Name: Flowmaster American Thunder Active Valve Cat-Back for 2024+ Silverado/Sierra 1500 - 818206
Brand: Flowmaster
SKU: FLO818206
Price: 479.99 USD
Availability: InStock

Flowmaster American Thunder Active Valve Cat-Back for 2024+ Silverado/Sierra 1500 - 818206

$479.99 $1,799.95

The Flowmaster American Thunder Cat-Back Exhaust System, part number 818206, is designed for select 2024-2026 Chevrolet Silverado 1500 and GMC Sierra 1500 trucks equipped with the 6.2L engine. Constructed from durable 409 stainless steel, this active-valve exhaust system features a 3.5-inch inlet feeding a specially tuned 50 Series HD chambered muffler and dual 2.5-inch mandrel-bent tailpipes. Its OEM-style active valve integrates with the factory drive-mode controls, allowing the exhaust sound to change with Normal, Sport, and Off-Road modes while retaining the factory valve actuator.

Key Features & Specs:

Series: Flowmaster American Thunder
Type: Active-valve cat-back exhaust system
Engine Compatibility: 6.2L
Drivetrain: 2WD and 4WD
Material: 409 stainless steel
Inlet Diameter: 3.5-inch
Tailpipe Diameter: Dual 2.5-inch
Tubing Construction: 16-gauge mandrel-bent stainless steel
Muffler: Tuned Flowmaster 50 Series HD
Muffler Design: Chambered with integrated resonance chamber
Sound Level: Aggressive to moderate
Active Valve: OEM-style valve with integrated turndown
Valve Control: Retains factory dash/drive-mode sound control
Valve Actuator: Factory OEM actuator is reused
Exit Style: Dual rear through factory bumper cutout locations
Exhaust Tips: 4-inch black ceramic-coated 304 stainless steel
Tip Style: Rolled-edge angle-cut, double-wall
Performance: Maximum tested gains up to 15 hp and 13 lb-ft at the rear wheels
Installation: Uses factory hanger locations and connections
Included: Clamps, hangers, hardware, and installation instructions
Part Number: 818206
Warranty: Flowmaster Lifetime Limited Warranty