Performance Alignment Kit – round bushing design – adds +0.5deg caster + anti-lift, Whiteline Anti Lift Kits are primarily designed to improve traction and cornering grip under power. Increasing static caster to both front wheels. The special low compliance bushings reduce caster wind-back and maintain tighter tolerances between static and dynamic alignment settings. The additional caster coupled with the firmer bushings serve to dramatically sharpen initial turn-in response – forcing more consistent alignment angles through the corner due to the reduced bush compliance., Limited Lifetime Warranty