The 'D' Spring is typically designed to support extra heavy additional loads on your vehicle and offer lift for improved ground clearance.
Selecting the correct spring is essential to the overall performance of your suspension set-up, so if you are unsure, please consult your Ironman 4x4 store.

Ironman 4x4 coil springs are vehicle-specific, manufactured with premium grade steel and carry a 4-year unlimited kilometre warranty.