SKU: 6775654215

Flow Fx Direct Fit Muffler Fits 20-26 GM 2500Hd/3500Hd 6.6L Gas Engine Ffx Direct Fit Muffler Exhaust System, 409 Stainless Steel Flowmaster

$260.96 $289.96
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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

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Description

Flow Fx Direct Fit Muffler Fits 20-26 GM 2500Hd/3500Hd 6.6L Gas Engine Ffx Direct Fit Muffler Exhaust System, 409 Stainless Steel FlowmasterFlowmaster's FlowFX Direct Fit Muffler exhaust system for the 2020 2026 GM 2500HD and 3500HD trucks with the 6. 6L gas engines gives you a great value packed way to help you customize your GM truck to your personality. This performance muffler system fits both 2 4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble free service and performance. Features include a 3. 50 inch inlet pipe leading into a 409 stainless steel

Flowmaster's FlowFX Direct-Fit Muffler exhaust system for the 2020-2026 GM 2500HD and 3500HD trucks with the 6.6L gas engines gives you a great value packed way to help you customize your GM truck to your personality. This performance muffler system fits both 2/4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble-free service and performance.

Features include a 3.50-inch inlet pipe leading into a 409 stainless steel Flow FX series straight-through muffler for great sound and maximum performance and no drone. The muffler then connects to the factory tailpipe for a simple and effective performance upgrade. Max dyno gains of 7 hp and 5 lb-ft at the rear wheels. This results in better acceleration and towing performance. The system uses all the factory hanger locations and connections for an easy installation that you can do at home. Kits include installation instructions and all necessary hardware. Backed by Flowmaster's Lifetime Limited Warranty.

  • 3.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • A tuned Flow FX style muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow with no drone
  • Max increases of up to 7 hp and 5 lb-ft over the stock exhaust at the wheels
  • Tuned performance muffler eliminates interior drone
  • Maintains factory warranty
  • Lifetime Limited Warranty
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 6775654215

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4.7 ★★★★★
Based on 19 reviews
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M
Verified Purchase
M Spring
Boise, US
★★★★★ 4
⭐️⭐️⭐️⭐️ Adjustable and Better Than Most I’ve Tried
Size: Standard (Pack of 1)
I’m a really tough pillow critic and have a hard time finding one I actually like. With that said, this pillow was better than a lot of others I’ve tried—mainly because you can remove some of the latex shavings to adjust the firmness. I ended up taking out about 20% (do it over a big trash can because the shavings can get messy!). When it arrived it was too firm for me, which is why I had to take some filling out. Even after adjusting it, it’s still not my absolute favorite pillow, but I do use it every night as a “hug” pillow and it works great for that. I think people who aren’t as picky as I am will probably really enjoy it, especially since you can customize the amount of latex to get it just right. I’d give it 3.5 stars, but rounded up to 4.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2025
J
Verified Purchase
Joyce Payeur
San Leandro, US
★★★★★ 5
Good Value Latex Pillow
Size: Standard (Pack of 1)
Most latex are horribly expensive and smell strongly. This pillow good for a side sleeper, little odor, med firm.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2024
S
Verified Purchase
S. Bonni
Houston, US
★★★★★ 5
Great size for vintage pillowcases
Size: Standard (Pack of 1)
Gives good support. And very pleased w/ comfort. Slightly larger than old replacement, but not the over-sized "standard" of 25".
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2022
L
Verified Purchase
Lulu in TX
Natrona Heights, US
★★★★★ 5
Cool-temperature outer cover
Set name: UltraCool Pillow 2-Pack, King - Soft/Medium, Item length width: 40.0 Inches
The pillows (set of2) are easily fluffed and adjusted to personal desire. The outer cover is cool to the touch. I do not feel "cooler" with the pillow, but it does not get hot like some. I'm a side sleeper and sleep comfortably with the Slumber Cloud. I would buy these again. Con: pillow cover is slick, so pillow cases slide off.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026
H
Verified Purchase
Happy Shopper
Waukegan, US
★★★★★ 1
not cooling for post menopause
Set name: UltraCool Pillow, Standard - Medium/Firm Firmness, Item length width: 30.0 Inches
As a post menopausal person I did not find this cooling at all. The material is memory foam which holds heat but more importantly my head sinks in so that half of it is always surrounded by the pillow, trapping heat. It IS a supportive, soft and comfy pillow. For cooling though, I found it better to buy a firmer, thinner pillow which keeps my head from sinking into it, allowing heat to dissipate.
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Reviewed in the United States on August 25, 2025

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