Sway-A-Way 2.0” RaceRunner hydraulic bump stops help to eliminate suspension damage due to bottoming out. RaceRunner Bump Stops come standard in 2”, 4” & 6” travel, with shorter travel options upon request. RaceRunner Bump Stops incorporate a tough nylon end piece to soften the blow when contacted by the suspension and are adjustable internally (valving) and externally (nitrogen pressure) and come standard with smooth Nickel plated cylinders. Sway-A-Way bumpstops have a 1 3/8" Shaft.