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 worlds 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
Start of the Art Heat Treatment
Heat treatment is unseen and is the most important steps in the coil spring manufacturing process. Hardening and tempering is completed by an extremely precise electronically controlled furnace to eliminate breakage and sagging.
Formed On Precision Mandrels
Each coil is precisely placed by a programmable logic computer to achieve perfect pitch. This is especially important in manufacturing variable and progressive rate springs.
High Intensity Shot Peening
All Dobinsons coils are shot peened to give longer life.
Precise End Configurations
Engineered coil ends are designed to fit directly into the original vehicle mounting points without any modification.
Spring Design engineers within Dobinsons Spring & Suspension™ utilize 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.
Powder Coat Finish
A durable powdercoat finish provides extreme protection against the elements
Fully Scragged & Load Tested
All coils are scragged 100% to eliminate subsequent spring sag and load tested to ensure that they meet and maintain the required specifications. Dobinsons alsoo perform spring fatigue testing and spring hardness testing using in-house state of the art testing equipment.
With over 60 years of experience manufacturing in Australia, Dobinsons
Spring and Suspension are no strangers to providing only the highest quality
spring and suspension components, and Dobinsons range of leaf springs
are no exception.
Dobinsons range of leaf springs include raised and heavy duty leaf springs
for 4wd’s, heavy duty and parabolic replacement springs for trucks and
commercial vehicles and raised and replacement springs for 4×2 utilities
and passenger vehicles. In most cases there are multiple options available
to ensure the correct spring is available to meet each customers requirements.
Manufactured to international quality standards ISO9001:2008 and TS 16949 using
premium grade Sup 9 silicon manganese spring steel, Dobinsons range of leaf
springs are made to world leading quality standards.
High Quality Spring Steel
Dobinsons leaf springs are manufactured from only the highest quality raw materials. With over 60 years of experience Dobinsons understand the importance of selecting not only the highest quality spring steel but the correct grade that will give the longest life under the harshest conditions
Dobinsons design engineers ensure that every spring is designed specifically for the vehicle, load and height requirements for each application. The spring design is the most important step in manufacturing a leaf spring and with over 60 years designing and manufacturing, Dobinsons understand the importance of this. Design features include Drawn, tapered and thinned leaf ends for even stress distribution over the entire spring pack, 2 stage spring design for the rear of most vehicles to acheive 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 step of the manufacturing process of Dobinsons leaf springs is vital to ensure the complete spring pack will outperform the competitors. Each spring is manufactured to international quality standards ISO9001:208 and TS 16949.
For most vehicles Dobinsons offer multiple options to best suit the customers need. This ensures the correct spring rate is matched for the vehicle and accessories added, and provides a raised height where applicable without going beyond the safe design requirements to enhance performance, load carrying capacity and offroad 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
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.
High Strength Alignment Clips
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.
Shotpeend and Scragged
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 Twin Tube Nitrogen Gas charged shock absorbers are made
from the world’s highest quality external and internal parts sourced worldwide.
They provide a significant increase in performance over the standard shock
Originally eqipped shock absorbers are prone to shock fade and when a vehicle
is loaded simply cannot cope with the additional weight and the harsh condition
that 4X4 owners love to put them through.
Dobinsons twin tube shock absorbers feature larger bodies, larger bores and increased
valving performance to dramatically improve vehicle handling and control and reduces shock fade.
NITROGEN GAS CHARGED
Each shock absorber is filled with high quality Hi-Temperature shock absorber oil then filled with low pressure nitrogen gas to pressurize the oil and assists in reducing oil aeration commonly know as Shock Fade.
Where possible Dobinsons design each part number to provide a longer shock absorber for more wheel travel, firmer valving for a more controlled ride and a larger body with increased oil capacity for cooler operation than the original vehicle shock absorbers.
Other hidden design features also include thicker external tube wall thickness up to 3mm on Dobinsons 4×4 struts where other brands use as small as 1.5mm.
Selected Dobinsons 4×4 struts also include single piece drop forged lower mounting stems to provide far superior strength and reliability.
HIGH QUALITY PARTS
Only the highest quality internal and external parts are used to ensure hassle free long life operation. When developing shock absorbers, Dobinsons test every single component of the shock absorber to ensure each part can withstand the vast difference in operating temperatures, a variety of different environments and conditions, and also ensure each part provides long service life.
These include Japanese NOK Multi-Lip seals, Fuchs German shock absorber oil, Natural Rubber bushings for reduced Noise Vibration Harshness, high quality Teflon piston rings and Double Chrome hardened rods are just a few of the components that put Dobinsons shock absorbers ahead of the rest.
As Dobinsons Spring and Suspension have been manufacturing the highest quality springs and suspension components for over 60 years, they are no strangers to state of the art manufacturing processes. Dobinsons 4×4 shock absorbers are manufactured using the latest technology and are manufactured to TS16949 International Quality Assurance Systems. This includes double re-enforced robotic welding, friction welding, CNC Machined components and drop forging of high stress mounting components.
Dobinsons 4×4 shock absorbers are first completely quality checked and Valve Force-Velocity Dyno tested in the factory before final approval.
Dobinsons then perform further in depth quality testing in their Australian head office to ensure long life reliability.
In House Dyno Testing
Dobinsons perform further sample testing of the shock absorber valve forces using a state of the art Dyno testing machine. This ensures each shock absorber is manufactured in accordance with Dobinsons requirements to provide accurate valving for each application
In House Durability Testing
A completely custom made shock absorber durability tester was built for Dobinsons to simulate extreme conditions a 4WD experiences over its’ lifetime. This machine is crucial when designing and testing each component to minimize any possibility of component failure. The durability tester simulates real life conditions with varying velocity’s where shock absorber operating temperatures can exceed staggering temperatures of over 100 degrees Celsius. The tester provides real time feedback of temperatures, velocity and valve force which is crucial when testing for shock fade when Dobinsons shock absorbers are pushed beyond a few million cycles.
Component and Performance Testing
Dobinsons shock absorbers are also stripped down and components tested using different processes to ensure they meet Dobinsons strict quality requirements. Finally ride quality and in vehicle performance testing is performed to check final ride comfort, handling, load handling ability and performance to ensure each type of shock absorbers outperforms the best.
MONOTUBE REMOTE RESERVOIR SHOCK ABSORBERS
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 thevehicle 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.
66mm Body & 60mm Bore (Larger 4×4’s)
56mm Body & 50mm Bore (Smaller 4×4’s and Commercial Vehicles where space is restricted)
18/22mm Chrome Piston Road
3mm Shock Body Wall Thickness
External Oil Reservoir
Includes Reservoir Mounting Brackets
Direct Bolt-In Design
Adjustable Height Heat-Sync Spring Seats (where applicable)
Natural Rubber Bushes for Reduced NVH & Improved Articulation
Single Piece Lower Strut Legs (where applicable)
Integrated Dust Cover
Dobinsons Spring and Suspension’s range of heavy duty 4wd
torsion bars are manufactured from high quality micro alloy steel
with a thicker bar diameter than the original vehicle torsion bars to
improve performance when accessories are fitted. When vehicles
are fitted with additional accessories such as steel bullbars, winches,
dual battery kits and other frontal accessories the weight placed on the
torsion bars can be dramatically increased.
The torsion bars fitted to the vehicle will not withstand the additional weight
placed on the vehicle and will be prone to sag and will offer poor handling and
offroad performance. Dobinsons heavy duty 4wd torsion bars feature increased spring rate (thicker bar diameter) to better handle the additional weight and provide far improved handling, ride height and offroad performance.
Increased Spring Rate
Dobinsons torsion bars feature an increased bar diameter, thicker than the original vehicle torsion bars. Dobinsons uprated torsion bars provided a far superior ride that will greatly reduce bottoming of the suspension and will improve the vehicles handling whilst also offering far greater reliability at increased ride heights.
Cold Rolled Splines
Dobinsons torsion bars feature cold rolled splines to increase strength, reliability and ensure a perfect fit.
Durable Powdercoat Finish
A thick durable powdercoat provides protection against corrosion.
Directionally Preset and Scragged
As torsion bars have load applied in a particular direction during compression travel, Dobinsons have their torsion bars directionally preset and scragged to prevent sagging and breakage.
Dobinsons heavy duty torsion bars have precision end fitment and are marked both left and right hand side, and also importantly front and rear to ensure correct simple fitment the first time. Fitting torsion bars on the incorrect side or back to front will damage the torsion bars as they are preset and scragged in the required direction.
When raised suspension has been fitted to a vehicle it can alter the vehicle's
suspension, brakes and steering geometry and in some cases this requires
additional suspension components to ensure the vehicles handling and
performance isn’t compromised. This is espeically important in vehicles
fitted with larger lift kits.
Where applicable the rear brake proportioning valve adjusters/extensions should be
fitted to allow normal braking operation.
For suspension lifts of up to 50mm a castor bush kit is recommended but not mandatory,
a wheel alignment is recommended to determine whether a castor bush kit is required.
For lifts above 50mm, castor correction is required. Some vehicles also have additional driveline spacers, gearbox spacers and other parts which may be required when fitting a suspension lift.
Some of the alignment components required include:
Castor Bush Kits (Rubber & Poly)
When raised suspension is fitted to vehicles equipped with a solid axle style front suspension setup the castor angle can be altered and can result in a small wobble or shake through the steering.To correct this Dobinsons have a range of fixed angle polyurethane castor correction bushes, fixed angle rubber castor correction bushes for improved ride and articulation and adjustable polyurethane castor correction bushes to return the castor angle to the correct position.
Sway Bar Extensions
Raising the vehicles suspension can also cause some components such as the sway bar links to become a little too short and limit wheel travel. For this reason Dobinsons have released heavy duty sway bar link extensions to suit some Nissan Patrols and some Toyota Landcruisers.
Raising the vehicles suspension on vehicles equipped with live axle suspension can also alter the diff alignment. Dobinsons range of heavy duty adjustable panhard rods correct this alignment and feature high quality rubber bushes for maximum articulation.
Castor Plate Kits
For Nissan Patrol Y60/Y61 (GQ/GU) and Toyota Landcruier 80/105 series that have lift kits of between 4 and 6 inches Dobinsons have 5 degree castor plate kits available to correct the castor angle.
Brake Proportioning Valve Extensions
When raising a vehicle the braking system can be affected as the braking bias front to rear is changed. For this reason Dobinsons recommended fitting one of their brake proportioning valve extensions when ever lifting a vehicle.
Dobinsons have a range of coil strut top caps available for most popular 4×4 models. These can be used to replace the original worn strut top caps or can be fitted to coil struts with coil springs allowing a complete strut assembly that is a simple install.
Driveline and Suspension Component Spacers
Dobinsons also have a range of other various driveline spacer items that are required when lifting vehicles.
Aussie airbags are made from the finest materials and built to exacting standards.
Our airbags have been tested over 450psi and manufactured on advanced
machinery to ensure a perfect and consistent airbag. Aussie Air Suspension pressure
test all their air bags, schrader valves and fittings prior to the kits being assembled to
ensure there are no leaks.
The single, double or triple bellow air bags it allows the vehicle to still have wheel travel
with the minimum psi of 7psi and maximum pressure of 100psi.
The Standard helper kit includes bolt on brackets, air bags, lines, fittings and Schrader values for easy inflation an fitting.
Maximum 1100kg per bag
Suspension components listed for 75mm (3") and 100mm (4") lifts on this page are
for off-road use only.
- Refer to local laws before fitting to Registered/Road vehicles
- An Engineering Certificate may be required
- Handling characteristics will diminish on lifts above 50mm (2")
The following modifications (but not limited to) need to be made to the vehicle before
the kit is fitted:
- Adjustable panhard rods
- Modified Leading/Trailing arms
- Brake hoses
- Extended bump stops
- Gear Box & Drive Line modifications
- Steerings arms
- Swaybar modifications
CAUTION: Kulkyne Kampers and Dobinsons Spring & Suspension do not accept any responsibility for injury caused to person or property though the use of products listed in this vehicle selector
These products do not come with any warranty or guarantee
Bull bars not only look tough, they provide important front protection for your vehicle. Our range, supplied by Dobinsons Spring & Suspension, combines quality and value across three design options. Remember that adding a bull bar will change the riding height weight of your vehicle, so bull bar and suspension selection go hand-in-hand. Take a look at our Bull Bar page for more details.
When you’re off the beaten track, stuck and lacking traction, it’s not always as simple as relying on a mate with traction to bale you out. Steep inclines and muddy conditions are problematic and adding a second vehicle to the dilemma doesn't help anybody. Using a quality winch, with a cordless remote for added safety is a much better way to successfully retrieve your vehicle. to view our full range click the link below: