Cusco 672 61N CN Street Zero-A Coilover Kit with 40-Way Damping Adjustment

The Cusco Street Zero-A coilover system represents the top model in Cusco's street series suspension lineup, engineered for automotive enthusiasts who demand exceptional street manners combined with track-ready performance capabilities. This premium suspension system delivers fully adjustable ride height and damping characteristics without compromising daily drivability.

Advanced Damping Control:

• 40-way damping force adjustment with thumb-twist dial for tool-free tuning
• Twin-tube shock absorber construction with redesigned base valve for smooth operation
• CPRV (Pressure Control Valve) technology ensures consistent performance across varying stroke speeds
• Compatible with optional eCon2 electronic control for in-cabin adjustment
• Wide damping range with uniform changes from steps 1 through 40

Full-Length Adjustable Design:

The double-tapped full-length adjustment system allows precise ride height changes while maintaining suspension stroke and spring preload. This engineering approach preserves optimal shock performance regardless of vehicle height settings, with recommended lowering range of -50mm to -20mm front and -60mm to -20mm rear.

Premium Components:

• Front: Camber-adjustable pillow ball upper mounts for precise alignment tuning
• Rear: Heavy-duty reinforced rubber upper mounts for enhanced durability
• High-strength steel mounting brackets with ribbed lower brackets
• Precision-cut threaded shock body with special coating for smooth adjustment
• Preload adjustment lock nuts and lower spring seats included
• Protective dust boots guard against premature wear from road debris

Quality and Testing:

Assembled in Cusco's ISO 9001/ASEA certified facilities in Japan, each suspension system undergoes over 500 hours of elemental testing. Individual tuning for each vehicle application ensures optimal performance characteristics. Custom spring rates are available at no additional cost, with standard rates of 6kgf/mm, 7kgf/mm, or 8kgf/mm front and 3.5kgf/mm through 6kgf/mm rear depending on selection.

Ideal for street driving, autocross, and track day use where a balance of comfort and performance is essential.