Rear Shock Spring Tuning Set (8)Team Losi Rear Shock Spring Tuning Set (8 This is an optional Losi Rear Shock Spring Tuning Set, and is intended for use with the Losi TEN SCTE. These springs are stiffer than the springs that were available previously, and feature progressive dampening characteristics that helps to resist bottoming out. This package includes four sets of rear shock springs, providing an increased level of tuning options for various track conditions. Rear Set