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Gibson 15-18 Chevrolet Silverado 1500 LS 5.3L 3in/2.25in Cat-Back Dual Extreme Exhaust - Aluminized

SKU: GIB5658

Exhaust Systems

GIB Cat-Back - Dual Extreme...

Gibson 15-18 Chevrolet Silverado 1500 LS 5.3L 3in/2.25in Cat-Back Dual Extreme Exhaust - Aluminized

SKU: GIB5658

Exhaust Systems

GIB Cat-Back - Dual Extreme...

A$1,720.67
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.

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Description

Truck/Suv

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 Tips. Easy bolt-on installation. No welding required. Backed by a Lifetime Limited Warranty. If you want Extreme, this system is it.

Additional Information

Cat-Back Dual Extreme Exhaust System; Aluminized

Part Type

Exhaust System Kit

Data: v4.2 - Upd: 2026-11-10 23:09:42

Features

  • Aluminized Mandrel Bent Tubing
  • 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
  • Superflowâ„¢ CFT Muffler

Important Notice relating to US Domestic Market Trucks & Pickups

Many US-market trucks and pickups are available in multiple cab and bed-length configurations (e.g., Single Cab, Extended Cab, Double/Crew Cab, CrewMax, 5.5ft/6.5ft/8ft beds, etc.). Exhaust system fitment can vary between these chassis versions.

Where available, we list all compatible vehicles, cab types, and bed lengths in the product description. However, depending on your exact configuration, some systems may require optional extension/mid-pipes or minor modification for correct fitment.

Because of these variations, please carefully check your cab configuration and bed length before purchasing. If you are unsure, or if your vehicle has been modified, please reach out to a StreetFX agent.

(keyword: cat-back)

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-10 04:19:12

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Gibson, GIBSON EXHAUST, Gibson Performance Exhaust
StreetFX SKU gib5658
SFX Item ID 4083250
Accounting SKU gib-5658
Manufacturer SKU 5658
Manufacturer UPC 677418026825
Alternative References 5658, GIB-5658

Exhaust, Extreme Dual Split Rear, Cat-Back, Steel, Aluminized, Muffler, Polished Tips, GMC, Chevy, 5.3L, Kit

Gibson Dual Extreme exhaust systems are perfect for the drivers who want to take their vehicle to the next level. This dual bolt-on cat-back system exits behind the rear tires at an aggressive angle with a powerful exhaust tone. Add bold street looks with powerful dyno-tested and tuned street performance gains. Order the Dual Extreme exhaust system designed to fit your application.

Additional kit features:
• Aluminized heavy-duty or stainless steel tubing for extended durability
• Mandrel-bent tubing maintains constant exhaust flow through each bend for outstanding performance
• Superflow Performance muffler
• Polished T304 stainless steel tip with clampless connection design
• Zinc plated hangers and clamps
• Available in configurations for fitment on different makes and models

Product Attributes
UPC677418026825
BrandGibson Performance Exhaust
Tip CutSlant
QuantitySold as a kit.
Part TypeExhaust Systems
Tip ShapeRound
Tip FinishPolished
Exhaust TypeSingle in/Dual out
Product LineGibson Dual Extreme Exhaust Systems
System StyleCat-back
Tip IncludedYes
Tip Material304 stainless steel
Tip Quantity1
Exit LocationSplit rear
Muffler StyleBaffled and chambered
System FinishAluminized
Inlet Quantity1
Muffler FinishNatural
Tip Edge StyleRolled edge
System MaterialSteel
Muffler IncludedYes
Muffler MaterialSteel
Muffler QuantityOne
Hardware IncludedYes
Special AttentionIt 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.
Muffler ConfigurationSingle inlet/Dual outlet
Tip Outlet Size (in.)4.00
Tailpipe Diameter (in.)2.25 in.
Manufacturer's Part Number5658
Catalytic Converter(s) IncludedNo
Intermediate Pipe Diameter (in.)3.00 in.

Manufacturer Attributes
System Type Cat Back
Muffler Type Chambered
Exhaust Type Dual
Exit Position Dual Split Rear Behind Rear Tires
Tip Logo None
Exit Style Turn Out
Material Aluminized
Tip Diameter 4.000 in.
Tubing Diameter 3.000 in.
Inlet Inside Diameter 3.000 in.
Tail Pipe Diameter 2.250 in.
Outlet Outside Diameter 2.250 in.
Muffler Body Length 18.000 in.
Manufacturer Designation Dual Extreme Exhaust System
Product Class Exhaust System Kit
Construction/Type Cat-Back Dual Extreme Exhaust System; Aluminized
Product Outline Aluminized Mandrel Bent Tubing
Superflow™ CFT Muffler
Baffled/Chambered Muffler; No Internal Packing
Minimal Interior Drone - Aggressive Sound
Polished Stainless Slash-Cut Clamp On Tips
Incl. All Hardware/Factory Style Hangers
Hassle Free Bolt-On Installation
Lifetime Limited Warranty
Vehicle Brief Gibson Exhaust System Kit
Market 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 Tips. Easy bolt-on installation. No welding required. Backed by a Lifetime Limited Warranty. If you want Extreme, this system is it.

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