Description
SPL Parts 89-05 Mazda Miata (NA/NB) Tie Rod Ends (Bumpsteer Adjustable/Manual Rack Only) is a chassis-specific suspension upgrade engineered for drivers who want more precise geometry control from 89-05 Mazda Miata (NA/NB). SPL Parts engineers performance suspension components in the USA with an emphasis on strength, low friction, precise adjustment, and alignment control for track and high-performance street cars.
This adjustable tie-rod solution is intended to correct steering-link geometry by relocating the outer pivot after ride-height or suspension-geometry changes. Properly setting tie-rod height helps reduce unwanted toe change through bump and rebound, improving steering linearity and stability as the suspension moves. For a lowered or track-prepared chassis, that extra bump-steer control can make turn-in more predictable, reduce mid-corner steering corrections, and help the front tires maintain a more consistent slip angle over uneven pavement and curbing.
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. Final toe and bump-steer settings should be established during a professional alignment with the vehicle at its intended ride height.
This type of hardware is most effective as part of a complete alignment strategy, where camber, caster, toe, ride height, and tire behavior are evaluated together.