GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)

GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)

Marsoni

M251S

$40.41

Get it in 3 business days with 1 day shipping. Friday, May 29

GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid)The 5701 can be used in place of the standard trumpet on GFB valves (Part numbers T9003 & T9503), and will make a whistling sound. However, it is necessary to run the valve so that all (or most) of the air vents through the trumpet ? Respons valves will typically not generate the velocity required to whistle when set to 50 50 venting.

Easy Shipping

Quick Dispatch:

Your GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid) orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid) ships.

Need Help?
Questions about GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid), sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for GFB Whistling Trumpet (only for Stealth FX and WRX Hybrid) in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

If you need more fiber in your diet, you need this. The price is right, it works very well and keeps me regular. I use this instead of the gummies or capsules. That's because you MUST put in in fluid, and hydration is SO important when using a psyllium product as it causes water to be absorbed very quickly once it is ingested, and you don't want to dehydrate! Mixes very well in water and has little to no taste whatsoever. Stay regular, stay hydrated and stay well.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 14, 2026

Verified Purchase

Robert

Massapequa, US

★★★★★ 4

Works well, but is now too expensive...

Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)

The "No added sweeteners" has been my go-to version of Metamucil, but I'm giving it 4 stars and moving on to another brand as the price is over $35 which is too much imo...

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 15, 2025

Verified Purchase

S. E. Seater

Pawtucket, US

★★★★★ 5

I like the mildly tart taste of this unflavored, unsweetened drink made up with water.

Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)

I like the mildly tart taste of this unflavored, unsweetened drink made up with water. The texture doesn't bother me, with stirring right from the beginning of adding the water, there is no clumping. After 10 days there is no effect on my bowels which were regular previously anyway. My doctor wanted me to use this although I already have a high fiber diet.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 25, 2026

Verified Purchase

Charlottesville, US

★★★★★ 1

Definitely Not Unflavored. This is Tart / Sour, Which Limits the Options to Certain Juices

Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)

I was expecting an unflavored fiber powder. However, expect a sour/tart taste. This means you can't add it to tea or coffee. I don't think it is appropriate to say that it is "unflavored" as I've had psyllium husk from other vendors that are truly "unflavored" (i.e. no citric acid). Dextrin (another fiber source) is also unflavored. But this Metamucil is tart (like sucking a lime) and can only be added to tart juices like orange juice or lemonade.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 19, 2026