SWIFT SPRINGS Z60-152-140 Swift Springs Z60-152-140 Coil-Over Spring, 6-Inch, 60 mm ID, 14 kgf/mm

The Swift Springs Z60-152-140 is a high-performance coil-over spring engineered for suspension applications that require consistent support, predictable handling, and reliable repeatability. Constructed from durable spring steel, this coil spring is designed to maintain its specified rate through demanding driving conditions while helping suspension systems respond smoothly to changing loads. Its blue powder-coated finish provides a clean appearance and an added layer of surface protection.
This spring uses a 60 mm inside diameter and is compatible with coil-over suspension systems designed for that fitment. The 6-inch free length supports a wide range of performance suspension setups, while the 14 kgf/mm spring rate delivers a firm, controlled response suited to applications that prioritize reduced body movement and improved chassis control. The approximate equivalent rate is 785 lb/in, making this spring appropriate for performance-oriented street cars, track vehicles, and other custom suspension builds when matched to the vehicle and damper specifications.
Swift Springs is recognized for producing precision suspension components for motorsport and performance applications. The Z60-152-140 coil-over spring is supplied individually and is intended for installation with compatible coil-over hardware, adjustable spring seats, and dampers rated for the selected spring rate. Before installation, verify inside-diameter compatibility, available travel, preload requirements, corner weights, and damper suitability. Proper setup helps ensure balanced handling, controlled suspension movement, and dependable performance. This spring is not air-restricted or limited to truck-freight shipping, providing a practical option for suspension upgrades and replacement applications.

Features:

• Brand: Swift Springs

• Part Number: Z60-152-140

• Application: Coil-over suspension spring

• Inside Diameter: 60 mm, approximately 2.36 inches

• Free Length: 6 inches

• Spring Rate: 14 kgf/mm, approximately 785 lb/in

• Construction: Durable steel

• Finish: Blue powder coat

• Packaging: Sold individually

• Fitment: Designed for compatible 60 mm coil-over suspension systems