These Schumacher Racing Products long blue shock springs are rated at 4.0 lb/in and are designed as a factory replacement for the Cat 2000 platform. Sold as a pair, they allow precise tuning of suspension response to suit different track conditions. The metal coil construction and color coding make it straightforward to identify and organize spring rates across your setup. Features: 4.0 lb/in spring rate Long length format Blue color-coded for easy rate identification Sold as a pair Designed for the Schumacher Cat 2000 platform 7/7/26 cs