RAM 1500 DT (2019-On) Petrol/Diesel 2019-On (Excl. Air Susp) King Springs KDFR 406 Kings Coil Springs
KDFR 406

For over 30 years, we have been a trusted stockist and distributor of King Springs in Western Australia. King Springs are proudly manufactured in Australia using advanced X5K Steel, a new generation of high-strength spring steel that is engineered to withstand higher operating stresses. This material offers superior resistance to sag, enhanced toughness, and improved corrosion fatigue properties.

Upgrading to aftermarket raised springs is an excellent choice for vehicles equipped with additional accessories, heavily laden setups, or for those seeking improved load-carrying capabilities and increased ground clearance. All King Springs heavy-duty replacement springs are designed to provide an uprated performance, typically ranging from 20% to 40% depending on the specific vehicle application.

When selecting the appropriate spring rate, it is crucial to consider the fixed accessories installed on the vehicle. For example, the KDFR 406 model offers an approximate lift height of 40-50mm and is suitable for vehicles with steel bars. This model measures 210mm from the center of the lower shock absorber bolt to the base of the spring seat. It is recommended to reuse the factory insulator from the original coils when installing the replacement King Springs coils.

For optimal performance, pairing long travel shocks with raised springs is advisable. Please note that the degree of height achieved may vary based on the vehicle's age, the accessories fitted, the materials used for those accessories, and certain factory options. Additionally, images provided are for representation purposes only and may not accurately depict the specific part number being viewed.

King Springs Information

• Wilkinson Suspension has been a WA Stockist and Distributor of King Springs for over 30 years!
• King Springs are manufactured here in Australia using X5K Steel.
• This new generation High Strength Spring Steel can withstand higher operating stresses and has superior resistance to sag, improved toughness and improved corrosion fatigue properties.
• Fitting an aftermarket raised spring is ideal for vehicles fitted with accessories, heavily laden vehicles, improved load carrying abilities and increased ground clearance.
• All King Springs heavy duty replacement springs are designed to be uprated.
• The degree of uprating varies between vehicles, but can generally be stated at 20-40%.
• Select the most appropriate spring rate option to suit the fixed accessories on the vehicle.

Product Notes

• Approximate Lift Height: 40-50mm KDFR 406 - Up to Steel Bar
• Measures 210mm from centre of lower shock absorber bolt to base of spring seat.
• Please reuse factory insulator from original coils onto the replacement King Springs Coils.
• Recommend long travel shocks with raised springs.
• Degree of height may vary depending on life and/or age of the vehicle, accessories fitted, material used for accessories and some factory options.

Approximate Lift Height: 40-50mm

KDFR 406 - Up to Steel Bar

Sold as a Pair.

High quality 4x4 suspension upgrades proudly sold by PPD Performance.

Shipping Policy

PPD Performance offer custom built suspension solutions, with unique adjustability and performance.

These kits are assembled to order to suit your requirements, with an average lead time that can vary between 1-3 days.

If you need a specific eta, please contact us before ordering and we will be sure to assist you.