



Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade Kit
Marsoni
M251S
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.
Quick Dispatch:
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
Order Tracking:
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.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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★★★★★ 5
Great product.
Perfect fitment, hasn't come loose since installation. Fully adjustable and out of view of prying eyes.
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Reviewed in the United States on March 31, 2026
★★★★★ 5
Perfect fit attachment!
This product is built very strong and fits perfectly into the small cubby in the lower middle dash of my 2018 4Runner. It holds my iphone tightly but is easy to remove. 100% satisfied with this purchase.
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Reviewed in the United States on February 6, 2026
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Works great!! Well built and work’s awesome!
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Reviewed in the United States on January 31, 2026
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Reviewed in the United States on November 1, 2025
★★★★★ 3
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