Cruiser Motorcycle Air Intakes are a key part of any motorcycle engine. They take in air as your driving. Changing or modifying your Cruiser Motorcycle Air Intake can help reduce resistance, improve airflow and boost engine performance. Modifying your air intake is also known to be cost effective compared to other performance upgrades you can make. Some of the most popular brands include the following: Arlen Ness, Cobra, Kuryakn, Biker's Choice and more intakes come in various shapes and sizes. They're a great way to customize the look and feel of your bike.