Performance gains from this upgrade were subtle by themselves, but combining the THG underdrive kit with the Axial Overdrive kit yields 22.9% total overdrive and really made a noticeable difference in crawling performance for me.

So far very impressed with utb18 gears. I’ve only ran a handful of packs on the thus far but they are working flawlessly.

They work well and were easy to install.

Awesome quality and craftsmanship.

Stout build and perfect fit, grease them up and go! No surprises here.