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The Gibson 65640 is a direct bolt-on cat-back exhaust system purpose-built for the 2010–2014 Chevrolet Tahoe and 2010–2014 GMC Yukon equipped with the 5.3L V8 engine. Part of Gibson',s Dual Sport Series, the 65640 exits its polished stainless tips cleanly behind the rear tire no hanging past the bumper, no trailer-hitch clearance issues. Built from 2.25-in. 409 stainless steel, mandrel-bent tubing and backed by a Lifetime Limited Warranty, this cat-back system delivers dyno-proven power gains, an aggressive tone, and a factory-quality finish that lasts.
Key Features
- 2.25-in. Mandrel-Bent Tubing: Mandrel bending preserves full tube diameter through every curve, eliminating flow restrictions that crush-bent tubing creates.
- T-304 Polished Tips: 3.50-in. round slash-cut tips in T-304 stainless a higher-grade alloy for a mirror finish that resists discoloration and corrosion season after season.
- Direct Bolt-On — No Welding: Uses factory hangers, all clamps included. Most installs take 1–2 hours with basic hand tools.
- Dyno-Proven Power: Average gains of 10–15 horsepower and 15–20 lb-ft of torque real tested numbers. Peak gains occur in the 1,800–3,000 RPM range, exactly where a 5.3L Tahoe or Yukon spends most of its time towing, merging, and passing.
- Dual Sport Exit: Both 3.50-in. tips exit cleanly behind the rear tire, protecting trailer coupler clearance and giving the truck a purposeful look without bumper overhang.
- Made in the USA: Every Gibson exhaust is fabricated domestically.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2010-2014 | Chevrolet | Tahoe | 5.3L |
| 2010-2014 | GMC | Yukon | 5.3L |
Specifications
| Manufacturer | Gibson |
|---|---|
| Manufacturer Part Number | 65640 |
| Product Type | Catback |
| Fitment Type | Vehicle specific |
| Tubing Diameter | 2.25-in. 409 Stainless mandrel bent tubing. |
| Tip Description | 3.50in. Polished T304 Stainless, Round Slash- Cut Tip, Clamp on. |
| Tip Specification | Inlet 2.25in., Outlet 3.50in., L-12in. |
| Muffler Description | Baffled &, Chambered Design, No internal Packing, Minimal Interior Drone, Aggressive Sound |
| Muffler Dimension | 8 in. Round Body, 3 in. Offset Intlet,2.25 in. Dual Outlet, , L-24 in. |
| Additional Description | Includes all hardware and factory style hangers for easy bolt on installation. |
| Exit Position | Exits Behind Rear Tire. |
| Warranty | Lifetime Limited Warranty |
What's Included
- One new Gibson catback in the exact configuration identified by manufacturer part number 65640
- Hardware and accessories only when supplied for this exact part number
About Gibson
Gibson develops vehicle-specific and universal exhaust components for street, truck, SUV, and performance applications. Selection and installation requirements remain exact-part-number specific.
Related Gibson Products
- Gibson 21-22 GMC Yukon/ Chevrolet Tahoe 5.3L 2/4wd Cat-Back Dual Sport Exhaust
- Gibson 21-22 GMC Yukon / Chevrolet Tahoe 5.3L 2/4wd Cat-Back Dual Split Exhaust - Stainless
- Gibson 21-22 GMC Yukon XL 1500/ Suburban 1500 5.3L 2/4wd Cat-Back Dual Sport Exhaust
Browse the Gibson collection for related exhaust systems and components.
Frequently Asked Questions
Which vehicles fit Gibson GIB65640?
Gibson GIB65640 is listed for 2010-2014 Chevrolet Tahoe, and 2010-2014 GMC Yukon. Confirm the exact engine, trim, drivetrain, body or cab configuration, exhaust layout, and every application note before ordering.
What should I verify before ordering Gibson GIB65640?
Match the exact part number, system type, material, finish, tubing and connection diameters, exhaust configuration, package contents, and current manufacturer notes shown in this listing.
What should be checked when installing Gibson GIB65640?
Verify all interfaces, hanger positions, tip and body clearances, clamp or fastener torque, leak-free operation, and local emissions requirements. Reinspect the system after its first heat cycle.
Installation Instructions
Follow the current Gibson instructions and vehicle service information for this exact part number. Work on a cool exhaust, support the vehicle safely, confirm all interfaces and clearances, align the system before final tightening, test for leaks, and inspect the installation again after the first heat cycle.
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