Please note: All suspension lift kits will come with recommended constant load springs to suit the vehicle. Refer to PDF for available options to suit the weight of accessories fitted to the vehicle.
Built on Pride, Developed with Technology
Dobinsons manufactures and repairs a large range of springs and sells a comprehensive range of suspension components for 4×4 Vehicles. Dobinsons stocks 13,000 spring and suspension specifications on hand, these recommendations should be used as a guide only and more consultation should be given.
With over 60 years of experience manufacturing in Australia, Dobinsons Spring & Suspension™ are no strangers to providing the highest quality spring and suspension components, and our range of leaf springs are no exception.
Our range includes raised and heavy duty leaf springs for 4x4’s, heavy duty and parabolic replacement leaf springs for trucks and commercial vehicles, plus raised and replacement leaf springs for 4×2 utilities and passenger vehicles. In most cases there are multiple options available to ensure the correct leaf spring is available to meet most requirements.
Dobinsons™ leaf springs are manufactured from only the highest quality raw materials. We understand the importance of selecting not only the highest quality spring steel, but also the correct grade that will give the longest life under the harshest conditions.
Our design engineers ensure that all our leaf springs are designed specifically for each vehicle model, with consideration given to the load and height requirements for each application. Design is one of the most important stages in the leaf spring manufacturing process, and with over 60 years of design and manufacturing experience, we recognise the importance of this.
Design features include Drawn, tapered and thinned leaf ends for even stress distribution over the entire spring pack, two stage spring design for the rear of most vehicles to achieve optimum ride and handling both laden and unladen and carefully selected leaf lengths and thickness’s to maximize the spring life, comfort, load carrying capacity, wheel travel and performance.
Each stage of the Dobinsons™ leaf spring manufacturing process is vital to ensure the complete spring pack will out perform our competitors products. Manufactured to international quality standards ISO9001:2008 using premium grade Sup 9 silicon manganese spring steel, Dobinsons™ range of leaf springs are made to world leading quality standards.
For most vehicles, we offer multiple options to best suit customer needs, this ensures the correct spring rate is matched for the vehicle model and the accessories added. This provides a raised height where applicable without going beyond the safe design requirements to enhance performance, load carrying capacity and off-road ability without compromising safety.
Where possible Dobinsons leaf springs utilize full military wrappers and full length wrappers to provide additional support to the main leaf and improve safety. Anti-Friction inter leaf liners are use to reduce the friction at each leaf end where the load is greates and provides a smoother, quieter ride.
Dobinsons leaf springs feature high strength alignment clips with nylon insulators to reduce wear and noise. Nyloc nuts are also featured on bolted clips to prevent loosening off nuts which can cause tyre damage.
Each Dobinsons leaf spring is shotpeened on the tension side of each life and completely scragged. This dramatically reduces the chance of sagging and breakage and doubles the expected working life of the spring. Random sampling from production is then also durability tested to ensure Dobinsons leaf springs will outlast the competitors.
Dobinsons Spring and Suspension™ proudly manufacture the highest quality replacement coil springs for many different applications to ISO9001:2008 international quality standards from their state of the art manufacturing facility in Central Queensland, Australia.
Dobinsons™ proudly boast one of the world’s largest range of coil springs including raised height and heavy duty 4wd springs, lowered performance passenger car springs, O.E. replacement springs and heavy duty springs for commercial vehicles.
As Dobinsons™ coil springs are manufactured in house, Dobinsons™ can manufacture smaller quantities and in most cases there are many different coil spring options available for your vehicle. This ensures the customer receives the best spring to suit their application and avoids a “One Size Fits All” scenario, especially important when selecting the correct spring rates and ride heights. When matched with a set of corresponding Dobinsons™ Heavy Duty Gas Shock Absorbers, Dobinsons™ can provide you with unrivalled performance and handling.
Spring Design engineers within Dobinsons Spring & Suspension™ utilise the latest coil spring design programs to ensure each spring will meet and exceed the design requirements and achieve the maximum working life. These state of the art design programs are crucial when designing variable/progressive rate springs to ensure laden and unladen spring rates are correct to provide the best possible ride comfort and handling.
Heat treatment is one of the most important steps in the coil spring manufacturing process. All Dobinsons coil springs are ‘hot wound’ and the hardening and tempering of our coil springs is completed by an extremely precise electronically controlled furnace to eliminate breakage and sagging.
Each coil spring is precisely wound by a programmable logic computer to achieve perfect pitch. This precision is extremely important when manufacturing variable and progressive rate coil springs. All Dobinsons™ coils springs are shot peened to increase durability and dramatically reduce fatigue.
Engineered coil ends are designed to fit directly into the original vehicle mounting points without any modification. All Dobinsons™ coil springs are load tested and scragged 100% to eliminate subsequent spring sag, and ensure they meet and maintain the required specifications. We also perform spring fatigue and hardness testing using in-house state of the art testing equipment.
A durable powdercoat finish provides extreme protection against the elements.
Twin Tube Nitrogas Shock Absorbers
Designed, developed and tested in Australia by Dobinsons Spring & Suspension, in house suspension design engineers, Dobinsons 4×4 shock absorbers are designed and tested to perform in the harshest conditions right across the world.
As Dobinsons Spring and Suspension export to over 40 countries worldwide from their Australian head office, the importance of quality is at the forefront in the complete design and manufacturing process. This ensures every shock can withstand the blistering heat and corrugations of the Australian outback right through to the subzero temperatures of a Russian winter.
- Nitrogen Gas Charged
- Superior Design
- High Quality Parts
- Manufacturing Process
Monotube Shock Absorbers & MRR
With serious 4×4 owners now pushing their vehicles through harder, harsher terrain with more accessories fitted to their 4×4’s than ever before Dobinsons saw the need for a no compromise, performance engineered shock absorber that offers the ultimate in performance.
Over four years of research, development and testing was undertaken to produce Dobinsons Monotube Remote Reservoir shock absorbers. Dobinsons MRR Series introduces premium quality build design and features to achieve the ultimate in performance and durability.
50mm and 60mm extra large bores, combined with remote oil reservoirs, provide the perfect housing for an enormous oil capacity and surface area to resist shock fade and maintain vehicle handling.
Unlike some other brands, each Dobinsons shock absorber is designed specifically for the vehicle and application and is designed to perform best when matched with Dobinsons Coil Springs. In some cases multiple options are available to ensure the best possible ride, handling, comfort and performance is achieved for the complete suspension system.
Dobinsons 4×4 U-bolts are made from high quality, 10.9 grade high tensile steel and supplied with hardened deep nuts for maximum clamping pressure and reliability. It is recommended that when replacing leaf springs that new u-bolts are fitted. Supplied in anti corrosion zinc finish.
Shackles & Pins
Dobinsons Spring & Suspension’s range of 4x4 shackles and pins have been designed and manufactured to maximize the life of both the polyurethane bushes and shackles. Incorporating a recessed twin hole greasable design to ensure both halves of the polyurethane bush receive even grease distribution. Greasing polyurethane bushes not only reduces friction and wear, it also reduces the chances of corrosion on the shackle pins and reduces squeaking. Dobinsons 4x4 shackles and pins are a heavy duty design and provide simple servicing through external grease nipples. In some cases Dobinsons also provide anti-inverse shackles to prevent the shackles from inverting on lifted leaf spring vehicles.
Dobinsons Spring & Suspension’s polyurethane bushes have been designed and manufactured from the highest quality raw materials and unlike other competitors have been designed to suit both Dobinsons leaf springs and the original vehicle leaf springs. Polyurethane-Bushes Dobinsons Polyurethane leaf spring bushes provide a smooth comfortable ride and when combined with Dobinsons 4×4 greasable shackles provide a far superior service life than the original vehicle bushes. Dobinsons polyurethane bushes feature unique internal diamond grease traps to maximize bush and shackle life.
For more information, please call us for more details & pricing.