![Quill stem measures 1 inch exactly. I'm guessing the fork is a 1 1/8" threaded. What headset do I need? Also does anyone make 1" Threadless adapters? : r/xbiking Quill stem measures 1 inch exactly. I'm guessing the fork is a 1 1/8" threaded. What headset do I need? Also does anyone make 1" Threadless adapters? : r/xbiking](https://preview.redd.it/18gm793sat891.jpg?width=640&crop=smart&auto=webp&s=0021978cd13119271602c26e780dea13103fe7d5)
Quill stem measures 1 inch exactly. I'm guessing the fork is a 1 1/8" threaded. What headset do I need? Also does anyone make 1" Threadless adapters? : r/xbiking
![Do I need to remove the headset cups to convert threaded to threadless fork? - Bicycles Stack Exchange Do I need to remove the headset cups to convert threaded to threadless fork? - Bicycles Stack Exchange](https://i.stack.imgur.com/CMSag.png)
Do I need to remove the headset cups to convert threaded to threadless fork? - Bicycles Stack Exchange
![Campagnolo Headset Seal for 1" Threaded & Threadless Headsets, Not for Hiddenset 8032758968570 | eBay Campagnolo Headset Seal for 1" Threaded & Threadless Headsets, Not for Hiddenset 8032758968570 | eBay](https://i.ebayimg.com/images/g/qjoAAOSwM1Jitlma/s-l1600.jpg)
Campagnolo Headset Seal for 1" Threaded & Threadless Headsets, Not for Hiddenset 8032758968570 | eBay
![Amazon.com : SUNLITE Threaded Headset, MTB, 1-1/8" x 25.4 x 34 x 30mm, Black : Bike Headsets And Accessories : Sports & Outdoors Amazon.com : SUNLITE Threaded Headset, MTB, 1-1/8" x 25.4 x 34 x 30mm, Black : Bike Headsets And Accessories : Sports & Outdoors](https://m.media-amazon.com/images/I/51Qm+k4ZoEL._AC_UF1000,1000_QL80_.jpg)