Dan I.
Posted
Great to honk at other trains passing by!
Items arrived on-time and in good condition. YouTube instructions for assembly were great and my son could not be happier with having a train horn to honk at other trains passing by. :-)

Excellent
13 reviews
HonkUp is a brand operated by Symbiosis One, a U.S.-based e-commerce company specializing in custom-built handheld air horns and related accessories. We source genuine, brand-new tools and components from authorized retailers and trusted suppliers, then carefully modify and assemble products to create unique handheld horn systems designed for enthusiasts, events, sports, automotive use, and recreational applications.Every order is assembled, inspected, and tested before shipment. We focus on product quality, fast order processing, transparent communication, and responsive customer support.HonkUp is an independent company and is not affiliated with, sponsored by, or endorsed by any power tool manufacturer. Any third-party brand names referenced on our website are used solely to identify compatibility or the original platform used in our custom-built products.Symbiosis One is the legal business entity responsible for the management, operation, and customer support of the HonkUp brand. We are committed to maintaining transparent business practices and providing reliable service to customers across the United States.
Symbiosis One (honkup.com) has 13 customer reviews on Consumer Courier, with an average rating of 4.8 out of 5.
13 approved reviews, newest moderated first
Dan I.
Posted
Items arrived on-time and in good condition. YouTube instructions for assembly were great and my son could not be happier with having a train horn to honk at other trains passing by. :-)
Johnny
Posted
Awesome products, great packaging, super fast shipping, and the best customer service in the business! Definitely will buy again! Thanks
William B.
Posted
Easy to order, decently priced and arrived quickly. Quality product, sounds great.
Jack O.
Posted
The product is great and worked very well. The only downside is that the compressor motor will not stay in the housing. It was not in it when I got it. It will not stay in now. So I took some tape and taped it in place but overall does everything. They said it would do and I would buy it again
Scott C.
Posted
Kit was perfect. Exactly as described!!!
dan S.
Posted
No instructions nice kit better packing for shipping box destroyed one end hopefully it works thank u
Response from Symbiosis One· Jul 26, 2026
Thank you very much for taking the time to leave your feedback. We truly appreciate it. You are absolutely right about the instructions. When we first launched these kits, nearly all of our customers came directly from our build videos, where we shared the complete assembly process, tips, and details. Because of that, we relied on those videos as the primary instructions. We also have a detailed step-by-step guide available on our website: https://www.honkup.com/blogs/how-to-build-impact-train-air-horn Along with the written guide, we also provide a full video tutorial on YouTube: https://www.youtube.com/watch?v=wZRX0NW1W3M That said, your feedback is completely valid. We have already improved this part of the experience. Every kit now includes a printed insert with QR codes and links to both the written guide and the YouTube tutorial, making the instructions much easier to find. We also appreciate your comments about the packaging. We'll continue improving our packaging to better protect the contents during shipping. Thank you again for your feedback, and we hope you enjoy your build!
Kevin M.
Posted
Wires are a little small. As I was hooking up one of the wires broke at the solder connection at board. Going to attempt to resolder & Hope it works.
Eloyd L.
Posted
I bought two 5 horn kits, had a problem with one of the triggers, customer service resolving my issue was fantastic. The five horns set up is extremely loud.Especially with a 60v 12ah Dewalt. Install, it's pretty straightforward.I did have to trim a little bit on the dewalt frame to make it work correctly but very minor. Definitely recommend they are a lot of fun.