About EFS

Enhanced 4WD Suspension is a quality driven product that has been proven in 4WD competitions throughout Australia & pushed to the limits by 4WD enthusiasts around the world.

EFS Suspension is not just a Shock Absorber but a complete integrated suspension package of Springs, Shocks & Components that work together to give quality on-road handling characteristics & greater off road ability.

EFS has designed & developed a high quality suspension system to combat Australia’s harsh off road conditions. The EFS range is under constant development & is put through the harshest tests with our sponsored competition vehicles.

The dedicated EFS research and development team have excelled in the fine tuning of shock absorbers, coil & leaf springs and components, with the development of the EFS Elite range.

The EFS engineers spend countless hours at the EFS Shock Absorber Dynamometer Facility, where they fine tune the internal shock absorber valving to suit each make and model of vehicle. What this means for you the customer, is that you have a product that gives you on road performance and off-road excellence.

“Because leaf and coil suspensions create different ride characteristics, the EFS shock absorber has been designed to suit each individual application”. EFS R&D Team

EFS stand behind their product with a 3 year / 100,000 km Warranty

Shock Absorbers

EFS Elite Shock Absorbers

The EFS Elite Shock Absorber Range is developed for the 4wd owner who only pursues the best for their 4wd. EFS is built with high quality Internal & external components combined together to give you excellent performance and longevity. EFS shock absorbers are vehicle & height specific with valving developed to suit each vehicle. “Not a one shock suits all approach”

51mm – 60mm External Tube – Greater oil capacity to keep the valve at a lower operating temperature
Low Pressure Nitrogen Gas – Prevent the oil from cavitating (foaming)
Long Travel Design – Maximises wheel articulation
35mm Piston, Twin Tube Construction – Increased control of the spring during rebound and compression cycles
16mm Quality Hardened Chromed Piston Rod Longer service life, and greater lateral strength
1.5mm Outer & Inner Wall Thickness Greater durability and strength
Dynamic Motion Control Valve – Adjusts to different road & off road conditions
Polyurethane and rubber bushes – HI quality elastomer and rubber mounting bushes to suit specific applications

EFS shock absorbers are vehicle & height specific with valving codes developed to suit each vehicle. “Not a one shock suits all approach”.

3 year / 100,000 Km warranty

EFS Enforcer Shock Absorbers

EFS Enforcer is designed for the price conscious 4wd enthusiasts, who need a shock absorber that gets the job done. 51mm External Tube -For greater oil capacity & to keep the valve at a lower operating temperature

Low Pressure Nitrogen Gas -To prevent the oil from cavitation (foaming)
Long Travel Design -To maximise wheel travel when a vehicle is raised and increase articulation
32mm Piston, Twin Tube Construction – Greater control of the spring during the rebound and compression cycles
15mm Quality Hardened Chromed Piston Rod -Increased durability
1.2mm Outer and Inner Wall Thickness -For greater durability and strength
Dynamic Motion Control Technology – Adjusts to different road and off road conditions
High Quality Internal & External Components – To prevent fade under harsh conditions and long life poly bushes for durability

3 year / 100,000 Km warranty

EFS XTR Shock Absorbers

The EFS XTR Shock Absorber Range is developed specifically for the Out-back off-road Tourer, with a heavily laden 4wd. It is Improved with increased oil capacities to reduce operating temperatures and incorporates a highly robust construction to take on the worst Australian Out-back roads. EFS XTR shock absorber are designed & developed to suit each vehicle and are not a one shock suits all approach. They are constructed from high quality internal and external components to meet the demands of the modern 4wd.

64mm External Tube – Greater oil capacity to keep the valve at a lower operating temperature Low Pressure
Nitrogen Gas – Helps prevent the oil from cavitating (foaming)
Long Travel Design – Maximises wheel articulation
40mm Piston, Twin Tube Construction – Increased control of the spring during the rebound and compression cycles
20mm Quality Hardened Chromed Piston Rod – Longer service life, and greater lateral strength
2 mm Outer & Inner Wall Thickness – Greater durability and strength
Dynamic Motion Control Valve – Adjusts to different road & off road conditions Vehicle & Height Specific Valving
Mounting bushes – EFS use long life polyurethane & rubber bushes dependant on application

3 year / 100,000 Km warranty

EFS Xtreme Shock Absorbers

The EFS X-Treme Shock Absorber has taken over three years to develop and test. During this period, it’s had countless trips along unsealed corrugated roads, highly strenuous technical off-road situations and has seen many laps of 4wd race tracks in competition vehicles. During this period the X-Treme has exceeded our expectations and has been pushed beyond the boundaries that a normal 4wd shock absorber can endure.

Over-sized Eye Rings & Pin Mounts
20mm Hardened Chrome Piston Rod
Durable Over-sized Concertina Dust Boot
2mm H/D External Wall Thickness
Internal Hydraulic Rebound Stop
Bonded Rubber Eye Bushes
Special High Temperature Fluid
Quality Multi-lip Viton Seal
High Strength Iron Piston Rings
Large 45mm Bore
Twin Tube Hydraulic Design
Dynamic Motion Control Valve

3 year / 100,000 Km warranty

DMC-T – Dynamic Motion Control Technology

DMC-T is a new advancement in shock absorber technology developed by the EFS Research and Development Team here in Australia. Over the past few years EFS have been pushing the boundaries of shock development & refinement to give you a shock that increases the control of your 4wd whilst maintaining positive traction to the contact surface. This new piston valve technology reacts within one hundredth of a second giving you ‘on the fly’ automatic adjustment of your shock absorbers which keeps you in control.

In a more simple term this valving system will negate the use of externally adjustable shocks because this technology adjusts automatically while you are driving to suit the driving conditions. During slow, off camber, off-road situations the EFS shock will allow your vehicle’s suspension to move in a more relaxed state allowing for greater articulation and off-road control. And during high speed situations eg.gravel roads and outback corrugations the valving tightens up with the speed of the fluid passing through the valve inside the shock, giving you added control and safety.

The complete current range of EFS Shock Absorbers and Struts have now been enhanced with DMC Technology to give you piece of mind and confidence when you next take on your 4wd adventure.

Steering Dampers

The EFS X-Treme Steering Damper provides unmatched steering control & reliability. It’s designed with increased valve forces to aid in the control of over sized tyres that increase bump steer and side load forces.

  • 35mm Bore
  • Oversized Bulged 60mm Body
  • 16mm Hardened Chrome Shaft
  • Gas Cell Technology
  • Allows the Steering Damper to operate horizontally
  • Increased Valve forces to suit 33 – 37 inch tyres

The EFS Enforcer Steering Damper increases the control over bump steer & improves steering control suited from standard to 33 inch tyres.

  • 32mm Twin Tube Hydraulic Design
  • Increased in size over O.E for greater oil capacity
  • 11mm & 12mm Hardened Chrome Piston Rod
  • Metal Dust Cover
  • Piston rod protection against the elements
  • Gas Cell Technology
  • Allows the Steering Damper to operate horizontally

Coil Springs

All EFS Coil Springs are:

Shot Peened – To stress relieve the outer surface of the Coil, so the Coil can operate under higher fatigue & repeated load conditions to ensure longevity.

Scragged for Quality Control – This is a process where the Coil is compressed beyond its yield point; this compression will set-up residual stresses and increase the elastic limit of the spring.

Powder Coated – To resist corrosion & to protect the spring steel from minor damage.

EFS Coil Springs are manufactured under a strict quality control system with the use of quality Spring steel in accordance with ISO-9002.

This ensures you are purchasing a high quality product that is backed by a 3 year/100,000km warranty.

EFS Coil Springs are produced in a variety of raised heights, From standard to 125mm & also a variety of spring rates to suit different applications – Towing, Load bearing accessories, Increased ride height & Competition.

Leaf Springs

Elite Leaf Springs

“Transform your rigid leaf sprung vehicle into a comfortable off-road performer with the EFS Elite comfort springs range”!!!

EFS Multi-Leaf Springs are made from high quality Japanese grade SUP9 & SUP9A Alloyed Carbon spring steel.
Designed as a comfort Leaf Spring that incorporates special features , to give the driver a comfortable ride on road & increased control off road with increased articulation & clearance. Available in 30mm to 80mm raised heights with a slight increase in spring rates over the original equipment.

Tapered Leaf Ends – To reduce the inter-leaf friction & to improve pressure distribution in the load bearing area.
Bolt Clip Liners – To reduce noise & friction.
Inter-Leaf Graphite Coating – For further reduction of friction.
Shot Peened & Scragged Tested – To reduce stress & ensure longevity.
Leaf Inserts Pads – For further reduction of friction.
Bolt Clips & Military Wraps – To prevent leaf spread & provide safety
Warranty – 3 year / 100,000 Km Warranty

Enforcer Leaf Springs

EFS Multi-Leaf Springs are made from high quality Japanese grade SUP9 & SUP9A Alloyed Carbon spring steel.
Designed as a Heavy Duty load carrying Spring with many load carrying capacity options.
To suit –
Mining Applications
Spear/radius cut endsHeavy laden touring vehicles
GVM upgrades

Inter-Leaf Graphite Coating – for further reduction of friction.
Shot Peened & Scragged Tested – to reduce stress & ensure longevity.
Bolt Clips & Military Wraps – to prevent leaf spread & provide safety
Warranty – 3 year / 100,000 Km Warranty

Torsion Bars

The EFS Torsion Bar is increased in strength by 25% to 30% over the standard O.E Bar. Just as Coil Springs & Leaf Springs fatigue & sag so do Torsion Bars. The EFS Torsion Bar will provide you with increased handling & response from your vehicle & compensate for extra loads.
Pre Stressed –To ensure longevity & durability
Increased in Spring rate – To compensate for load bearing accessories Made from High Carbon Alloy Steel (XK-5160)
Bars Feature – Machined Splines, Bar Peeled & Rolled to ensure strength & reliability

Note: The ends of all EFS Torsion Bars are painted with a colour code, when fitting these Bars the following applies.

Green to front of vehicle, Blue to left & Red to right.


EFS Polyurethane Bushes are made from high quality elastomers which gives the EFS Polyurethane Bush a high isolating strength & durable

EFS poly bushes have an elastomer rating of 80 Duro to give improved suppleness & grease channels for increased distribution of


Pins & Shackles

Engineered to be stronger than the original equipment & greaseable for ease of service. The EFS Pins & shackles are made from medium & high grade carbon steels then case hardened & gold cadmium plated or black oxided for increased strength & corrosion protection EFS offers standard replacements and a small range of anti-inversion std and extended shackles.

  • Engineered with increased strength
  • Greaseable for ease of maintenance
  • Case hardened & gold cadmium plated
  • Extended & standard anti-inversion shackles
  • 3 year / 100, 000 km warranty


Powder coasted for protection against corrosion & made from quality carbon steels with rolled threads to increase strength, due to a uniform grain finish.

Deep nuts are supplied for safety & strength with flat washers to provide a smooth contact surface area to reduce plate friction.

EFS have a vast variety of U-bolts on offer for most Makes and Models of 4wd’s. We also can custom bend U-Bolts to order.

Multi-fit Strut Top Spacer

The EFS Multi fit strut top spacer is made from high grade 6mm billet aluminum and CNC machined for a great fit and is also anodized black for a durable finish. This is designed to assist with height trimming of strut vehicles with an approximate lift of 10-12mm

Hilux Torque Rod

When raising a leaf sprung front Hilux an EFS Adjustable Torque Rod must be installed, this prevents preloading of the front suspension. because the

standard torque rod isn’t long enough, and will pull down the suspension. The EFS Torque Rod uses compliant rubber bushes for maximum articulation and is fully adjustable to suit heights up to 3 inches. This EFS product simply replaces the standard torque rod.

Hilux Drop Drag Link

The EFS Drop Drag Link centralises the Pitman Arm and maintains sufficient clearance from the drivers’ side u-bolts. The EFS Drop draglink simply replaces the original unit and is serviceable with grease nipples and is adjustable to allow for correct fitment.

Mazda Shock Support

The EFS Mazda Shock absorber support bracket reinforces the top chassis mount on your Mazda B2600, Ford Ran

ger, Ford Courier, Mazda Bravo from 1999 – current. This reinforcement bracket is required when after-market shock absorbers are fitted. This prevents chassis damage, due to the increased valve forces in aftermarket shock absorbers.

Castor Off-set Bush Kit

The EFS Castor Correction Bush Kit is designed to correct the pinion angle of the front differential in GQ-GU Nissan Patrols and 80-100 Series Toyota Landcruisers. When these vehicles are raised above standard height the pinion angle changes, this bush kit re-aligns the pinion angle and corrects the vehicles castor angle, this inturn improves high speed vehicle control and safety.

Coil Spring Spacers

The EFS Polyurethane Coil Spring Spacers are made from high grade durable polyurethane and are excellent for setting up your 4wd to that exact height. They are available in 10mm,15mm and 30mm thicknesses.

Extended Brake Lines

When considering lifting your 4wd there are other ancillary components that need altering or lengthening. One of the main components that need lengthening is brake lines.
EFS have extended replacement brake lines for your raised vehicle. These are high quality dual skin double crimped rubber flexible brake lines. All EFS brake lines are SAE J1401 approved.

Adjustable Panhard Rods

The EFS adjustable Panhard Rod corrects the lateral location of the diff and centralises the diff location. When a 4wd is lifted beyond a certain height the diff is pulled across by the standard panhard rod, EFS Panhard Rods are made from high strength steel with high performance polyurethane bushes.

Shock Boots

The EFS Shock Absorber Dust Boots enables extra protection from the elements for your shock absorbers piston shaft and seals.

IFS Cruiser Reinforcement Bracket

This EFS Bracket kit is designed to re-inforce the front lower control arm especially when aftermarket shock absorbers are used with increased dynamic forces.

Radius & Trailing Arm Bushes

If you’re looking at replacing the trailing arm bushes in your Nissan Patrol GQ/GU or 80/100 Series Toyota Landcruiser. Consider using EFS Long life Polyurethane replacement bushes. Designed to enhance the ride and feel of your 4wd vehicle.

Extended Sway bar links

When raising your 4wd above 3 inches consider using EFS extended Sway bar links. This enables your standard sway bars to be retained – even up to 5 inch lifts. These simply replace the standard link pins and have a height adjustable thread to customise the fitment. Supplied as a complete kit with all hardware and bushes included. To suit – GQ/GU Nissan Patrol – 80/100 Series Landcruiser

Castor Wedges

EFS manufacture a range of steel castor correction wedges to suit leaf sprung vehicles. When a leaf sprung vehicle is raised its castor angle is changed and a castor correction wedge enables you to correct the castor angle which is very important for safety and handling of the vehicle.

Hilux Gusset Kit

When replacing your front leaf springs in your Hilux the EFS gusset /spring seat kit will rectify your spring seats if the edges are rounded off and the surface is not flat. The dual tapered wedge will fill the void between the spring and the spring seat and the weld on gussets will reinforce the spring seats. If your vehicle spring seats are rounded off the springs will not achieve their required height.

Extended Shackles

EFS offers a range of greaseable extended shackles to suit Landcruiser, Hilux Patrols

Gear Box Spacer Kit

When raising a SWB GQ Patrol & XJ Jeep Cherokee above standard height the tail shaft angle causes vibrations through the vehicle.

By lowering the back of the gear box with the EFS Gearbox Spacer Kit the tail shaft angle is reduced. The kit consists of replacement bolts and the adjustment plates.

Adjustable Drag Link

The EFS Adjustable Draglink is designed to allow you to adjust the draglinks length. As a vehicles suspension is raised the draglink becomes more vertical and pulls the steering wheel to one side. On vehicles that are equipped with srs airbags you are unable to remove and adj the steering wheel. So by using the EFS adj Draglink this enables centralisation of the steering box and inturn centralises the steering wheel.

Steering Damper Bracket

The EFS Steering Damper Bracket enables you to retro fit a Pin/Pin configuration steering Damper to your 4wd. This bracket simply bolts from your draglink to your panhard rod.

Brake Bias adjustment

When raising a Toyota Landcruiser 79 series or hilux above standard height the rear brake bias needs to be adjusted, this allows for correct vehicle braking. This is simply done by either installing a spacer block or adjustable rod and spacing out the brake bias lever which brings the brake bias back to standard.

Castor Plates

When raising a Nissan Patrol GQ/GU or 80/100 Series Landcruiser above 4 inches the use of a castor correction bush kit becomes inadequate and does not adjust the castor enough. This is where castor plates are used which can achieve correct castor angles up to approx 7 inches of lift. EFS Castor Plate kits come powder coated to resist rust and include all mounting hardware.