All of this can be attributed to the increase in structural rigidity of the vehicle through the use of Ultra Racing chassis reinforcement bars

Manufacturer Code RS0708BMWE92

With upgraded parts

Vivid strut tower bars

Hardrace Boccole KUNCKLE Posteriore PILLOWBALL 2 Pezzi - Subaru IMPREZA GE-GR GP/GJ VA FORESTER SH SJ LEGACY BM BR BRZ Toyota GT86 SKU:6867 All of this can beDescription Hardrace IMPREZA & LEGACY BM BR REAR KUNCKLE BUSHING PILLOWBALL 2PC HARDRACE: 6867 Pillow Ball Equipped. 2 PCS SET Connect to Rear Trailing Arm Pillow ball bushing provides excellent driver feedback, precise control and solid suspension feel. Inner bushing is made from high density plastic tube and metal alloy. High durability and reliability. Outer bushing is fitted with TPV material anti dust boot, 100% resistant from dust, water and