Supermax Gearbox - Single Speed

After 30+ years of hand cranking trailers both bumper pull but mainly goosenecks we are finally free! Seriously give these a chance, you will not regret the purchase! We have a fleet of trailers for concrete construction, we bought a gear box for each truck and the universal handle bracket. Now the guys can hook and unhook without physical labor and we have another layer of theft protection as the trailers do not have a jack handle on them anymore.

WONDER GEARBOX

works great. i have tried the socket adapter and did not work like was represented so seen the videos for gearbox so i bought it and only thing i had to do was swap the gears around and tried it out and i worked like it was represented. customer service emailed quickly on how to swap the gears around to make it work for my trailer

Supermax Gearbox and warranty are awesome. The Gearbox has been a lifesaver, I’m 73, have a bad back but still do what I can. My Gearbox messed up and after talking to Dan, I returned mine and he sent me a new one. I will definitely recommend their products to anyone. Awesome company with great products.