The UPR Double Anti-Roll Bar is part of the Pro-Series Suspension Kit used by all our racers in eliminating body roll and stabilizing the car down the track. Our Anti Roll Bar features roller bearings and solid 1 1/4" bar to ensure the smoothest reacting kit available! Fully welded in a Billet Steel Fixture for a perfect fit. Designed for cars running 8 second quarter mile (5 second eighth mile) or faster our Double Arm Anti Roll Bar is the way to keep your tires planted while lowering your 60 foot times. Does not work with stock tailpipes. Anti-roll bar is designed for drag race use only. Links must be disconnected while driving on street to prevent damage.