• Adjustable progressive action for ultimate torque control & traction
• Torque absorbed by coil spring to provide initial forward bite
• As engine torque increases, poly bushings engage to increase torque to rear tires
• Engagement point of poly bushings can be adjusted independently from coil spring to allow for changing track conditions
• Twin shaft design allow engine side & brake side to operate independently
• Allows corner entry & exit to be tuned separately
• Bushing/spring pre-load is always maintained