The optional Exotek Tenacity HD Steering Set with Bearings is intended for use with the 1/10 Losi TENACITY series of trucks and buggies. These parts are machined out of quality 7075 aluminum alloy and designed for precision with four additional bearings to connect the drag links instead of bushings, the better to eliminate friction wear and stop. This set includes crush sleeves that go between the bearings which help prolong the bearing life and maintains a precise fit and operation of the rack.