Circuit Sports Extended Lower Ball Joint & R Package Tie Rod End Combo Kit
Fits 1990–2005 Mazda Miata NA/NB

Get more camber adjustment and help reduce bump steer on your lowered Miata with this direct-replacement combo kit.

Our extended lower ball joints bolt into the factory mounting points and provide approximately 2 additional degrees of negative camber. Depending on your suspension setup and ride height, the available adjustment range is roughly −0.5° to −4°. The R Package tie rod ends help correct bump steer caused by lowering the car.

This kit is also a great opportunity to replace aging suspension components. Over time, factory dust boots can crack and let dirt into the joints, leading to wear, clunking, vibration, and uneven tire wear.

Built and assembled by an ISO 9001:2000-certified manufacturer, each unit features:

• Forged housings and ball studs for strength and durability.

• High-quality rubber dust boots to help keep contaminants out.

• Silver zinc plating for oxidation and corrosion resistance.

• Tight manufacturing tolerances, with a ball stud joint designed to be 40% stiffer than OE.

• High-grade nuts and cotter pins for straightforward installation.

Installation note: A professional wheel alignment is highly recommended after installation. The inner tie rods may need to be extended a few millimeters on each side to compensate for toe-in, with final adjustment made during alignment.

* (Price includes two extended lower ball joints and two R Package tie rod ends).