Flowmaster

Flowmaster 817664 American Thunder Cat-back Exhaust System

$1,299.95 USD

Sale Sold out

Shipping calculated at checkout.

Low stock: 1 left

Description & Features

Flowmaster 817664 American Thunder Cat-back Exhaust System

The American Thunder® cat-back exhaust system for 2009-2021 Toyota Tundra trucks with the 4.6L, 4.7L or 5.7L engine is perfect for the person looking for an deep aggressive exterior tone with a mellow growl inside the truck and all of the performance benefits you expect from Flowmaster®. This bolt-on emissions-legal system features all stainless steel construction, a specially designed dual inlet Super 40® Series muffler flowing into dual 2.50-inch mandrel-bent tailpipes for maximum performance with a deep tone. The kit comes with two sets of final pipes for either a dual out the back look or dual out behind the rear tires, which is beneficial for towing. The tailpipes are finished off with a pair of 3.50-inch double wall polished stainless steel tips. The system includes all necessary parts and hardware for easy at home installation. Note: Fits 2/4 wheel drive. Does not fit regular cab/short bed or double cab/long bed models. Only fits 2009 models built after 08/2008.

Large 3.50-inch Polished 304 Stainless Steel Tips
Side Exit Tailpipes Ideal for Towing Applications
Mandrel-bent Stainless Steel Construction
Super 40 Series Performance Muffler
Deep Aggressive Performance Tone
Uses the Factory Hanger Locations
Multiple Exit Styles Provided in Kit
Includes all Necessary Hardware
Clears the Factory Spare Tire
Lifetime Limited Warranty
Easy Installation

Specifications

Brand	Flowmaster
California Proposition 65	Yes
California Proposition 65 Chemical Name	Nickel (Metallic)
CARB (California) Compliant	Yes
Catalytic Converter Included	No
Catalytic Converter Quantity	0
Category	Exhaust
Clamping Type	Flat Band
Clamps Included	Yes
Drive	2WD
Emission Code	5
Exhaust Series	American Thunder
Exhaust Tip Color	Silver
Exhaust Tip Connection	Clamp-On
Exhaust Tip Cut	Angled
Exhaust Tip Diameter	3.50
Exhaust Tip Edge	Angle Cut
Exhaust Tip Finish	Polished
Exhaust Tip Intercooled	No
Exhaust Tip Length	13.00
Exhaust Tip Material	304 Stainless Steel
Exhaust Tip Quantity	2
Exhaust Tip Resonated	No
Exhaust Tip Shape	Round
Exhaust Tip Wall	Double Wall
Exit Style	Dual Out Rear
Finish	Natural
Gasket Or Seal Included	No
Grade Type	Performance
Hangers Included	Yes
Heat Shield Included	No
Inlet Diameter	2.50
Inlet Type	Flanged
Main Piping Diameter	2.50
Mounting Bracket Included	Yes
Muffler Body Height	5.00
Muffler Body Length	13.25
Muffler Body Material	409 Stainless Steel
Muffler Body Shape	Oval
Muffler Body Width	12.00
Muffler Finish	Black High-Temperature Paint Finish
Muffler Flanged Inlet	No
Muffler Flanged Outlet	No
Muffler Included	Yes
Muffler Inlet Connection	Slip-Fit
Muffler Inlet Inside Diameter	2.50
Muffler Inlet Outside Diameter	2.63
Muffler Outlet Connection	Slip-Fit
Muffler Outlet Quantity	2
Muffler Part Number	Kit Only
Muffler Quantity	1
Muffler Series	Super 40 Series
Muffler Type	Chambered
part type	Exhaust System
Pipe Color	Silver
Pipe Material	409 Stainless Steel
Product Type	Exhaust System
Sound Level	Aggressive
Spring Bolt Kit Included	No
Sub Category	Exhaust and Tail Pipes
Tail Pipe Outlet Outside Diameter	2.50
Tail Pipe Quantity	Dual
Tail Pipe Tapered Outlet	No
Type	Cat-Back
Valve Included	No
Valve Type	Not Applicable
Warning	California Proposition 65

Packaging Information

Weight: 63.3 lbs
Dimensions: 52.5 x 16.3 x 15 IN

Safety

⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information visit www.P65Warnings.ca.gov

Warranty

View Warranty (PDF)

Installation Instructions

View Installation Instructions (PDF)

⚠ Fitment Notes

DOES NOT FIT REGULAR CAB/SHORT BED OR DOUBLE CAB/LONG BED MODELS.
Fits 2009-2021 Toyota Tundra 4.6L, 4.7L or 5.7L engine with 145-inch Wheelbase only. Note: Does not fit regular cab/short bed or double cab/long bed models. Only fits 2009 models built after 08/2008.