The ST Brace (TSAB) is designed to reduce torsional stress in Piaggio and Gilera 125/180cc engine blocks. By providing additional support near the rear axle, it reduces the load on the crankcase and minimizes the risk of cracking or deformation.
The brace is made of anodized aluminum and follows the contour of the rear wheel, leaving plenty of room for exhaust pipes and expansion joints.
The ST version is designed for use with ST exhausts, but can also be used with other exhaust systems.