Beginning September 2017, all top mounts are sold with these shoulder nuts included to replace your coilovers standard top nut. Custom made from high strength alloy steel to fit the 3/4" bearings used in my top mounts, these nuts allow for increased thread engagement while allowing for additional room for a spring perch under the top mount. Sold individually for those wanting to upgrade old top mount setups or s spares. Available with M14x1.5, M12x1.5, and M12x1.25 threads.