AST Suspension AST-140-90-61 Linear Race Spring Length N/mm Rate ID - 140mm 90 61mm

The AST Suspension AST-140-90-61 is a high-performance linear race spring engineered for motorsport and high-performance street applications. This precision-manufactured spring features a 140mm free length, 90 N/mm spring rate, and 61mm inner diameter, making it compatible with a wide range of coilover suspension systems.

Key Features:

• 140mm free length for optimal suspension travel and geometry
• 90 N/mm (514 lb/in) linear spring rate for consistent, predictable performance
• 61mm inner diameter fits most aftermarket coilover systems
• Constructed from extreme high tensile chrome silicon wire for maximum strength and durability
• Coiled on precision Wafios compression coiling machines for exact tolerances
• Pre-blocked and corrosion-protected to OEM specifications
• Linear rate design provides consistent force throughout compression travel

AST Linear Race Springs are manufactured in-house at the company's European facility, ensuring strict quality control throughout the entire production process. Each spring is carefully crafted to deliver race-proven performance with the reliability needed for both competition and street use. The chrome silicon wire construction provides exceptional resistance to fatigue and stress, while the precision coiling process ensures every spring meets exact specifications for consistent performance.

Note: This part number is sold as a single spring. If replacing both front or rear springs, order quantity of two.