5 mm is each limiter thickness. On our other listing we have 3.5mm thick limiters option in offer.

These limiters, inspired by the BMW E36 M3 setup, let you push your steering lock to the max without rubbing. They’re perfect for preventing your racecar from munching on brake ducts or letting your drift car lay down full lock with zero stress! The rack shaft stops are designed to handle the power steering overload on the tie-rod when you reach the limit. This means no more stripping tie-rods or bending parts, and it helps reduce failures when you’re hitting bumps at full lock.

Designed for all E36 Z3 and E46 steering racks.