Profile Design Threadless Size Converter Bicycle Stems The Profile Design Threadless Conversion kit is the perfect solution for modernizing your bicycle cockpit. This adapter is specifically designed for installing modern threadless stems onto a traditional threaded fork system. By using this high-quality quill adapter, riders can enjoy a wider selection of contemporary handlebars and stems, improving both the aesthetics and the ergonomics of their vintage or classic bike. Seamless Threadless Stem Integration Designed to convert a 1-1/8 inch threaded fork to accept a 1-1/8 inch threadless stem. Allows for the use of modern 28.6mm threadless stems on older frames. Provides a secure and stable interface between the fork and the handlebar assembly. Ideal for cyclists looking to upgrade their components without replacing the entire fork. Adjustable Height and Positioning Enables an approximate 25mm rise increase when used with additional spacers. Customizable height allows for a more comfortable and upright riding position. Provides a 41mm (1-5/8 inch) clamp area length for a strong connection with the stem. Offers flexibility in fine-tuning the reach and stack of your bicycle. Durable Construction and Classic Finish Features a premium polished silver finish to complement both classic and modern frames. Constructed from high-strength materials to ensure long-term reliability and safety. Precision-engineered dimensions ensure a tight fit within the threaded steerer tube. Sleek design integrates smoothly with the existing lines of your bike. Technical Specifications Quill Insertion Diameter: 25.4mm for 1-1/8 inch threaded forks. Steerer Clamp Outer Diameter: 28.6mm for 1-1/8 inch threadless stems. Clamp Area Length: 41mm (1-5/8 inches). Finish: Polished Silver. Compatibility: Threadless stems and threaded fork steerers.
