AST BMW G80-G81M3 G82-G83 M4 AWD / G81 M3 X-drive 2021- 5100 STREET Coilovers (rr non coilover)

AST 5100 STREET NCO Suspension Kit

Perfect Everyday Balance — Street Comfort Meets Performance Tuning

If you're looking to strike the perfect balance between daily driving comfort and responsive performance, the AST 5100 STREET NCO Suspension is the ideal upgrade for your car. Designed for enthusiasts who demand confidence-inspiring handling without sacrificing ride quality, this suspension system maximizes grip and delivers adjustable rebound damping and ride height control for a personalized driving experience.

Built on a monotube damper design, the 5100 Series offers increased responsiveness and performance consistency across a range of road conditions. The front utilizes a true coilover setup, while the rear retains the OEM-style divorced spring/damper configuration for enhanced ride comfort. Designed to work with OEM top mounts, this system is plug-and-play ready and includes springs with vehicle-specific fixed spring rates in the rear for optimal baseline performance.

🔧 Key Features:

• Monotube construction with large piston for responsive rebound control

• 12-position rebound adjustability for fine-tuning comfort and performance

• Front coilover / rear divorced setup mirrors OEM layout for comfort with control

• Designed to use OEM top mounts

• Includes AST springs with fixed rear spring rates based on real-world testing

• Adjustable ride height to achieve your desired stance and road balance

• Rebuildable dampers serviceable through AST-certified service centers

• Optional EDC delete kit available for vehicles equipped with factory electronic damping

🚗 Perfect For:

• Daily drivers who want more control

• Weekend canyon and spirited road driving

• Lowered looks with preserved comfort

• OEM+ or mild performance builds