No excuses racecars use no excuses parts!
These NASA and SCCA Spec Miata compliant upper control arm bushings are made from carbon fiber reinforced, durable ApexPAI. Bearing additives in the material make these bushings require no grease for a no-maintenance design. This is priced per pair of new control arms for NB cars, bolt-on ready.
The align-press-ream process:
We install these bushings using a custom 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 with a reamer after installation. For the best inner sleeve fit, we ream the hole after the press fit for a more precise inner-sleeve fit.
The inner sleeves are engineered to distribute the load from the long-bolt, reducing contact pressure on the subframe. Other design bushing sets out there will dig in to the subframe, causing the long bolt to loosen during use.