Fits a 25.4mm threaded steerer (1-1/8" threaded) and accepts a standard 28.6mm threadless stem (1-1/8" threadless). This adapter suits bikes with athreaded headset and threaded fork steerer where you want to fit athreadless stem.
System Ex Quill Handlebar Stem Adapter with Shim 22.2/25.4mm Quill to 28.6 Stem
Quill to A-Head Stem Adaptor | 1" to 1-1/8" | Alloy
Pz Racing Quill to Ahead Bike Handlebar Stem Adapter - 22.2mm to 28.6mm
Racing Quill to Ahead Bike Handlebar Stem Adapter - 22.2mm/25.4mm to 28.6mm
28.6mm to 22.2mm Quill to Ahead Bike Handlebar Accessory Stem Adapter Extender
Deda Spada Road Bike Quill to Ahead Handlebar Stem Adapter 22.2mm to 25.4mm
