Progress Technology 77.1000.3555 Coilover Spring and Shock Assembly

The Progress Technology Coil-Overs Series II (CS2) delivers an economical solution for enthusiasts seeking adjustable suspension performance without the premium price tag. Designed as an accessible alternative to the original Progress Coilovers, the CS2 system provides the stance, handling improvements, and adjustability that racers and street enthusiasts demand at approximately half the cost of higher-end coilover systems.

Key Features:

• Twin tube damper design for reliable performance and comfortable ride quality
• Sealed dampers provide maintenance-free operation (non-rebuildable construction)
• 2.50-inch inner diameter race springs for proper load distribution and performance
• Height adjustable design allows customization of vehicle stance and suspension geometry
• Perfect for entry-level racers, track day enthusiasts, and street performance applications
• Featured on ESPN's automotive competition show PINKS

The Progress CS2 Coilover system offers an ideal balance of affordability and performance for drivers looking to upgrade from stock suspension. The twin tube construction provides predictable damping characteristics, while the adjustable spring perches allow you to dial in your desired ride height. Whether you're preparing for your first track event or simply want improved handling and aggressive appearance, the Series II Coilovers deliver proven performance at an entry-level price point.