5in. x 16in. x 175# Rear Spring

The 5in. x 16in. x 175# Rear Spring is a precision-engineered leaf spring designed for vehicles requiring heavy-duty load support and consistent suspension geometry. As a mechanic who has rebuilt countless suspension systems, I can tell you that rear springs are the backbone of ride quality, load capacity, and handling dynamics. This 175-pound spring rate addresses specific vehicle weight distributions and performance requirements, making it essential for trucks, trailers, and custom automotive builds where factory springs fall short or wear out over time.

The 175# rating refers to the spring's resistance to compression—how much force is required to deflect it one inch. At 5 inches wide and 16 inches in length, this leaf spring configuration provides optimal load distribution across the spring's contact points while maintaining the structural integrity needed for highway and off-road use. The spring's 6.92-pound weight reflects quality material construction, typically multi-leaf design with proper eye terminations for secure mounting. This specification ensures the spring maintains ride height under load, resists sagging, and delivers predictable suspension travel without binding or excessive flex that compromises handling or tire wear.

Mechanics and fabricators commonly upgrade to 175# springs when restoring worn suspension systems, installing custom bodies on existing frames, or tuning ride characteristics for towing and hauling applications. The dimensions and rate make this spring compatible with mid-size truck platforms and specialty automotive builds. Proper installation requires accurate mounting at both the frame attachment and axle perch; even slight misalignment reduces spring life and changes suspension geometry. If you're experiencing sagging, inadequate load support, or uneven ride height, a rear spring replacement with the correct rate is a straightforward, high-impact upgrade that restores factory suspension behavior or improves it for your specific use case.