Rear Coil Springs in Black with 387 lbf/in Spring Rate for 5th-Gen 4Runner (2010–2024) - Pair

Old Man Emu developed these heavy-duty rear coils for 4X4 owners who consistently operate with added rear weight. Fully outfitted overland builds place continuous strain on factory suspension, often resulting in sag and compromised control. A significantly increased spring rate restores proper ride height and supports stable handling under sustained load.

Formed from microalloyed spring steel on computer-precision mandrels, each coil maintains strict dimensional accuracy for reliable vehicle fitment. Controlled manufacturing processes ensure consistent rate performance and proper seating within factory mounting locations.

A 387 lbf/in spring rate delivers substantial resistance to compression, limiting squat during acceleration and reducing bottoming on technical terrain. Rear-end stability is noticeably improved when the vehicle is fully equipped.

Double scragging reduces internal material stress to enhance long-term ride height retention and structural integrity. This process minimizes fatigue under repeated load cycles. A hard-wearing black powder coat finish protects against corrosion, debris impact, and environmental exposure.

Designed to exact 5th-Gen 4Runner specifications, these coils install in factory rear spring locations without modification. Proper spring selection based on constant rear load ensures correct suspension geometry and dependable long-term performance.