Fifth Wheel Trailer Hitch Pin Box; Rota-Flex ™; King Pin Coupler; 21000 Pound Gross Weight Capacity; Rota-Flex Pin Box; Fits Lippert 1621 Frame Only

Rota-Flex™ is a pivoting head pin box that utilizes a proprietary rubber comPound in a compression application to absorb the transfer of fore to aft motion, otherwise known as “chucking.” This innovative design allows the fifth wheel and king pin plate to remain in a horizontal position while the vehicle and trailer pivot independently of each other. Features & Benefits Pivoting Head Controls Fore To Aft Movement Of The Kingpin To Further Control Chucking Rubberized Torsion Compound In The Pin Box Head Absorbs Motion And Vibration Caused By Road Shock Improves Ride While Protecting Coach Has A Rust Inhibitive Powder Coated Lower Jaw