Old Man Emu Rear Coil Springs in Black with 318 lbf/in Spring Rate for 5th-Gen 4Runner (2010–2024) - Pair

Old Man Emu developed these rear coil springs to address the real-world requirements of heavily equipped 4Runners. Additional fuel, water, armor, and recovery gear place continuous strain on factory suspension components, often leading to sag and reduced control. By increasing spring rate and optimizing coil geometry, these springs restore proper ride height while improving load management and stability under varying terrain conditions.

Manufactured from microalloyed spring steel, each coil is formed on computer-precision mandrels to ensure dimensional consistency and accurate vehicle fitment. Tight production tolerances support proper seating within factory mounting locations and predictable suspension behavior under load.

Each coil is formed from microalloyed spring steel on computer-precision mandrels to ensure dimensional consistency and accurate fitment. Controlled production tolerances support proper seating and predictable suspension response under load.

Double scragging relieves internal stress within the steel to promote long-term ride height retention. This process reduces material fatigue and supports structural integrity. A durable black powder coat finish protects against corrosion and environmental exposure.

Designed to exact vehicle specifications, these coils install in factory rear spring locations without modification. Spring selection should align with intended constant load to maintain proper suspension geometry and consistent ride characteristics.