R1B 13mm Rear Spring [L58mm]Standard and optional rear spring range range for the R1B.Key Features and Specifications:R1 Wurks genuine replacement / Option partMade from high quality spring steelIncludes: x2 of the selected spring.Spring Chart:ColorRate (lb/in)Rate (gf/mm)Green1.80 lb/in32.1 gf/mmWhite1.90 lb/in33.9 gf/mmGray2.00 lb/in35.7 gf/mmBlue2.20 lb/in39.3 gf/mmYellow2.30 lb/in41.1 gf/mmNote:Dirt kit standard rear spring: White / 1.90 lb/inCarpet kit standard rear spring: Blue / 2.20 lb/in
