Bike grips are a critical component of the bike. The grips provide an interface between you and the motorcycle for braking, shifting gears, turning remotely (such as using them to control brakes or turn signal lights), holding onto while riding over rough terrain, etc. Bike grips usually survive about three years before they start showing signs of wear from use, such as tearing or cracking material around rivets where screws hold in place on one end. With heavy use, though this time frame may decrease by half, which means after just two years, riders might notice tearing.