SuperPro 2010 Mazda 3 Mazdaspeed Front 27mm 2-Position Adjustable Sway Bar KitThe Ultimate Handling Package! Fitting larger sway bars has two main effects on: Vehicle balance in terms of understeer and oversteer Increased roll resistance Both these effects provide increased tire contact and grip for a vehicle. Add in the SuperPro Adjustable sway bar links to: Eliminate sway bar link flex Adjust in neutral sway bar positioning Maximize all positions on the adjustable Sway Bars All this will give the vehicle balanced and upgraded