Steering-Pull Correction Kit - adds +0.5deg caster, Not all roads are flat, believe it or not sometimes the road can cause the car to pull either left or right. This Whiteline kit is supplied with a passenger side offset bushing to increase caster and a drivers side standard bushing to maintain OEM caster. This will allow the wheel alignment geometry to be adjusted accordingly to rectify the pull in the car by staggering the offset of the caster. This is a non tyre wearing geometry change that has a substantial effect on a vehicles ability to track straight., Limited Lifetime Warranty