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The only way to make your car turn, stop or go is if the entire tirepatch is hitting the surface at hand. With OEM soft swaybars, the cars leans dramitically when cornering causing the tires contact patch to be less than optimal. We see the need for a farlarger and stiffer sway bar to control this "leaning" to keep the tires contact patch planted on the road! All EVO owners will notice the increased snap fromour new 25mm (1”) sway bar. We’ve incorporated a variety ofadjustment holes to help you custom tailor your suspension to yourspecific needs and driving habits. Made from solid steel and heavilypowdercoated to prevent the rigors of salty roads that wreck havoc withless worthy products. Included are custom sprial cut polyurethane bushings toprevent tedious re-greasing and all necessary hardware for a clean, andpainless installation. Sway bar Settings All PERRIN swaybars comes with multiple endlink connections. Thisallows the end user to customize the stiffness of the bar. These 3 settings can provide 5actual different setting with crossing the endlink connections. Below are some basic calculations of % change from OEM toPERRIN 25mm bars. The crossed endlink calculations are notmentioned below, but can be figured as they will fall in between therates mentioned. The sway bar settings can allow for significantchanges in sway bar functionality, with out having to go buy anothersize bar. EVO X SWAYBAR % INCREASE BASE ON DIAMETER ALONE Stock Diameter PERRIN Sway bar % Increase 23mm 25mm 148% OEM 23mm BAR STOCK SETTING EFFECTIVE RATE 494 LBS/IN PERRIN 25mm BAR SETTING #1 BAR SETTING #2 BAR SETTING #3 EFFECTIVE RATE 625 LBS/IN 754 LBS/IN 919 LBS/IN RATE INCREASE OVER STOCK 127% 153% 186%