Completely redesigned backside long suspension supply is 2mm longer, which helps you to generate more grip in low traction conditions and improves stability on higher traction surfaces and improves handling on bumpy songs. Created from super-tough, high-tech composite product gives a great balance between reliability and gratification. The suspension arm is rigid enough for a responsive feel and extreme durability. This HARD supply would work for some track conditions, specially medium- and high-traction songs. Smart arm design enables variable placement of back shocks. According to track conditions, the trunk shocks is installed either facing or behind the trunk surprise tower, as well as the rear shock tower may be placed either facing or behind the bulkhead. For use with matching #363113-H difficult reduced right arm. Fits only XB4´20