We’ve been offering our Eccentric Locks for NA/NB Miatas for a long time now. They’ve become a staple in the Miata community from the casually-spirited drivers to the track warriors, keeping those precious wheel alignments locked-in. The tinkerers out there love the ability they give to make incremental adjustments to get the absolute maximum from their setup.
Now NC Miata owners can enjoy the same security with eccentric locks unique to their chassis, which is shared with the RX-8, so identical fitment there too! The NC/RX-8 chassis uses two different sized eccentric bolts for alignment adjustment, so we’re offering large and small versions, accordingly. (There is actually a 3rd, larger adjustment bolt in front at the back of each lower control arm for caster, but it’s not a threat to slip like the other 6 eccentric bolts)
You may purchase the large or small locks individually or as a complete set (4 large, 2 small) to fully equip a chassis (and get a discount!)  The large locks are used at the front of the front lower control arm, and the rear of the rear lower control arm. The small locks are used at the front of the rear lower control arm.
