Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade Kit

Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade Kit

Marsoni

M251S

$199.95

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

Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade KitFor Model 730 train horn only. Increase air flow and push the Model 730 Demon to unheard of decibel levels. The Ultra BlastMaster provides everything you need to add an additional two VX6003 solenoid valves to your Model 730 Demon . Adding two more solenoids allows each trumpet to have a dedicated air source for dramatically increased flow and a train horn that will push your Demon over the edge. Prepare your eardrums to be crushed.

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Your Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade Kit orders ship within 1-2 business days.

Delivery Options:

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

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You'll receive a tracking link by email once your Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade Kit ships.

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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This works well for what I needed – a simple background for my kids’ online school. It’s lightweight and very easy to put together, and it stands up fine without needing to mount anything. The color is listed as black, but it’s more of a dark gray in person. Not a huge deal, just something to be aware of. It’s not super heavy duty, but it does the job for privacy and as a video backdrop. Overall, a good, portable divider that’s quick to set up and works well for light use.

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Reviewed in the United States on February 21, 2026

Verified Purchase

Robert A. Bertsche

Carnegie, US

★★★★★ 5

Essay to assemble

Color: Grey

Very nice. Did the job the way I wanted.

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Reviewed in the United States on April 28, 2026

Verified Purchase