyota Tacoma 2.4L, 2WD/4WD, All Wheelbases
$1,24995
Ships on 09/15/2026
Lowest Price GuaranteeToyota
American Thunder Cat-Back Exhaust SystemFits Select Toyota Tacoma 2.4L 2.5 in. Tubing Dual Out Rear or Side Exit 50 Series HD Muffler 4 in. Polished Silver Tips Aggressive/Moderate Sound Stainless Steel Natural Finish
Flowmaster 389-818176 Features:
Flowmaster’s American Thunder Cat-Back Exhaust System is engineered for Toyota Tacoma models equipped with the 2.4L engine and built entirely from durable 409 stainless steel for long-lasting performance. The system features 3.00 in. and 2.50 in. mandrel-bent tubing that improves exhaust flow, enhances throttle response, and strengthens overall system durability. A 50 HD Series muffler provides strong performance gains while producing a deep, moderate exhaust tone both inside and outside the truck. Dual configuration options allow the system to exit either straight out the rear or at the side, finished with bold 4 in. polished stainless steel tips for a custom, high-end appearance. Dyno testing shows gains of up to 14 hp and 21 lb-ft at the rear wheels. Installation is simple thanks to factory-style hangers, included hardware, and clear instructions. Backed by Flowmaster’s Lifetime Limited Warranty.- 3.0 in. and 2.5 in. mandrel-bent 409 stainless steel tubing increases exhaust flow and enhances long-term durability
- Polished stainless steel tips provide a clean, premium custom appearance
- Factory-style hangers and complete hardware kit allow for a straightforward, direct bolt-on installation
- 50 HD Series muffler delivers a deep, aggressive-to-moderate performance sound while improving exhaust flow
- Dyno-proven increases of up to 14 hp and 21 lb-ft over the factory exhaust system
- Includes Flowmaster’s Lifetime Limited Warranty
- Tuned performance tone enhances sound quality inside and outside the cabin
- Multiple exit options offer flexibility for achieving a customized performance look
Part TypeExhaust System
BrandFLOWMASTER
Package Height11.25
Package Width16.25
Package Length58.5
Weight83.0 PG
Tailpipe Diameter (In.)2.5
Muffler Inlet Inside Diameter3 in.
Hangers IncludedYes
Main Piping Diameter2.50 in.
Tail Pipe QuantityDual
Inlet TypeFlanged
Exhaust Tip Material304 Stainless Steel
Catalytic Converter Quantity0
Exit LocationDual Out Rear or Dual Out Side
Inlet QuantityOne
Muffler Body Length18 in.
Sound LevelAggressive / Moderate
Muffler Body Material409 Stainless Steel
Exhaust Tip CutAngled
Gasket Or Seal IncludedNo
Exhaust Tip IntercooledNo
Pipe ColorSilver
System FinishNatural
Muffler Quantity1
Muffler Inlet Outside Diameter3.13 in.
Exit QuantityDual
Muffler Flanged OutletNo
Tip Quantity2
Exhaust Tip ResonatedNo
Muffler Outlet LocationDual
Exhaust TypeCat-Back
Catalytic Converter IncludedNo
Part CategoryPerformance Parts
Hardware IncludedYes
Exhaust Tip WallDouble Wall
Exhaust Tip Quantity2
Muffler Inlet LocationCenter
Exhaust Tip FinishPolished
Exhaust Tip EdgeRolled Edge
Valve IncludedNo
Muffler TypeReflection
Pipe Material409 Stainless Steel
Muffler Body Width10 in.
Tail Pipe Tapered OutletNo
Muffler Body ShapeOval
Mounting Bracket IncludedYes
Muffler Outlet Quantity2
Muffler FinishBlack High-Temperature Paint Finish
Mount TypeUses Factory Hangers
Clamps IncludedYes
Muffler Style50 Series HD
FinishNatural
Exit StyleDual Out Rear
Muffler Body Height5 in.
Tip IncludedYes
Clamping TypeFlat Band
Muffler Flanged InletNo
Spring Bolt Kit IncludedNo
Muffler Series50 Series HD
QuantitySold as a Kit
Muffler IncludedYes
Exhaust Tip ConnectionClamp-On
System StyleCat-Back
Tail Pipe Outlet Outside Diameter2.50 in.
Muffler ConfigurationSingle inlet/Dual outlet
System Material409 Stainless Steel
Valve TypeNot Applicable
Intermediate Pipe Diameter2.5 in (63.5 mm)
Exhaust Tip Diameter4 in.
Part FitmentDirect Fit
Vendor Part Number818176
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![2-Ton Low-Profile Aluminum Floor Jack [4,000 lbs. Capacity]](https://www.jegs.com/images/mini_200/500/555/555-80006.jpg)
JEGS
2-Ton Low-Profile Aluminum Floor Jack [4,000 lbs. Capacity]
Part Number : 555-80006
$20999$269.99
You Save$60.00
![Wheel Chock [Solid Rubber]](https://www.jegs.com/images/mini_200/500/555/555-w41001.jpg)
![Round Magnetic Parts Tray [5 1/2 in. Round]](https://www.jegs.com/images/mini_200/500/555/555-80080.jpg)
![Tool Box Drawer Liner [16 in. x 94 in. x 1/16 in.]](https://www.jegs.com/images/mini_200/500/555/555-w88996.jpg)
JEGS
Tool Box Drawer Liner [16 in. x 94 in. x 1/16 in.]
Part Number : 555-W88996
$2599$28.99
You Save$3.00
JEGS
Part Number : 555-80006
$20999$269.99
You Save$60.00
Some parts are not legal for use in California or other states with similar laws / regulations
