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Ships within 48 hours · Estimated delivery Jul 21 - Jul 26
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Gibson 05-06 Chevrolet Avalanche 2500 LS 8.1L 1-3/4in 16 Gauge Performance Header - StainlessEvery Gibson Performance Header is Dyno tuned and engineered to deliver more usable horsepower and torque at low and mid range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off road. 50 State Street legal. Meets EPA and CARB requirements. Will not
Every Gibson Performance Header is Dyno-tuned and engineered to deliver more usable horsepower and torque at low and mid-range RPM highway speeds. Improves engines ability to breathe and cooler operating engine temperature. Designed as a direct replacement for the factory manifolds, using the stock crossover pipe. They are well suited for lowered and raised vehicles, street and off-road. 50 State Street legal. Meets EPA and CARB requirements. Will not affect the factory warranty. No welding required. Uses OEM style connections. 3/8 in. Heavy Duty Laser Cut Port Flanges- No Warping or Leaking. Premium Gaskets and Hardware included. Backed by a Lifetime Limited Warranty.This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004 | Chevrolet | Avalanche 2500 | Base |
| 2005-2006 | Chevrolet | Avalanche 2500 | LS |
| 2005-2006 | Chevrolet | Avalanche 2500 | LT |
| 2004-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2004-2005 | Chevrolet | Silverado 2500 HD | LS |
| 2004-2005 | Chevrolet | Silverado 2500 HD | LT |
| 2004-2005 | Chevrolet | Silverado 2500 HD | WT |
| 2004-2005 | Chevrolet | Silverado 3500 | Base |
| 2004-2005 | Chevrolet | Silverado 3500 | LS |
| 2004-2005 | Chevrolet | Silverado 3500 | LT |
| 2004 | Chevrolet | Silverado 3500 | WT |
| 2004-2005 | Chevrolet | Suburban 2500 | LS |
| 2004-2005 | Chevrolet | Suburban 2500 | LT |
| 2004-2005 | GMC | Sierra 2500 HD | Base |
| 2004-2005 | GMC | Sierra 2500 HD | SLE |
| 2004-2005 | GMC | Sierra 2500 HD | SLT |
| 2004-2005 | GMC | Sierra 2500 HD | WT |
| 2004-2005 | GMC | Sierra 3500 | Base |
| 2004-2005 | GMC | Sierra 3500 | SLE |
| 2004-2005 | GMC | Sierra 3500 | SLT |
| 2004-2005 | GMC | Sierra 3500 | WT |
| 2004-2005 | GMC | Yukon XL 2500 | SLE |
| 2004-2005 | GMC | Yukon XL 2500 | SLT |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Great spring or summer fit
This came a little bigger than anticipated, but other than that, this is a great quality set. It's a little lighter, which is great for spring or summer. The color is just as pictured and I'm impressed with the altogether fit.
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Reviewed in the United States on May 7, 2026
★★★★★ 1
Bad quality
Poor quality no liners
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Excellent 5-Piece Suit for Graduation; Great Fit & Generous Pant Length
Color: Navy, Size: 16, Color: Navy, Size: 16
Sizing Profile & Custom Hemming:
I took a bit of a gamble ordering this, as my son is just transitioning out of a size 16 and into a size 18. I ordered the 18, and everything fit him absolutely perfectly! A great detail for parents to be aware of is that the pants run generously long. This is fantastic if you have a taller child, and because it is a proper suit, it gives you the extra fabric needed to hem the bottoms for that exact, custom-tailored fit.
The Tie Options (Hardware Details):
This 5-piece set comes with both a bowtie and a standard faux necktie. The hardware on these is distinctly different, which is a helpful detail for buyers: the bowtie is a true clip-on style, while the standard necktie utilizes an elastic/rubber band that stretches around the shirt collar (it is not a clip-on). Both options look incredibly sharp and work very well depending on the look you want.
Comfort & Breathability:
My son wore this entire outfit for his graduation ceremony, and the material performed beautifully. Despite wearing a full suit, he did not overheat at all. The fabric breathes surprisingly well for formal wear, keeping him completely comfortable.
Final Verdict:
Overall, this is a wonderful outfit with absolutely zero complaints from either of us. It fits great, offers versatile neckwear options, and is comfortable enough for long, formal events. 5 out of 5 stars!
Pros:
• Perfect Transition Fit: The size 18 fits exactly as expected for a growing teen.
• Generous Pant Length: Provides plenty of extra fabric to properly hem for taller kids.
• Breathable Fabric: Kept my son cool and comfortable throughout his entire graduation ceremony.
• Versatile Accessories: Includes both a clip-on bowtie and an elastic-band necktie.
Cons:
• None; it is a fantastic, highly functional formal set.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Sharp Looking Suit That Fits Well and Doesn’t Feel Overly Formal
Color: Light Grey, Size: 10
I ordered this set for a more formal occasion, and it ended up being a really nice balance between looking dressed up and still being comfortable.
The first thing that stood out is how good it looks overall. The style is clean and modern without feeling stiff or overly formal. It gives that polished look you want for events, but it doesn’t feel like a traditional heavy suit.
The fabric is lighter than I expected, which is actually a plus. It makes it much more comfortable to wear, especially for kids who don’t want to be stuck in something hot or restrictive. It still looks structured, but it’s easier to move around in.
The fit was solid right out of the package. The jacket lays nicely and doesn’t bunch or pull in awkward spots, and the pants fit well without needing much adjustment. It looks tailored without actually being tailored, which is ideal.
The full set is a nice bonus. Having everything coordinated, including the shirt and accessories, makes it easy to get a complete look without having to piece things together separately.
Details are well done. The buttons, stitching, and overall construction feel decent for the price point. It doesn’t come across as cheap, which can sometimes be the case with kids’ suits.
It’s also held up well so far. No issues after wearing, and it still looks good without wrinkles taking over right away.
If I had one small note, it’s that you may still want to double check sizing depending on your child’s build, especially for length in the pants or sleeves.
Overall, this is a great option for formal events. It looks sharp, fits well, and is comfortable enough that it won’t be a battle to get them to wear it. Definitely a solid value for a full set.
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Reviewed in the United States on April 13, 2026
★★★★★ 4
Overall, a really solid choice
Color: Light Blue, Size: 6
This suit is a great option for a summer wedding or any formal event! The linen fabric keeps it lightweight and comfortable, which is perfect for kids, and the overall look is really sharp and stylish. The double-breasted jacket adds a nice elevated touch, and the full 5-piece set makes it easy to have a complete outfit without extra shopping.
Everything fit well and looked great for the occasion. My only small complaint is the tie, it’s fine, but I do wish it was a bit nicer to match the quality of the rest of the suit.
Overall, a really solid choice that looks adorable dressed up, with just a minor detail that could be improved.
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Reviewed in the United States on April 23, 2026
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