Entirely redesigned back long suspension supply is 2mm longer, which really helps to create more hold in low traction conditions and improves security on greater traction surfaces and improves managing on bumpy songs. Produced from super-tough, high-tech composite material provides a fantastic balance between dependability and performance. The suspension system arm is rigid enough for a responsive feel and extreme durability. This COMPLEX arm would work for many track conditions, specially moderate- and high-traction songs. Smart arm design permits adjustable placement of back shocks. Dependent on track conditions, the rear shocks may be installed either in front of or behind the rear shock tower, while the back shock tower may be put either before or behind the bulkhead. To be used with matching #363123-H difficult lower left arm. Fits just XB4´20