Coming soon

Build a Gearbox

We’re putting together a dead-simple way to spec a custom marine gearbox online. Tell us what the boat needs, we’ll confirm ratios, shafts and seals, and come back with a quote that makes sense.

What you’ll be able to do

  • Select engine, torque and desired ratio
  • Choose output shaft, flange and mount pattern
  • Add clutch type, oil cooler and seal options
  • Attach photos and measurements for verification
AU SupportShepparton-based
Fast QuotesUsually within 1–2 days
WarrantyParts & build

Prefer a call? Ring (03) 5831 6755 and ask for gearbox builds.

While we finish this page

If you’re ready to move now, send us:

  • Engine model and peak torque
  • Desired ratio and rotation
  • Shaft OD, keyway, flange pattern
  • Photos of current setup

Email everything to sales@icstrailers.net.au and we’ll confirm specs before quoting.