Up for sale is RACE TECH 2018-2019 430 RR Beta SHOCK SPRING 5.4KG. The vendor part number is SRSP 622854. Please read the title to know what is for sale HIGH PERFORMANCE SPRINGS: RACE TECH MANUFACTURES PRECISION HIGH PERFORMANCE SPRINGS THAT HAVE A HIGH STIFFNESS TO MASS RATIO. IN OTHER WORDS; OUR SPRINGS ARE LIGHTWEIGHT FOR THE THEIR PARTICULAR RATE. THIS REQUIRES THE FINEST MATERIALS AND PROCESSING.