These Associated 13x31mm threaded shock bodies feature a Kashima Coat finish, a hard anodized treatment that provides a low-friction surface. Designed for the Associated RC10 platform, they are a direct-fit replacement for worn shock bodies. Sold as a pair, the threaded collar design allows for spring preload adjustment. Features: 13x31mm threaded shock body dimensions Kashima Coat hard anodized finish Threaded design for spring preload adjustment Sold as a pair Metal construction 7/7/26 cs