Swift Helper Springs 70mm ID, 2.8 in length 0.8 kg/mm Pair Spec R Springs SPL Parts PRO Solid Aluminum

SPL Parts PRO Solid Aluminum Differential Mounting Bushings (SDB) eliminate the stock mushy rubber bushings on the differential pumpkin when adapting J30

S-Groove Motorsport face type

7 in length 4 kg/mm

Ikeya Formula

Copy of Swift Sport Springs 08-10 SUBARU IMPREZA WRX STI GRB 4F907

Swift Helper Springs 70mm ID, 2.8 in length 0.8 kg/mm Pair Spec R Springs SPL Parts PRO Solid Aluminum70mm ID, 2. 8 in length 0. 8 kg mm Swift Helper Springs are made from a proprietary material. Helper springs allow the spring to stay on mounted on the coilover perch when the shock is under negative or zero load, also known as droop travel. The same springs are used in Super GT, Formula Nippon, F3, F3000, Super Taikyu, IMSA, Pirelli World Challenge, Rally America, VLN, Le Mans Series, Formula Drift, and many other professional racing avenues.