5inodx10.5in x 150# Rr Spring

The 5 inch OD x 10.5 inch x 150 lb/in rear spring is a conventional coil spring engineered for vehicles requiring precise load support and consistent ride quality. As a seasoned mechanic, you'll recognize this as a critical suspension component that maintains vehicle height, handles axle articulation, and distributes weight evenly across the rear suspension geometry. This spring is ideal for stock replacement, performance tuning, or restoration work on vehicles originally spec'd for this spring rate.

Built from high-grade steel and finished with blue epoxy coating for corrosion resistance, the 5 inch OD x 10.5 inch x 150 lb/in spring delivers a 150 pound-per-inch rate—a moderate spring constant suitable for balanced handling without excessive stiffness. The 10.5-inch compressed length and 5-inch outer diameter fit standard rear suspension mounts, while the epoxy finish protects against road salt, moisture, and UV degradation. At 3.93 pounds per unit, this spring contributes minimal unsprung weight, preserving suspension responsiveness and tire contact patch consistency during acceleration, braking, and cornering.

Mechanics and DIY enthusiasts typically install rear springs when addressing sagging suspension, replacing worn factory springs, or upgrading to matched spring sets for improved stance and handling balance. Verify OEM compatibility by cross-referencing the MPN M10.5-150 against your vehicle's factory suspension specifications before purchase. Installation requires a spring compressor or professional suspension work to ensure safety and proper alignment—never attempt removal or installation without appropriate equipment or expertise.