These R1Wurks front shock springs are designed for the R1B platform and measure 42mm in length with a 4.6 lb/in spring rate. The gray color coding makes it easy to identify and sort springs by rate when tuning your setup. Sold as a pair, they fit 13mm shock bodies. These are a factory R1Wurks replacement part for consistent, repeatable suspension performance. Features: 13mm diameter spring 42mm length 4.6 lb/in spring rate Gray color-coded for easy rate identification Sold as a pair 7/7/26 cs