AST Linear Race Springs 180mm Length 110 N/mm Rate 61mm ID

AST Linear Race Spring — 180mm × 110 N/mm × 61mm ID Optimized for track and performance suspension , the AST Linear Race Spring delivers consistent, predictable spring rates for precise chassis control. Designed for racing and high-performance road use, this 180mm length spring with a 110 N/mm (approx. 629 lb/in) rate and 61mm inner diameter offers durability and repeatable response lap after lap. Length: 180 mm — compact fit for road and race coilovers Rate: 110 N/mm — firm, stable handling under high load Inner Diameter: 61 mm — compatible with common aftermarket struts and collars Construction: High-grade spring steel with precision winding for long service life Use case: Ideal for track days, competitive motorsport, and performance-oriented street applications Upgrade to AST Linear Race Springs for improved cornering precision, reduced body roll and consistent ride height under braking and acceleration. Each spring is engineered to maintain rate integrity and resist fatigue, ensuring reliable performance when it matters most. Fitment note: Verify compatibility with your coilover assembly and preload requirements before installation.