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Gibson

Gibson 08-10 Hummer H3 Alpha 5.3L 2.5in Cat-Back Dual Split Exhaust - Stainless

$1,523.91 $627.48 Save $896.43

SKU: G003 612701

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Gibson Dual Split Exhaust is engineered for maximum power, aggressive sound, and standout style. It decreases backpressure, producing more torque and increased horsepower. It features T-304 stainless steel tips for a sleek, high-performance look. Designed for peak output, it maximizes low-end torque and horsepower (1,800–3,000 RPM) and is dyno-proven to deliver 10–15 horsepower and 15–20 lb-ft of torque. The system includes a Gibson Superflow Muffler with a baffled and chambered design, producing a deep, aggressive exhaust note while minimizing cabin drone. Crafted from mandrel-bent stainless steel tubing, it's built for durability and features hassle-free bolt-on installation with factory hangers and clamps, requiring no welding. It exits straight out the back and is compatible with most factory bumpers. Exhaust sound may be louder under towing conditions. Proudly Made in the USA, backed by a Lifetime Limited Warranty.
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Part #: 612701

For the enthusiast who wants an awesome look and aggressive throaty sound this Dual Split Cat back exhaust is for you. Gibson Exhaust Systems decrease backpressure and produce more torque and increased horsepower. Typical gains average of 15-20 horsepower. Stainless dual Tip exit straight out the back. Works with most bumpers, roll pans and trailer hitches. Exhaust sound is louder under towing conditions. Hassle Free bolt- on installation. No welding required. Backed by a Lifetime Limited Warranty.

Features:

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

Cat-Back Dual Split Exhaust System | Stainless

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandGibson
Part NumberG003 612701

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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