The stock eccentric bolts provided by BMW for small toe adjustments tend to slip under high cornering loads, causing changes to the rear alignment. Our SPL Parts Eccentric Lockout (EL) kit eliminate the stock eccentric bolts to keep your rear alignment where you set it. You must have adjustable control arms in order to adjust toe after eliminating the stock eccentric bolts. Our lockout plates are CNC machined from 6061-T6 Aluminum and supplied with CAD plated grade 10.9 hardware for absolutely zero-slip. One kit includes washers and bolts for both toe arms. Sold as complete kit for one car. Made in the USA. Application List: 2014+ F80 M3 2014+ F82 and F83 M4 2016+ F87 M2