The TeraFlex Single Rate ST (Street & Trail) Front Sway Bar System is the most advanced manual sway bar disconnect system available. The Easy Engagement Knob allows you to go from street to trail in seconds! A simplified version of our Dual-Rate ST Front Sway Bar System (# 1753725), the Single-Rate ST Front Sway Bar System features a heavy-duty “Streetin torsion bar for superior highway handling. The forged sway bar arms feature several link mounting points to fine tune the torsion rate. Simply twist the knob to disengage the “Streetin sway bar for unrestricted off-road articulation; then simply twist the knob again to re-engage the street sway bar for the highway!