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SKU: 615639 | UPC: 677418033228
Gibson 2021-2023 GMC Yukon XL 1500/Chevrolet Suburban 1500 5.3L Cat-Back Single Exhaust - Stainless
Gibson 615639 stainless cat-back exhaust system replaces the factory exhaust from the catalytic converter back with a single side exit behind the rear tire. Designed for 2021-2023 Chevrolet Suburban 1500 and GMC Yukon XL 1500 equipped with 5.3L V8 engines. Dyno tests prove gains of 10-15 horsepower and 15-20 lb-ft torque from 1800-3000 RPM for stronger acceleration, towing, hill climbing and passing power while staying quieter inside the cab.
Key Features
- Performance Gains: Dyno-tested increases of 10-15 HP and 15-20 lb-ft torque at low-end RPM for real-world power in towing and daily driving
- Single Side Exit: Positions outlet behind rear tire for clean appearance and balanced flow without drone
- Cab Comfort: Engineered to reduce interior noise more than other performance exhausts for a refined drive
- Bolt-On Design: Direct fit installation using factory hangers with no welding or cutting required
- Stainless Construction: Durable stainless steel tubing and muffler resist corrosion for long-lasting performance
Product Notes
- 3-inch pipe diameter with 4x6x14-inch muffler and 4-inch angle-cut tip for optimal flow
- EPA compliant for street-legal use across all states
- 59 lbs product weight ships in 48 x 18 x 18 inch box
Installation Notes
- Professional installation recommended.
- Hassle-free bolt-on process takes 1-2 hours with basic tools
- Uses provided stainless clamps and hangers for secure factory-like fit
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2023 | Chevrolet | Suburban | Commercial |
| 2021-2023 | Chevrolet | Suburban | LS |
| 2021-2023 | Chevrolet | Suburban | LT |
| 2021-2023 | Chevrolet | Suburban | Premier |
| 2021-2023 | Chevrolet | Suburban | RST |
| 2021-2023 | Chevrolet | Suburban | Z71 |
| 2021-2023 | GMC | Yukon XL | AT4 |
| 2021-2023 | GMC | Yukon XL | SLT |
Why Choose Gibson?
- Proven dyno results from in-house testing ensure verified power gains
- Premium stainless materials built for daily driving and heavy towing
- Lifetime limited warranty covers defects for peace of mind
Frequently Asked Questions
-
Q: Does this fit 2021-2023 Suburban and Yukon XL with 5.3L V8 only?
A: Yes, confirmed fit for listed 5.3L models and submodels. verify engine size before purchase -
Q: What material is used in the exhaust?
A: High-grade stainless steel tubing, spun saturator muffler and polished 4-inch tip for rust resistance and shine -
Q: What warranty and sound level can I expect?
A: Lifetime limited warranty. provides aggressive exterior tone with minimal cab drone for comfortable cruising
Shipping & Handling
- Method: UPS Ground or Freight
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed at 48 x 18 x 18 inches
- Weight: 59 lbs
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