The Ineos Grenadier is delivered from factory with approximately 0 to 1 degree of positive caster. In comparison, a 79 series Landcruiser typically runs between 3 and 4.5 degrees of positive caster as standard. This is why many drivers find the INEOS steering twitchy in factory form.

With a lift installed, the factory pinion angle quickly becomes a limiting factor. As the front differential rotates downward, it increases the angle at the driveshaft-to-pinion connection. Adding positive caster makes this even more aggressive, which can lead to premature wear of the front CV joint.

By pairing our adjustable control arms with a rotated front differential solution, both caster and driveline angles are corrected together. This provides a usable range of 3–7 degrees of positive caster, supporting suspension lifts up to 3 inches.

Correct caster improves stability and control, especially on rough roads. It also becomes critical when towing, as tow ball weight can unload the front suspension and reduce caster further, resulting in a twitchy, unpredictable feel at highway speeds.