The Columbus Trittico Tuning Sleeve is a proprietary -5° angled spacer designed to enhance the performance and fit of your bicycle cockpit and stem. Engineered to work seamlessly with standard 1-1/8” spacers, this tuning sleeve allows precise stem angle adjustment, improving rider posture, handling, and aerodynamics. An upgrade over the standard Trittico sleeve, this component enables a more aggressive riding position, making it ideal for performance-focused cyclists aiming for optimal body alignment and control.