Megan Racing Toyota Sienna 11-20 FWD ONLY Add-on Rear Sway Bar - MRS-TY-1390Sway bars help control lateral vehicle dynamics by transferring the opposing suspension forces between inside and outside wheels during cornering. Sway bars not only decrease overall body roll but also increases vehicle response and balance. Experiencing understeer? Increase (or add) the sway bar rate in the back! Our sway bar kit for the Toyota Sienna will actually add onto the rear beam axle of the vehicle to aid in reducing body roll and increasing