Old Man Emu Rear Dual-Rate Coil Springs in Black with 143–257 lbf/in Spring Rate for 4th-Gen Tacoma (2024–Present) - Pair

Designed as part of a vehicle-specific suspension system, the Old Man Emu Dual-Rate Rear Coil Springs improve rear-end composure while supporting a wide range of load conditions. Emphasis is placed on maintaining ride quality without sacrificing strength, allowing the suspension to perform predictably across changing terrain and cargo demands.

Manufactured from state-of-the-art micro-alloyed spring steel, each coil is formed on computer-controlled mandrels to ensure dimensional accuracy and repeatable performance. The springs are double scragged before and after shot peening to reduce internal stress and extend service life.

The dual-rate design provides a compliant initial rate for everyday driving, transitioning smoothly into a firmer rate as load increases. This approach improves stability under cargo or accessory weight without compromising unloaded ride quality.

When paired with corresponding Old Man Emu shock absorbers, these coil springs form a balanced rear suspension system designed to work cohesively. Matched tuning enhances overall vehicle control and long-term suspension performance.

A hard-wearing black powder-coated finish protects against corrosion, environmental exposure, and abrasion. The coating maintains structural integrity and appearance through prolonged use in harsh conditions.