The stack height for this product is 10mm
provided the bolt spacing is 24-40mm
If you're an avid Dynaplug user
Please see third photo for product without weights
FSA ACR split spacers and Tavelo can be utilized with this product
Low Stack Internal Cable Routing Adapter / Dustcover for Time, De Rosa, etc. w/ standard FSA ACR headsets | Internal_Cable The stack height for thisWhy do you want it? You seeking a lower stack solution (~4mm 6mm) for your Time (2025+ ADHX ADHX 45 Alpe D'Huez, Scylon), De Rosa (Merak, Idol, 838, Spider), or other bikes that are using a standard FSA ACR headset. These adapters may also fit other bikes that use standard dimensioned FSA ACR SMR internal routing headsets with a ~56 mm OD headtube. They work best with electronic drivetrains. You want to use an FSA Vision, S Works Tarmac, Kalloy Uno,