Old Man Emu Rear Dual-Rate Coil Springs in Black with 114–160 lbf/in Spring Rate for 6th-Gen 4Runner (2025–Present) - Pair

The Old Man Emu Dual-Rate Rear Coil Springs are designed to improve suspension control while accommodating a wide range of vehicle loads. By balancing ride comfort with increased carrying capability, these springs enhance stability, articulation, and overall driving confidence across both on-road and off-road conditions.

Manufactured from state-of-the-art micro-alloyed spring steel, each coil is engineered for superior resistance to sagging and corrosion. The springs are double scragged before and after shot peening to reduce internal stress and extend service life under repeated load cycles.

Each coil is formed on computer-controlled precision mandrels to ensure dimensional accuracy and manufacturing consistency. Spring end configurations are engineered to exact vehicle specifications, ensuring proper seating and reliable fitment within the factory suspension geometry.

The dual-rate configuration delivers a compliant initial response for daily driving while increasing spring resistance under heavier loads. This design improves ride control, reduces rear-end sag, and supports accessories such as cargo systems or overland equipment.

These rear coil springs are engineered to perform best when matched with corresponding Old Man Emu shock absorbers. Together, they create a fully integrated suspension system tuned specifically for the 6th-Gen 4Runner platform.