CORSA 21030BLK Sport Cat-Back SSE Black Tips for 2019-2025 Silverado/Sierra 5.3L

Vehicle Fitment

• 2019-2025 Chevrolet Silverado 1500 (Crew Cab, Short Bed, 147.5" Wheelbase, 5.3L V8, 2WD/4WD)
• 2019-2025 Chevrolet Silverado 1500 (Double Cab, Standard Bed, 147.5" Wheelbase, 5.3L V8, 2WD/4WD)
• 2019-2025 GMC Sierra 1500 (Crew Cab, Short Bed, 147.5" Wheelbase, 5.3L V8, 2WD/4WD)
• 2019-2025 GMC Sierra 1500 (Double Cab, Standard Bed, 147.5" Wheelbase, 5.3L V8, 2WD/4WD)
• 2019-2025 GMC Sierra Denali 1500 (Crew Cab, Short Bed, 147.5" Wheelbase, 5.3L V8, 2WD/4WD)
• 2019-2025 GMC Sierra Denali 1500 (Double Cab, Standard Bed, 147.5" Wheelbase, 5.3L V8, 2WD/4WD)

Fitment Notes

• Fits 147.5" wheelbase configurations only - 157" wheelbase models require part number 21030BLK is not correct for that WB; see PN 21031BLK
• Fits 5.3L V8 only - does not fit 6.2L V8 models
• Does not fit GMC Sierra 1500 Legacy (Classic) models - new body style (T1 platform) only
• May not fit vehicles equipped with factory mud flaps
• Black PVD tip variant - polished tip version sold separately under part number 21030
• Single side exit configuration - twin 4.0-inch black PVD tips exit at the driver side rear

Features

• Sport sound level delivers a distinct rumble at idle and an aggressive tone through the gears with zero highway drone
• Patented Reflective Sound Cancellation (RSC) technology acoustically tuned for the 5.3L EcoTec3 V8 in T1 platform trucks
• Straight-through, non-restrictive muffler design delivers a 57% increase in exhaust flow over stock
• Dyno-proven gains of +17 HP and +15 lb-ft of torque
• Mandrel-bent 3.0-inch T-304 stainless steel tubing for maximum flow and corrosion resistance
• Twin 4.0-inch dual-wall black PVD Pro-Series tips for a blacked-out, premium appearance
• Bolt-on installation with no cutting or welding required
• Limited lifetime warranty - proudly designed, engineered, and manufactured in Berea, Ohio

Specifications

• Part Number: 21030BLK
• System Type: Cat-Back, Single Side Exit (SSE)
• Pipe Diameter: 3.0 inches
• Tip Style: Twin 4.0-inch Dual-Wall Black PVD Pro-Series
• Tip Quantity: 2 (twin on single side exit)
• Material: T-304 Stainless Steel
• Sound Level: Sport (medium - most popular)
• Technology: Patented RSC (Reflective Sound Cancellation)
• Flow Increase: +57% over stock
• Performance: +17 HP / +15 lb-ft TQ (dyno-proven)
• Wheelbase: 147.5" only
• Drivetrain: 2WD / 4WD

Included Components

• 1x 3.0-inch Cat-Back Exhaust System (T-304 Stainless Steel)
• 1x Straight-Through RSC Muffler
• 2x 4.0-inch Dual-Wall Black PVD Pro-Series Tips
• 1x Hardware Kit (clamps, hangers, and mounting hardware)
• 1x Detailed Installation Instructions

Product Description

The CORSA 21030BLK is the Sport-level single side exit cat-back exhaust system for the 2019-2025 Chevrolet Silverado 1500, GMC Sierra 1500, and Sierra Denali 1500 with the 5.3L EcoTec3 V8 on the 147.5-inch wheelbase. Tuned specifically for the harmonics of the 5.3L V8 in the T1 generation full-size truck platform, the system delivers a distinct rumble at idle that builds into an aggressive growl under acceleration - all with zero interior drone at highway speeds. CORSA's patented RSC technology cancels resonant frequencies that cause drone while amplifying the tone that defines the EcoTec3 V8's character.

Built from mandrel-bent 3.0-inch T-304 stainless steel, this system delivers a 57% flow improvement over stock along with dyno-proven gains of +17 HP and +15 lb-ft of torque. The twin 4.0-inch black PVD dual-wall Pro-Series tips exit at the driver-side rear, providing a clean, blacked-out look that complements these trucks' aggressive factory styling. Installation is a straightforward bolt-on process with no cutting or welding required. Fits 147.5" wheelbase configurations only and new body style T1 Sierra/Silverado models exclusively. Backed by CORSA's limited lifetime warranty.