Tractor-trailer connection systems continue to evolve from coiled-line components to straight-line systems which offer many performance advantages. Until now, the complimentary components used to suspend and control connection lines have lagged in development and limited the overall application performance of these evolved systems. An industry-first from Tramec Sloan, the X31HT “High Tension” tender spring design provides optimized suspension and control performance for straight-line tractor-trailer connection systems.