CORSA 21125BLK Sport 3" Cat-Back System for 2021-2024 Chevy Tahoe/Yukon 5.3L V8

Vehicle Fitment

• 2021-2024 Chevrolet Tahoe (5.3L V8, short wheelbase 120.9")
• 2021-2024 GMC Yukon (5.3L V8, short wheelbase 120.9")

Fitment Notes

• Short-wheelbase SUVs only (120.9"). Does not fit Suburban or Yukon XL (long wheelbase).
• Engine-specific: 5.3L V8 only. Excludes 6.2L V8 and 3.0L Duramax diesel models.
• Single-side exit with twin 4.0" black PVD tips (BLK variant).
• System removes the factory flow-operated exhaust valves; no valve modules are reused.
• Direct bolt-on; uses factory mounting points. Professional installation recommended.

Features

• 3.0" T-304 stainless, mandrel-bent cat-back for improved flow
• RSC® "No-Drone" muffler tuning for aggressive outside note and quiet cruise
• External-valve delete design reduces backpressure vs. stock valved system
• Twin 4.0" dual-wall, slash-cut black PVD tips
• Straight-through muffler architecture for measurable power gains
• Precision fitment for GM full-size short-wheelbase SUVs (5.3L)
• All stainless hardware and clamps; anti-seize recommended on threads
• Limited lifetime structural warranty on exhaust components

Specifications

• Part Number: 21125BLK (black PVD tips)
• System Type: Cat-back, single-side exit with twin tips
• Pipe Diameter: 3.0"
• Tip Size/Style: 4.0" twin, dual-wall, slash-cut (black PVD)
• Sound Level: Sport
• Material: T-304 stainless steel
• Wheelbase Requirement: 120.9" (Tahoe/Yukon)
• Position: Cat-back (from mid-section to tail)

Included Components

• Head pipe (short-wheelbase configuration)
• Muffler assembly
• Mid-pipe and side exit tail pipe
• Twin 4.0" black PVD tip assembly
• Stainless clamps and mounting hardware
• Installation instructions

Product Description

The CORSA 21125BLK Sport cat-back transforms the exhaust character of 5.3L V8 Tahoe and Yukon short-wheelbase models (120.9"). CORSA's straight-through, 3.0" T-304 system and RSC® acoustic tuning deliver an aggressive tone under throttle with drone-free cruising, while the factory valve delete reduces restriction for measurable gains. The BLK variant includes twin 4.0" dual-wall, slash-cut black PVD tips for a stealth finish.

Engineered for precise fitment on 5.3L SWB SUVs and designed to bolt to OEM locations, this kit includes all required clamps and hardware. Replace gaskets as needed and re-torque after heat-cycle.