Got the underdrive rears to pair with Axial's overdrive fronts. The TGH parts are a tighter fit and so a bit more difficult to get on, but this is probably better in the long run. Liking the performance.

Love the quality and tight fit to axle shafts. Definitely a good part built to last

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.