* Some items are excluded due to manufacturer restrictions. Tires, wheels, and leaf springs sold individually or in pairs are excluded. Only one coupon code may be applied per order. Coupon codes may not be combined with other discount codes or applied to prior orders. Coupon codes may or may not apply to sale items, depending on the item.
At Jack-it we offer the Old Man Emu coil springs for Toyota SUV models. These springs are a high-quality upgrade that will improve ride quality while also adding a small amount of lift to the rear of your vehicle.
Old Man Emu is committed to producing premium quality components. This includes their coil springs. Below are some of the ways they ensure those quality standards are met.
Materials: Micro-alloyed spring steel is used in all Old Man Emu coil springs. This process of adding small quantities of alloying elements enhances the strength of the steel used. This is particularly important for coil springs, which need to withstand repeated cycles of compression and extension without permanent deformation.
Shot Peened: Old Man Emu requires all their coil springs to go through the "shot peening" process to ensure maximum resistance to fatigue or failure. This process entails each coil spring being loaded into a machine that shoots thousands of small steel balls at the springs, creating small indentations or dimples on the surface of the steel alloy. These dimples strengthen the springs to resist tensile stress that can develop during the lifespan of the coil springs.
Double Scragged: After springs are shot peened, they are then double scragged. This means each spring is pre-set or stress-relieved by compressing it beyond its normal working range. This is done twice.
Finish: To enhance both aesthetics and durability, Old Man Emu coil springs are finished with a hard-wearing black powder coat. This coating not only protects against corrosion but also adds a touch of ruggedness to your vehicle's undercarriage.
