Whiteline’s anti-lift kit is designed to reduce the amount of anti-dive and pro-lift in the front suspension geometry. The GT-R has a lot of anti-dive in the front geometry, and we feel that this can contribute to understeer on turn in, particularly when trail braking into a corner. The anti-dive causes a binding moment in the front suspension when it is subject to brake torque loading, which increases the front wheel rate leading to understeer.
This geometry also causes the front to lift when it is subjected to the engine’s torque. This can upset the geometry of the car and weight transfer on corner exit and on drag launches. We prefer to control the car’s attitude with shock adjustments and the spring rate. This will have a more linear response to the driver’s inputs, as well as avoiding any shock to the tires’ contact patches.
Also pictured on the right is Whiteline’s upper control arm kit. We used the SPL Parts upper arm, so we ended up not using it, but it is worth mentioning. The Whiteline upper arm kit allows adjustment of camber and caster using eccentric bushings. Depending on how they are adjusted, the can also adjust roll center and anti-dive and pro-lift to a degree.
The Whiteline kit also adds a half degree of positive caster. This is a big help on the early CBA GT-R’s that had less caster in the front end geometry.