This is an optional Mugen 2.5mm Rear Anti-Roll Bar, and is intended for use with the Mugen MTX5 touring car. This bar is softer than the stock 2.4mm roll bar.
Effects of Rear Roll Bar Adjustment
Stiffness Characteristic
Softer
Increased Rear Chassis Roll
Increased Rear Traction
Decreased Front Traction
Decreases On Power Steering (May Cause Understeer)
Stiffer
Decreased Rear Chassis Roll
Decreased Rear Traction
Increased On Power Steering (May Cause Oversteer)
Quicker Steering Response in High Speed Chicanes