Home / Shop / Gibson 14-18 GMC Sierra 1500 Denali 6.2L 3.5in/2.25in Cat-Back Dual Extreme Exhaust - Stainless

Gibson 14-18 GMC Sierra 1500 Denali 6.2L 3.5in/2.25in Cat-Back Dual Extreme Exhaust - Stainless

SKU: GIB65671

Exhaust Systems

GIB Cat-Back - Dual Extreme

Gibson

Gibson 14-18 GMC Sierra 1500 Denali 6.2L 3.5in/2.25in Cat-Back Dual Extreme Exhaust - Stainless

SKU: GIB65671

Exhaust Systems

GIB Cat-Back - Dual Extreme

Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

We accept

Description

For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains. You can expect to experience gains on average of 15-20 horsepower. Gibson muffler provides a mean performance sound and complemented with polished Stainless Tip. Easy bolt-on installation. No welding required. Backed by a Lifetime Limited Warranty. If you want Extreme, this system is it.

Part Type

Exhaust System Kit

Data: v4.2 - Upd: 2026-09-29 01:31:37

Features

Baffled/Chambered Muffler; No Internal Packing
Hassle Free Bolt-On Installation
Incl. All Hardware/Factory Style Hangers
Lifetime Limited Warranty
Minimal Interior Drone - Aggressive Sound
Polished Stainless Slash-Cut Clamp On Tips
Stainless Steel Mandrel Bent Tubing
Superflow™ CFT Muffler

Specifications

Product Attributes - UPC: 677418027419
Product Attributes - Brand: Gibson Performance Exhaust
Product Attributes - Tip Cut: Slant
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Part Type: Exhaust Systems
Product Attributes - Tip Shape: Round
Product Attributes - Tip Finish: Polished
Product Attributes - Exhaust Type: Single in/Dual out
Product Attributes - Product Line: Gibson Dual Extreme Exhaust Systems
Product Attributes - System Style: Cat-back
Product Attributes - Tip Included: Yes
Product Attributes - Tip Material: 304 stainless steel
Product Attributes - Tip Quantity: 2
Product Attributes - Exit Location: Split side
Product Attributes - Muffler Style: Baffled and chambered
Product Attributes - System Finish: Natural
Product Attributes - Inlet Quantity: 1
Product Attributes - Muffler Finish: Natural
Product Attributes - Tip Edge Style: Rolled edge
Product Attributes - System Material: 409 stainless steel
Product Attributes - Muffler Included: Yes
Product Attributes - Muffler Material: 409 stainless steel
Product Attributes - Muffler Quantity: One
Product Attributes - Hardware Included: Yes
Product Attributes - Special Attention: It is illegal to install parts or components that bypass, defeat, or render inoperative the manufacturers’ technology and design necessary to reduce vehicle emissions to meet state and federal Clean Air Act standards.
Product Attributes - Muffler Configuration: Single inlet/Dual outlet
Product Attributes - Tip Outlet Size (in.): 4.00
Product Attributes - Tailpipe Diameter (in.): 2.25 in.
Product Attributes - Manufacturer's Part Number: 65671
Product Attributes - Catalytic Converter(s) Included: No
Product Attributes - Intermediate Pipe Diameter (in.): 3.50 in.

Reference Information

Brand Name/s	Gibson
StreetFX SKU	gib65671
SFX Item ID	4083465
Supplier Item Code	4083465
Manufacturer SKU	65671
Manufacturer UPC	677418027419
Alternative References	6.2L, 3.5in/2.25in

Brochures

Compatibility

Application Data

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	HIGH COUNTRY
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	HIGH COUNTRY
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	HIGH COUNTRY
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	HIGH COUNTRY
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	LTZ
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	LTZ
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	LTZ
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	CHEVROLET
Model	SILVERADO 1500
Submodel	LTZ
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	DENALI
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	DENALI
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	DENALI
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	DENALI
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2014
Ending Year	2017
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.9
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	4WD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

Universal	No
Make	GMC
Model	SIERRA 1500
Submodel	SLT
Beginning Year	2018
Ending Year	2018
Engine Type	V8
Liter	6.2
CID	376
CC	6162
Engine Size	6.2L/376
Engine Family	Chevy small block Gen V
Body Style	Crew Cab Pickup
Truck Bed Length in. (AAIA)	78.8
Transmission	Automatic
Drivetrain	RWD
Application Notes	Stainless; 3.5in./2.25in. Tubing; 4x9x18in. Oval Body; 3in. Center In/2.25in. Dual Outlet; 4in. Polished Slash-Cut Tip; Exit Behind Rear Tire;50 State Legal / California Emissions Compliant
Engine VIN Code	J

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Gibson 14-18 GMC Sierra 1500 Denali 6.2L 3.5in/2.25in Cat-Back Dual Extreme Exhaust - Stainless

Gibson 14-18 GMC Sierra 1500 Denali 6.2L 3.5in/2.25in Cat-Back Dual Extreme Exhaust - Stainless

Description

Part Type

Features

Specifications

Reference Information

Brochures

Compatibility

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