Landrum Springs J150-350 13" x 5" Progressive Rear Coil Spring

The Landrum Springs J150-350 is a high-performance progressive rate rear coil spring designed for racing and performance applications. This spring measures 13 inches in length with a 5-inch outer diameter, providing a robust foundation for rear suspension systems.

Key Features:

• Progressive rate design for improved handling and weight transfer control
• 13-inch free length for precise suspension geometry
• 5-inch outer diameter for compatibility with standard rear spring perches
• 350 lb/in spring rate for balanced performance
• Manufactured from high-quality spring steel for durability and consistency
• Designed specifically for rear suspension applications

Progressive rate springs like the J150-350 offer the advantage of a softer initial rate for improved ride quality and traction, with increasing stiffness as the spring compresses to control body roll and weight transfer during acceleration and cornering. This makes them ideal for drag racing, oval track, and other motorsports applications where optimizing rear suspension performance is critical.