Now even more stable and suitable for e-bikes. The ergotec Up & Down Turn 3 adapter is a handlebar height adjustment system for Ahead stems with additional rotating function. Thanks to a quick release and release mechanism, all functions - lifting, lowering, turning - can be performed easily and without tools. During assembly, the head tube does not need to be milled, which has the advantage that the adapter can be removed at any time. Attention: only suitable for steel shaft tubes.