These NASA and SCCA Spec Miata compliant upper control arm bushings are made from carbon fiber reinforced wear grade Torlon 4435. Bearing additives in the material make these bushings require no grease for a no-maintenance design. Prices are per each control arm, installed and ready to bolt on to your car.
The align-press-ream-pin process:
We install these bushings using our in-house jig and press which keeps the bushings aligned with one another, and oriented properly to achieve maximum camber. Offset holes become egg-shaped after being pressed in to the arm-most offset control arm bushings on the market compensate for this by having oversized holes for the inner sleeve, or shipping bushings with instructions to open up the hole after installation. For the best inner sleeve fit, we ream the hole after the press fit for a more precise inner-sleeve fit. We also install a solid steel 1/4″ anti-rotation dowel pin to prevent unwanted bushing rotation and lateral movement in the arm.