The AST Suspension 5100 Comp Series Coilovers ACT-P2003S is a high-performance suspension system designed for use in racing and high-performance street applications. These coilovers feature a monotube design with 46mm diameter pistons and a 14mm hard chrome shaft for improved strength and durability. The adjustable damping technology allows for 12 levels of compression and rebound adjustment, providing precise tuning for various driving conditions. The coilovers also have adjustable ride height and spring preload, allowing for customizable suspension settings. The 5100 Comp Series Coilovers are designed for improved handling, cornering, and overall performance on the track or street.