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Flowmaster 2025-2026 Ram 1500 3.0L - American Thunder Cat-Back Exhaust System - 818199

MSRP: $2,682.43
$1,849.95
(You save $832.48 )
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SKU:
flo818199
UPC:
090127958551
Box Weight:
106.55 LBS
Shipping:
Calculated at Checkout
Sound Level:
Aggressive to Moderate
Exhaust Type:
Cat-Back
Series:
American Thunder
Material:
409 Stainless Steel
Pipe Size:
3.00in
Fitment:
2025-2026 Ram 1500 3.0L
Engine:
3.0L
Warranty:
Lifetime Limited Warranty

Shipping truck Free Shipping On Most Orders Over $99. Within The Continental US. A Signature Will Be REQUIRED For Delivery On All Orders Over $250.00. Exclusions May Apply.  Learn More

Flowmaster's® American Thunder Cat-back true dual exhaust system for the 2025-2026 RAM 1500 with the 3.0-liter Standard and High Output engines gives you a great way to customize your RAM 1500 to your personality. This performance exhaust system fits both 2/4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble-free service and performance. Features include dual 3.00-inch inlet pipes leading into a custom tuned 409 stainless steel American Thunder series muffler for great sound and maximum performance.

This Cat-back system includes Flowmaster's exclusive Scavenger X-Pipe with our D-Port technology for maximum exhaust pulse velocity and helps to create a deep exhaust tone. The dual 3.0-inch mandrel-bent tailpipes exit in the stock location in the factory bumper cut outs with 4.5-inch black ceramic coated tips. Included in the tailpipe assemblies are tuned resonators that help maintain a comfortable experience in the cab.

On Standard Output models this system turns the exhaust into a true dual style system like the High Output and RHO models. This will allow for better overall performance gains and will work better with any future engne modifications. Max dyno gains of 35 hp and 33 lb-ft at the rear wheels (HO models) deliver power you can feel.

The system uses all the factory hanger locations and connections for an easy installation that you can do at home.

Highlights

  • An Super 40 series muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow
  • Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • 3.0-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Converts Standard Output models to a true dual style system like on High Output and RHO models
  • Max increases of up to 35 hp and 33 lb-ft over the stock exhaust at the wheels
  • Tuned performance tones offer quality sound inside and outside of the truck
  • Black ceramic coated stainless steel tips add a custom look to the vehicle
  • Lifetime Limited Warranty
  • American Thunder cat-back true dual exhaust system
  • 409 stainless steel construction
  • Dual 3.00-inch mandrel-bent tailpipes
  • Scavenger X-Pipe with D-Port technology
  • Custom-tuned American Thunder muffler and tuned resonators
  • Black ceramic-coated exhaust tips
  • Uses factory hanger locations and connections

Product Overview

The Flowmaster American Thunder cat-back true dual exhaust system is designed for 2025-2026 RAM 1500 models equipped with the 3.0-liter Standard Output and High Output engines. It provides a true dual exhaust configuration for Standard Output models and is compatible with both two-wheel-drive and four-wheel-drive applications. The system does not fit RHO models.

Constructed from 409 stainless steel, this exhaust system features dual 3.00-inch inlet pipes, a custom-tuned American Thunder muffler, and Flowmaster's Scavenger X-Pipe with D-Port technology. Tuned resonators help maintain a comfortable in-cab experience, while the mandrel-bent tailpipes exit through the factory bumper cutouts in the stock locations. Black ceramic-coated tips provide a distinct finished appearance.

The system uses factory hanger locations and connections for a straightforward installation. Installation instructions and required hardware are included. Manufacturer-provided testing indicates maximum gains of up to 35 horsepower and 33 lb-ft of torque at the rear wheels on High Output models. This Flowmaster system is backed by a Lifetime Limited Warranty.

At a Glance

  • Kits include installation instructions and all necessary hardware
  • Backed by Flowmaster's Lifetime Limited Warranty

Specifications

  • Brand: Flowmaster
  • Part Number: 818199
  • Series: American Thunder
  • Product Type: Cat-Back
  • Vehicle Application: 2025-2026 Ram 1500 3.0L
  • Pipe Size: 3.00in
  • Material: 409 Stainless Steel
  • Sound Level: Aggressive to Moderate
  • Warranty: Lifetime Limited Warranty
  • Shipping Weight: 106.55 lbs

Vehicle Fitment

These are suggested fitment applications. Engine, cab, bed, and exhaust configuration vary by vehicle, so contact our team at 1-844-JBO-BOLT and we will confirm fitment for your exact vehicle before you order.

Fitment Notes

  • Fits 2025-2026 RAM 1500 3.0L Standard and High Output, American Thunder Cat-Back 409 stainless steel.
  • Does not fit RHO models.

Compatible Vehicles

  • Ram 1500
    • Years: 2025, 2026
    • Fits: 3.0L Standard Output and High Output, two-wheel drive and four-wheel drive; does not fit RHO models
    • Trims for 2025: Big Horn, Laramie, Limited, Limited Longhorn, Lone Star, Rebel, Special Service, Tradesman, Tradesman HFE, Tungsten, Warlock
    • Trims for 2026: Big Horn, Express, Laramie, Limited, Limited Longhorn, Lone Star, Rebel, Tradesman, Tungsten, Warlock

Frequently Asked Questions

What vehicles does the Flowmaster 818199 fit?
It is listed for 2025-2026 Ram 1500 3.0L. See the Vehicle Fitment section for every listed year, make, and model. Fits 2025-2026 RAM 1500 3.0L Standard and High Output, American Thunder Cat-Back 409 stainless steel. Does not fit RHO models.

What will it sound like?
Flowmaster describes this American Thunder cat-back as aggressive to moderate.

What is included?
Installation instructions and required hardware are included.

What warranty covers it?
This Flowmaster system is backed by a Lifetime Limited Warranty.

What is it made of?
Constructed from 409 stainless steel, this exhaust system features dual 3.00-inch inlet pipes, a custom-tuned American Thunder muffler, and Flowmaster's Scavenger X-Pipe with D-Port technology.

Who can help me choose the right part?
Call our team at 1-844-JBO-BOLT with your year, make, model, and engine and we will match the right Flowmaster part to your vehicle.

Shipping and Support

This Flowmaster part ships from our warehouse to addresses in the continental USA. For delivery outside the continental USA, see our shipping outside the continental USA page. Questions about application or installation? Call 1-844-JBO-BOLT.

Shipping & Returns

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HOW TO RETURN AN ORDER

To return an order, please contact us HERE, with detailed information regarding the return. We can only accept items that are in new condition and have never been installed. We cannot accept any used, previously installed, or damaged items. If an item is sent back to us used, previously installed and/or damaged, it is now the property of Just Bolt-On Performance Parts and no refund will be issued. All returns must include the provided Return Merchandise Authorization (RMA) form or RGA number, to help expedite the return process. We will then provide the Return Shipping Address for the return. Pictures of the parts being returned are also required. All returns are subject to a 20% Restocking Fee of the original purchase price. Some orders cannot be return – see the list of non-returnable orders below. 

RETURN POLICY

The buyer has 30 days from original purchase to initiate a return RMA and forward tracking information to us. No refund will be given for products that arrive after the 30 days from the original purchase date. Tracking information is required for all returns. When shipping an item back to us, we recommend that you use UPS, FedEx or any other carrier that offers signature confirmation and insurance, as we are not responsible for lost or damaged packages. Only the signature of an Just Bolt-On Performance Parts employee will suffice as proof of delivery. The customer agrees to bear all shipping and insurance charges, and all risk of loss during return shipment. If an order is refused “Returned to Sender”, no refund will be issued. Buyer is responsible for all return shipping charges.

We will not accept a return of an item that is damaged or defective if it has been used/installed, please inspect all orders as soon as you receive them and contact us HERE within 72 hours. If the order is damaged during shipment, Just Bolt-On Performance Parts will replace the item free of charge. 

When you purchase items that qualify for a promotional offer such as Buy "X" number of items, Get "X" number of items free, the discount reflecting the price of the lowest-priced item is proportionally applied to each eligible item. If any item is returned, the refund will be equal to the original price of the item reduced by the proportional discounted amount.

RECEIVED DAMAGED ORDER

We try our best to prevent damage to all packages during transit by packing each order carefully. From time to time, though, damage will occur despite our precautions.  If you receive an item that has been damaged in shipping, please call us within 72 hours of receipt and we will set up a claim for the product. Once this claim has been processed by the courier, we will reach out to you to return the product and send out a replacement.

We may request pictures to further assist with the completion of the claim.

The courier will reach out to you after the claim has been filed over the phone; please provide a reliable contact number when setting up your damage claim.

DEFECTIVE PRODUCTS

If you receive a defective product, please contact us within 72 hours, and we will process your return or replacement free of shipping charge. Contact us HERE to process your return.

In the event of a defect that occurs outside our return policy, but within the manufacturer warranty, please contact the manufacturer directly to process your return. The manufacturer will have sole determination of the outcome of the claim. As a courtesy to our customers, Just Bolt-On Performance Parts will be happy to try to facilitate a thorough review of the claim, but we have no final say in the decision made by the manufacturer (i.e. approvals, denials, fees, etc.).

Just Bolt-On Performance Parts is not responsible for any labor costs which occur as the result of the installation of wrong or defective parts.

NON-RETURNABLE ORDERS

Returns will not be given for the following items:

·       Just Bolt-On Performance Parts gift cards.

·       Any products sold as "Open Box". 

·       Non-defective used or installed items.

·       Wheels that have already been mounted and balance. This includes wheels packages from Just Bolt-On Performance Parts.

·       All special orders, custom, and/or built to order parts. This includes but not limited to, Weld Offroad, Addictive Desert Design, Rigid Industries, Please contact us prior with any questions. 

·       All electronics including but not limited to handheld devices and chargers.

·       Batteries, fluids, lubricants and all maintenance products.

·       All orders that required freight delivery.

·       International orders that shipped outside of the United States.

REFUNDS

Once the return is received, please allow 5-7 business days for the refund to be issued. All items included in the return are fully inspected by our Returns Department prior to issuing a refund. All refunds will be issued to the original payment method. Allow 3-5 business days for the refund to settle back to the original payment method. The original shipping and handling charges are non-refundable. Processing time will vary, depending on your financial institution. 


NEED TO CANCEL

We strongly suggest you call us at 1-844-526-2658 as soon as possible after placing your order if you need to change or cancel it, as orders are processed within minutes!  If you email us, we may not receive them in time to stop the order from shipping out.  Please double-check that your order details are correct before submitting your order during checkout.

An order that has already received tracking information and/or shipped cannot be canceled.  If an order has been assigned a tracking number but the tracking information has not updated, this does not mean the order has not shipped. Please contact us HERE to set up a Return Merchandise Authorization (RMA) once your order has been received.

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