Description
SPL Parts 03-08 Nissan 350Z / 2009+ Nissan 370Z Rear Knuckle Shock Mount Monoball Bushings is a chassis-specific suspension upgrade engineered for drivers who want more precise geometry control from 03-08 Nissan 350Z / 2009+ Nissan 370Z Rear Knuckle. SPL Parts is a U.S.-based performance-suspension specialist that develops motorsport-oriented chassis hardware for precise alignment, low compliance, and repeatable setup changes.
These knuckle-mounted spherical or low-compliance bushings replace soft rubber interfaces at critical suspension pivots, reducing the amount the upright can deflect relative to the control arms. More accurate pivot control helps preserve commanded camber and toe under load, improving tire contact-patch consistency, braking stability, and response during rapid direction changes.
Why it matters: On this application, the goal is to keep the tire and upright closer to the intended alignment as loads rise, giving the driver a more repeatable platform for braking, turn-in, mid-corner balance, and power application. They are a strong complement to adjustable arms because the alignment settings are less likely to be masked by elastic movement at the knuckle.
For best results, set the final geometry around the vehicle's tire, ride height, and intended street/track use rather than relying on generic factory targets.