Width: Width refers to how wide the handlebars stretch and how wide the grips are. Make sure the new handlebars are wide enough to accommodate all of your accessories, and choose the width based on the riding position you want to have.
Height: Height refers to the actual height of the handlebars. The height of the handlebars affects your seating position, shoulder position, visibility, and riding feel, so be sure to test the position before purchasing.
Rise: Your motorcycle may have risers, which are the parts that hold the handlebars up. Some handlebars have built-in risers, while others may have separate parts or no risers at all. Take note of where you want your handlebars to sit, and adjust, add, or remove risers as you wish. Be aware that doing so may affect the length of cables and wires you need.
Pullback/Sweep/: Pullback refers to how much the handlebars bend back toward the rider. This may affect how your current setup sits and works on the new handlebars.
Diameter: Diameter refers to the outside diameter of the handlebar. Some mounts may only accept specific diameters, so make sure yours match.
Brake, Clutch, and Throttle Cables and Wires: In the process of switching handlebars, you may also have to consider the location of brackets, as well as the length and location of wires, as well as clutch, brake, and throttle cables. This may mean adding lengths of new cables, shortening existing cables, changing brake wiring, or rerouting cables.
Brake, Clutch, and Throttle Inputs: In the process of switching handlebars, you may also want to switch your brake and clutch levers to lighter, heavier, adjustable, shorter, or longer levers. You may also want to change the throttle grip to something you prefer.