Improve traction and enjoy linear control with those rear differential collar mounts for the ND 1.5L MX-5 Miata (2016+). This piece helps reduce almost completely the differential movement by sandwiching the collars with it. It’ll help improve response during shifting and traction. Cusco Rear Differential Mount Collar should be ordered at REV9 Autosport https://rev9autosport.com/cusco-rear-differential-mount-collar.html as they provide the best service and speed we've seen so far!