Upgrade the sound, power, and durability of your Ram 2500 with the Flowmaster American Thunder Cat-Back Exhaust System, engineered specifically for 2014–2024 Ram 2500 trucks equipped with the 6.4L HEMI engine. This system delivers a moderately aggressive interior tone and an aggressive exterior exhaust note while maintaining Flowmaster’s signature performance and durability.

Built for strength and long-term reliability, the system features a stainless steel 50 Series HD performance muffler with large 4.00-inch internals. The dual 3.00-inch mandrel-bent stainless steel tailpipes reduce restriction and improve exhaust flow for enhanced performance. You can choose between two tailpipe exit options: dual out the sides behind the rear wheels (ideal for towing) or dual straight out the rear under the bumper. Each exit is finished with large 4.00-inch polished stainless steel tips for a premium look.

This bolt-on emissions-legal system uses factory hanger locations, clears the spare tire, and includes all hardware and detailed instructions for an easy installation. Covered by Flowmaster’s Lifetime Limited Warranty.

This exhaust system delivers the ideal blend of sound, performance, and premium quality for Ram 2500 owners seeking a durable and aggressive cat-back upgrade.

Fitment (Separate Section — Required Format)

Fits 2014–2024 Ram 2500
Fits models equipped with the 6.4L HEMI engine
Fits Crew Cab Standard Bed
Fits Crew Cab Long Bed
Fits Mega Cab models
Fits trucks with coil spring rear suspension
Fits 149.4-inch wheelbase
Fits 160.5-inch wheelbase
Fits 169.4-inch wheelbase
Fits 2WD models
Fits 4WD models
Does NOT fit trucks with optional factory airbag suspension

Features

• Stainless Steel 50 Series HD Performance Muffler

• Dyno Tuned for Maximum Performance

• Mandrel-Bent Stainless Steel Tubing

• Uses Factory Hanger Locations

• Clears Factory Spare Tire

• Stainless Steel Construction

• Includes Two Tailpipe Exit Options

• Lifetime Limited Warranty

Technical Specifications (No Nested Bullets)

• Brand: Flowmaster

• California Proposition 65: Yes

• CARB Compliant: Yes

• Category: Exhaust

• Clamping Type: Flat Band

• Clamps Included: Yes

• Drive: 2WD, 4WD

• Emission Code: 5

• Exhaust Series: American Thunder

• Exhaust Tip Color: Silver

• Exhaust Tip Connection: Clamp-On

• Exhaust Tip Cut: Angled

• Exhaust Tip Diameter: 4.00 in

• Exhaust Tip Edge: Angle Cut

• Exhaust Tip Finish: Polished

• Exhaust Tip Intercooled: No

• Exhaust Tip Length: 13.00 in

• 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, Dual Out Side

• Finish: Natural

• Gasket or Seal Included: No

• Grade Type: Performance

• Hangers Included: Yes

• Heat Shield Included: No

• Inlet Diameter: 3.50 in

• Inlet Type: Flanged

• Main Piping Diameter: 3.00 in

• Mount Type: Flanged

• Mounting Bracket Included: No

• Muffler Body Height: 5.00 in

• Muffler Body Length: 18.25 in

• Muffler Body Material: 409 Stainless Steel

• Muffler Body Shape: Oval

• Muffler Body Width: 10.00 in

• Muffler Color: Black

• Muffler Finish: Black High-Temperature Paint

• Muffler Flanged Inlet: No

• Muffler Flanged Outlet: No

• Muffler Included: Yes

• Muffler Inlet Connection: Slip-Fit

• Muffler Inlet Inside Diameter: 3.00 in

• Muffler Inlet Outside Diameter: 3.00 in

• Muffler Outlet Connection: Slip-Fit

• Muffler Outlet Quantity: 2

• Muffler Part Number: Kit Only

• Muffler Quantity: 1

• Muffler Series: 50 Series HD

• Muffler Type: Reflection

• Part Type: Exhaust System

• Pipe Color: Silver

• Pipe Material: 409 Stainless Steel

• Product Type: Exhaust System

• Sound Level: Aggressive / Moderate

• Spring Bolt Kit Included: No

• Sub Category: Exhaust and Tail Pipes

• Tail Pipe Outlet Outside Diameter: 3.00 in

• Tail Pipe Quantity: 2 (Dual)

• Tail Pipe Tapered Outlet: No

• Tip Logo: Embossed

• Type: Cat-Back

• Valve Included: No

• Valve Type: Not Applicable