The Tusk Aluminum Throttle Tube is a great OEM replacement throttle tube that is much stronger than stock motorcycle throttle tubes. Constructed of a 6061 T6 aluminum for maximum durability. The inner diameter of the tube has a polished finish for reduced drag and a smooth operation. The outside of the throttle tube is knurled for optimal grip surface. When looking for parts for your motorcycle, ATV, and UTV think Tusk!