Race Tech Shock Spring SK SPR 48.0x210 4.3/5.2 P30

LIGHT WEIGHT FOR THE RATE RT Hi-Performance Fork and Shock Springs have the highest stiffness-to-mass ratio in the industry. This means they are lightweight for their particular rate. These spring designs have taken years of manufacturing experience. They require the finest materials and processes. PRECISE RATES These springs are held to the highest rate standard. Most manufacturers hold their spring rates within 5% of the listed rate. This means a spring marked 5.0 kg/mm could be a 4.75 or even 5.25, and a spring marked 5.0 could be the same rate as one marked 5.4! RT Hi-Performance Springs have extremely accurate rates. They are heat-treated, shot-peened and preset so they cannot sack out.