Made for 4mm Shafting
This hub allows you to mount components to a 4mm diameter shaft.
Part of a Large Ecosystem of Parts
The goBILDA® ecosystem has many parts that bolt directly to this hub. That includes wheels, gears, sprockets, track sprockets, timing pulleys, round belt pulleys, winch pulleys, control arms, and more!
High-Speed Design - Completely Balanced
The innovative Sonic Hub design is perfectly balanced. It will not introduce vibrations into your build, even in high-speed applications.
Will Not Get Stuck or Marr Shaft
Our patented Sonic Hub design holds incredibly tight to the shaft without damaging it. When it is time to disassemble, it readily releases its grip on the shaft.
This hub is machined for high-precision fitment.
Will Not Corrode or Rust
The body of this hub is aluminum, and the pinch bolts are zinc-plated steel.
Lightweight & Strong
Aluminum has an excellent strength-to-weight ratio, allowing this hub to be both light and strong.