Modern frames with fully internal routing require a compatible headset to make sure the frame integrates with the stem or one-piece bar.
The headset is a vital part in ensuring your frame will fit one of our Enve In-Route Stems or One-Piece bars.
If your frame's stock headset is not 'In-Route' compatible, then you will need a new top cap or headset to make it compatible. Luckily, there are a plethora of options that will ensure there is a route for you to choose from to have your frame outfitted with an ENVE stem or one-piece bar.
First place to check for a compatible top cap would be our own Top Cap adapters.
IN-Route Headset Top Cap Bearing Covers – ENVE Composites USA
There are other top cap manufacturers out there. One popular option is Mag-CAD

If there is no Top cap adapter made for your frame, then you will have to upgrade your frame with an In-Route compatible headset on your frame.
Luckily, Chris King Components and Wolf Tooth Components both make an In-Route compatible headset.
AeroSet™ – Chris King Precision Components
Wolf Tooth Premium IS52 Internal Aero Headset for ENVE IN-Route System – Wolf Tooth Components

We highly suggest reaching out to your frame manufacturer to confirm what size headset your frame needs so that you can order the correct In-Route compatible headset. That way, any of our Stems or one-piece bars will be compatible with your frame.
Our vast network of Authorized Dealers can help make this dream upgrade into a reality; ENVE | DEALER LOCATOR – ENVE Composites USA