Extras - Coil & Spring Design and Fabrication

For over 45 years The Ultimate Suspension has set the standards for custom 4WD suspension systems.

Leadership and innovation in design and manufacturing of suspensions systems has been the foundation of the success and the good reputation of The Ultimate Suspension.

Ultimate spring process

The Ultimate Leaf Spring is a fully-staged progressively laminated leaf spring. The length of each spring is proportioned to the length of the preceding leaf, improving the characteristic of the spring. SUP 9A grade spring steel is used exclusively which increases elasticity and memory as well as giving longer life and better safety.

Ultimate leaf springs are heat-treated in computer-controlled furnaces to precise temperatures. Precision is required due to the fact that high-grade steel is less tolerant to variations in temperature (during manufacturing) than commonly used lower-grade steels. The fully assembled springs are subject to a final test which involves repeated deflections under extreme pressures to ensure all leaves are seated and working as an effective unit.

Ultimate range of springs

Ultimate leaf springs are designed specifically for each vehicle. Spring are manufactured to suit different vehicle loadings and driver requirements. Springs can be cambered to accommodate different loadings on the driver and passenger sides of the vehicle. Final quality control inspectors mark the springs indicating whether the camber is at the upper or lower level of its tolerance. This allows matched sets of springs and can be fine-tuned for additional unequal vehicle loading. Spring rates are then matched with appropriate shock absorbers from the Ultimate Suspension range according to the specific vehicle application.

The superior design, materials and manufacturing techniques used by The Ultimate Suspension for production of leaf springs delivers a premium product with the assurance of outstanding performance and safety, all backed by The Ultimate Suspension's unique Life Time Warranty* (Conditions Apply).

  • Spring eyes fitted with steel sleeves where applicable, which reduces wear on bushes
  • Specially designed spring eye gap return reduces stress during main spring deflection
  • Leaves are diamond cut on the friction edge allowing distribution of heat and friction over a greater area, increasing life and efficiency
  • Leaves individually stress relieved (shot-peened), deflection tested (scragged) and pre-set
  • All leaves individually cambered to suit application
  • Available in both lineal and variable staging
  • Available in a range of spring rates to suit individual applications
  • Lifetime Warranty (Conditions Apply)

Ultimate Coils

Comfort, performance and safety by design. The Ultimate Suspension coils are the result of combining decades of experience in suspension design and manufacturing using premium grade materials manufactured to international standards.

The ultimate fully-integrated suspension system provides a choice of coils with individually matched and tuned shock absorbers to suit each specific application.

The three basic suspension categories are standard height heavy-duty, raised height heavy-duty and raised height comfort. Different coils and spring characteristics are required for each category and can be customised to meet specific requirements.

Ultimate GVM Upgrades

We supply and fit a comprehensive range of State and Federally Approved GVM Upgrades to suit every vehicle and application. We'll assess your precise needs and recommend the most appropriate solution available.


Lovells GVM Upgrades

Ultimate shocks and Lovells springs. A relationship that spans over 40 years.


NET4X4 GVM Upgrades

Premium quality Volkswagen Amarok parts and accessories.


Ultimate Brake Upgrades

Braking performance and stopping ability is critical to vehicle safety. Brake upgrades provide for safe towing and operating with heavy loads.


Ultimate Transmission and Intercoolers

The Ultimate Suspension are distributors of HDi Intercoolers and Transmission coolers. HDi products are proven to provide increased engine performance and improved reliability.


Coil & Spring Design and Fabrication

Intelligent design, quality materials and precise manufacturing = The Ultimate winning formula.


Engineering and Testing

The Ultimate Suspension provide in-house Vehicle Certification, Engineering and Testing.


Aussie Ryder Shock Absorbers

New generation Aussie Ryder gas pressure twin-tube shock absorbers.


Torsion Bars

Constant Performance.


Specialised Lubricants

Australian made Lube Alloy premium lubricants


The Ultimate Service

  • Industry Leaders since 1975
  • A reputation built on superior knowledge and excellent service
  • Our world-class products are exported Globally
  • The Ultimate Suspension is a trusted name in the Armoured Vehicle Industry
  • Independent advice. We use and recommend products based on your needs
  • 24 Month or UNLIMITED km Nationwide warranty on Ultimate Shock Absorbers
  • We provide a LIFETIME Warranty on all springs
  • Highly Qualified ASE Certified Technicians
  • Driveline and Suspension Specialists
  • Good advice, product support and after sales service

Key Advantages

The Ultimate Suspension for your vehicle

The Ultimate Suspension, industry leaders with over 45 years of experience are Australia's most trusted name in suspension systems, GVM upgrades, braking upgrades and towing upgrades. Let us provide the ultimate solution for your vehicle. CONTACT US

Ultimate Towing Solutions

Experience superior vehicle handling dynamics and safety while towing with a GVM and DBA brake upgrade package designed specifically to suit your requirements. The Ultimate Suspension has the ultimate reputation for suspension and braking systems for all towing applications.

Ultimate GVM & Tow Capacity Upgrades

The Ultimate Suspension are a Lovells, Pedders, and JMACX/AEV Authorised Facility. Let us provide you the best in vehicle dynamics and safety while towing with federally certified pre or post registration GVM or BTC upgrade solutions.

Defence & Armoured Vehicles

The Ultimate Suspension are a trusted name in the Special Purpose Vehicles industry servicing and supplying the Australian Defence Force, Government Agencies, International Armoured Vehicle manufacturers and UN peacekeeping forces.

Extreme applications require the ultimate performance and dependability. The Ultimate Suspension excel in providing specialised systems for vehicles used in extreme operations.

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What Our Clients Say

(2006 Nissan Pathfinder)

Fantastic, I'm totally blown away by my ULTIMATE SUSPENSION

(2006 Nissan Pathfinder)
Ultimate Suspension saved my business. This is simply unbelievable! Man, this thing is getting better and better as I learn more about it. more
(2006 Nissan Pathfinder)
Ultimate Suspension was worth a fortune to my company. I made back the purchase price in just 48 hours! Thanks Ultimate Suspension! more
(2006 Nissan Pathfinder)
Definitely worth the investment. more
Tri State Safaris
(Mitsubishi Canter All Terrain Warrior 4WD Coach)

Tri State Safaris operates 4WD tours Australia wide in our Mitsubishi Canter All Terrain Warrior 4WD coach. The vehicle is only 12 months old but has always been in need of a better ... more

Michael Hall
(2006 Nissan Pathfinder)
Being dissatisfied with the very rigid ride from the original suspension on my 2006 Nissan Pathfinder, and following discussions with yourselves, I decided to have the suspension changed to The Ultimate Suspension Gas Shock Absorber System. ... more

These guys are absolutely fantastic to go to. I am really glad that I found them. Ken O'Keefe and his team spent two hours with me when I first turned up for a quote, ... more

Ali Raza
(Toyota Hilux)

I have had four suspensions from ULTIMATE SUSPENSION and I love the ride on all four Toyota Hiluxs.


Five stars, best improvement for my Triton. Got the lift and suspension upgrade 5 years ago and a rebuild this year. Car drives much better now!


I am so happy with my Ultimate Suspension, I wouldn't buy anything else in the future. Quality products, great service, not one issue with my lift kit which has now done 150000 Kms, car still ... more

(VW Amarok)

I had extensive suspension and other 4WD accessories supplied and fitted to an Amarok to accommodate a Trayon camper and outback travel. The advice provided was top class, the products supplied were excellent and ... more

(Pajero Sport GVM)

Friendly, experienced and knowledgable staff. Did exactly what was needed, no hidden extras. Very happy and loved the enthusiasm of the staff who clearly take pride in the service they offer.


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