These Associated factory replacement rear shock springs are tuned to a 2.3 lb/in spring rate and are identified by their yellow color coding for easy setup reference at the track. Measuring 61mm in length with 9.5 turns and a 1.2mm wire diameter, they are purpose-built for 13mm shock bodies. Sold as a pair of metal coil springs. Features: 2.3 lb/in spring rate 61mm length, 9.5 turns, 1.2mm wire diameter Fits 13mm shock bodies Yellow color-coded for quick identification Sold as a pair 7/7/26 cs