There are a few reasons you might want to replace your grips. There’s a wide variety of ergonomic shapes and different color options on the market. They’re easily customizable to add some flair to your bike, or you may be looking to replace them if they get worn from extended use.
The steps seem simple (slide off old grip, slide on new grip), but they’re often quite difficult to work with. Here’s a trick I picked up for replacing particularly stubborn grips.