Material: Aluminum alloy Motorcycle Mirror Stem Extender Extension Kit Designed for motorcycles that often carry passengers. The extension bar broadens the rear view to better monitor traffic behind during twoup riding. Wide field of vision focuses on enhancing observation for both rider and passenger when needed. Motorcycle Rearview Mirror Adapter Kit Riser Mount Extender Judge in advance: When the vehicle behind is close, the extension allows the rear view mirror to capture its image earlier, increasing your reaction time. The mounting angle can be adjusted according to the rider's height, sitting position, and other needs, enabling a tailored rear view. Key benefits Improves rear visibility without replacing mirrors Durable aluminum alloy construction Adjustable angle for comfort and safety Use scenarios Twoup riding on highways or touring trips: extended field of view helps you monitor vehicles behind while carrying a passenger. Dense traffic or tailgating situations: earlier detection of approaching vehicles gives you more time to respond. Shared rider setups: adjust the mirror angle for different riders or seating positions to maintain visibility. This kit combines the Motorcycle Mirror Stem Extender Extension Kit and the Motorcycle Rearview Mirror Adapter Kit Riser Mount Extender to provide extended reach and adjustable mounting for improved rear visibility and safety.