ARP Miata Main Studs 1990-2005

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These ARP main studs are made from 8740 chromoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, w ith a black oxide finish for corrosion resistance. The kits come complete with hardened washers and high-strength hex nuts. For 1990-2005 Miata. Show more