Transmission derailleurs simply require ~30mm in diameter flat on both sides. That’s pretty standard on carbon bikes. And alloy bikes with big machined dropouts can also easily make that work.

In 2024 the opportunity arose to partner with Gates Carbon Drive to make the dream a reality. Atherton’s Additive Manufacturing (AM) technology provides the business with a clear means to test, assess ...

All made-in-Italy carbon 3T Italia bikes are now UDH-ready. You may even already have a RaceMax gravel bike with UDH!