Towing Equipment› Trailer Wiring and Electronics
Kleinn Air Horns
Kleinn Ultra HK9 730 Horns BlastMaster Valve Upgrade Kit
SKU: K00Y 6890
Beginner — under 30 min
Description
Part #: 6890
For 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.
Ultra BlastMaster 730 Horn Solenoid Valve Upgrade Kit.
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Fitment
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Specifications
| Brand | Kleinn Air Horns |
| Part Number | K00Y 6890 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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