The stock intake tube from the bed to the airbox is made of very plastic. Material use is just the beginning of the troubles. This tube in stock format is VERY restrictive and has multiple restrictive paths of flow.?ßWe have fixed these flaws with a extremely heavy duty 7mm thick 6Ply silicone tube that is not only stronger but also oversized. We removed all restrictions of airflow & forming imperfections, while enlarging the tube was much as possible without causing clearance issues with the bed or shock. These changes and smoothed transitions provide the?ßabsolute most air flow and intake velocity possible.?ß?ßEach tube includes stainless Silicone Safe T-Bolt clamps.