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Welcome to Jmacx

Australia’s leading suspension specialists for the Toyota Landcruiser and the innovators of the bolt in coil conversion , we have you covered from leaf to coil suspension true GVM options from 3900 to 6000 and legal lift of up to 4 inches and 35 inch tyres , have a look through our website to find a product that best suits you.

LC70 Series 3900 GVM Coil Conversion

The Jmacx 3900 GVM bolt in coil conversion is the world’s number one trusted bolt in coil conversion on the market and is the industry leader here’s why, with hundreds of conversions done and millions of combined kms driven in some of the worlds harshest condition this kit is fully engineered to go above and beyond. Also giving you a GVM upgrade of 3900 this is the ultimate suspension upgrade for outback tourers, commercial vehicles and the weekend warrior. Tested and proven in some off the world’s harshest conditions.

  • all Jmacx bolt in coil conversion can be done *PRE AND POST REGO* in all states
  • all Jmacx bolt in coil conversion can have up to 4inch of lift and 35inch tyres
  • with this Jmacx bolt in coil conversion you get a:
  • Increase GVM to 3900kg
  • Maintain BTC of 3500kg at full 3900 GVM
  • Axle load increase to 2700kg                                                                            ⇓  read down  ⇓
  • SSM Number:48554 (visit rvcs website to confirm Specs)

All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today.

Frequently Asked Questions

WHY DID JMACX CHOOSE THE 5 LINK SUSPENSION SYSTEM:

When it came to choosing and engineering a replacement rear suspension system for the 70 series Landcruiser there was a few different geometry’s to build off but only one was superior from all of them and this was the 5 link set-up.

The 5 link suspension system has been used by all Major vehicle companies for many years now for example 80/100/105 series landcruiser , Nissan NP300 and Patrol GQ/GU , Dodge Ram , meaning it has been tested and proven itself as a capable geometry set-up .

The biggest advantage to the 5 link suspension set-up is its load carrying ability from the REAR PANHARD ( the 5th link ) this allows the rear differential to stay fixed and stabilised when cornering or with any side load on the vehicle , without this rear Panhard the differential would be able to move freely side to side from the chassis this would be suitable for light vehicles with low centre of gravity , rock crawling 4wd or a drag car that needs to only go in a straight line .

However when it comes to a heavy load carrying vehicle this would not be safe as it would not be able to support the side load on the suspension set-up hence where the 5 link came out on top the 70 series is a load carrying vehicle with a high centre of gravity so the rear Panhard is a must to keep the suspension centred.

coil conversion 3900coil conversion 3900

WHY JMACX DIDN’T CHOSE THE 4 LINK SUSPENSION SYSTEM:

The 4 link Suspension system was another common geometry set-up that we looked at in the beginning however it had some major draw backs we it came to applying it on a 70 series land cruiser. Here is why Referencing straight from the BOSCH Automotive Engineering Handbook Version 7 – 9 on what is needed”

‘’The basis of what is considered appropriate is based upon stability and other kinematic effects on the road handling of the vehicle.

4 link suspension system are acceptable in the correct circumstances and with the correct application of the engineering to ensure stability of the systems.

The basic 4 link suspension system is designed for certain applications which are generally of high articulation applications ( Rock Crawling off-road vehicles , high monster truck types, performance cars , hotrods or very rigid suspension applications).

 

 

coil conversion

 

 

The following are the critical design aspects for 4 link systems.

  • Link lengths
  • Instant centre (intersection point)
  • Anti-squat geometry percentage
  • Axle angle change

Note: Intersection Point is a very important aspect and provides the balance to the system.

With regards to running the 4 link setup on a 70 series land cruiser, it is not possible to run triangulated lower control arms as the diff centre is not centralised meaning you would have to use straight lower control arms this setup is far from ideal for a road going vehicle. The system should ideally be a double triangulated setup with both upper and lower control arms at opposing angels to ensure that the system can be centred at all times.

With a straight lower control arm, the axle housing is able to laterally traverse under heavy load cornering, or indeed towing (ie: will try and maintain its original track and then dynamically release to follow the vehicle and as such causes a significant amount of instability and can be catastrophic if coupled with a incorrectly loaded trailer ).

The images provided are considered an appropriate system with a double triangulated setup,

 

 Does the Kit Contain Parts that are Custom and Maybe Difficult to find if in the middle of Nowhere?

  • Our diffs maintain all factory brakes, hubs, bearings, seals, diff lockers etc.
  • Our Coil Kit uses factory length Landcruiser control arms, Panhard.
  • Most parts maintain OEM Toyota bushes, so parts can be easily accessible anywhere in the world.

What if I Break an Axle?

  • Our diff housings are full fabricated units that exceed the strength of the factory original unit. JMACX Axles are the strongest production manufactured axle for Toyota Landcruiser available.

How Long will Jmacx need my vehicle for?

  • The Conversion will take around 7 working days depending on what accessories are being fitted to the vehicle .

 Does the new wide track diff correct the rear vehicle track?

  • Yes

Can i have a Custom Colour?

Yes, automatically our kits are a standard black.

But let us know and we can give you a custom colour to suit you!

We often see customers selecting a colour that represents their business 

Will It Affect my Insurance?

No, but it is up to each individual to check with their insurer. (Generally Insures only require the vehicle to be Legal.) 

 

 

 

LC70 Series 3900 GVM Leaf Spring

Jmacx now has a leaf sprung gvm option for the landcruiser that ticks all the boxes. track correction, higher axle load capacity, improved braking, vehicle stability. All though the leaf spring kits can’t compare to the ride comfort of a coil conversion they are a great option for those who want to stay with the leaf springs and need a true and usable 3900 GVM upgrade kit. Here are some key points as to what you can get from a Jmacx 3900 leaf kit.

  • Increase GVM to 3900kg
  • Maintain BTC of 3500kg at full 3900 GVM
  • Axle load increase to 2700kg
  • This kit can come with either 300kg  or  300kg – 500kg leaf packs

The biggest advantage to the Jmacx 3900 leaf kit is the high rear axle load capacity of 2700kg this combined with the GVM upgrade allows your landcruiser to be loaded practically in the rear to its full potential.   

All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx 3900 leaf kit use the kit builder bellow to get a quote today.

LC200 Series 4000 GVM

Looking for a GVM upgrade on your LC200 series? We have you covered with the 4000GVM kit from AEV this kit can be done *PRE and POST REGO* in all states with 2inch’s of lift. Your vehicle will only be able to have a maximum seating capacity of 5. To check the specs on this kit please(visit rcvs website)

LC70 Series 4200 GVM Coil Conversion

The Jmacx 4200 GVM bolt in coil conversion is the world’s number one trusted bolt in coil conversion on the market and is the industry leader here’s why, with hundreds of conversions done and millions of combined kms driven in some of the world’s harshest condition this kit is fully engineered to go above and beyond. Also giving you a GVM upgrade of 4200 this is the ultimate suspension upgrade for outback tourers, commercial vehicles and the weekend warrior. Tested and proven in some off the world’s harshest conditions.

  • all Jmacx bolt in coil conversion can be done *PRE AND POST REGO* in all states
  • all Jmacx bolt in coil conversion can have up to 4inch of lift and 35inch tyres
  • with this Jmacx bolt in coil conversion you get a:
  • Increase GVM to 4200kg
  • Maintain BTC of 3500kg
  • Axle load increase to 2700kg
  • SSM Number:48554 (visit rvcs website to confirm Specs)
All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today .

Frequently Asked Questions

 Does the Kit Contain Parts that are Custom and Maybe Difficult to find if in the middle of Nowhere?

  • Our diffs maintain all factory brakes, hubs, bearings, seals, diff lockers etc.
  • Our Coil Kit uses factory length Landcruiser control arms, Panhard.
  • Most parts maintain OEM Toyota bushes, so parts can be easily accessible anywhere in the world.

What if I Break an Axle?

  • Our diff housings are full fabricated units that exceed the strength of the factory original unit. JMACX Axles are the strongest production manufactured axle for Toyota Landcruiser available.

How Long will Jmacx need my vehicle for?

  • The Conversion will take around 7 working days depending on what accessories are being fitted to the vehicle.

 Does the new wide track diff correct the rear vehicle track?

  • Yes

Can i have a Custom Colour?

Yes, automatically our kits are a standard black.

But let us know and we can give you a custom colour to suit you!

We often see customers selecting a colour that represents their business 

Will It Affect my Insurance?

No, but it is up to each individual to check with their insurer. (Generally Insures only require the vehicle to be Legal.) 

 

 

 

LC70 Series 4200 GVM Leaf Spring

Jmacx now has a gvm option for the leaf sprung vehicles that ticks all the boxes. track correction, correct high axle load capacity, improved braking, vehicle stability .All though the leaf spring kits can’t compare to the ride comfort of a coil conversion they are a great option for those who want to stay with the leaf springs and need a true GVM upgrade. Here are some key points as to what you can get from a Jmacx 4200gvm leaf kit.

  • Increase GVM to 4200kg
  • Maintain BTC of 3500kg at full 4200 GVM
  • Axle load increase to 2700kg

The biggest advantage to the Jmacx 4200 leaf kit is the high rear axle load capacity of 2700kg this combined with the GVM upgrade allows your landcruiser to be loaded practically in the rear to its full potential.   

All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx 4200 leaf kit use the kit builder bellow to get a quote today.

LC200 Series 4200 GVM

Looking for a GVM upgrade on your LC200 series? We have you covered with the 4200GVM kit from AEV this kit can be done *PRE and POST REGO* in all states with 2inch’s of lift. Your vehicle will only be able to have a maximum seating capacity of 5. To check the specs on this kit please visit rcvs website.

LC79 Series 4495 GVM Coil Conversion

The Jmacx 4495 super chassis kit has taken the landcruiser to a whole new level, now giving you the highest GVM on a light vehicle licence also with a tow increase to 4000kg , and the best part is this is all done on coil suspension allowing the vehicle to still drive and ride like a dream.     
Here is some key points as to what you can get from a Jmacx track corrected coil conversion.
  • Jmacx 4495 chassis coil conversion can be done *PRE AND POST REGO* in most states
  • Jmacx 4495 chassis coil conversion can have up to 4inch of lift and 35inch tyres
  • Jmacx 4495 chassis coil conversion has an integrated 300mm stretch and bracing kit 
  • Integrated tow hitch and built in winch cradle.
  • with this Jmacx coil conversion you get a:
  • Increase GVM to 4495kg
  • Increase BTC to 4000kg
  • Increase GCM to 7995kg
  • Axle load increase to 2850kg
  • SSM Number:49983 (visit rcvs website to confirm Specs)
All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today .

LC200 SERIES 4495 GVM CONVERSION

The AEV 4495 LC200 super chassis kit has taken the landcruiser to a whole new level, now giving you the highest GVM on a light vehicle licence with a tow increase also to 4500kg.with the highest quality cab chop done at AEV making your vehicle look like it rolled off the factory floor that way. Here are some key points as to what you can get from n AEV 4495 super chassis kit.

  • AEV 4495 super chassis kit can be done *PRE AND POST REGO*
  • AEV 4495 super chassis kit has an integrated 650mm stretch and bracing kit 
  • Integrated tow hitch and built in winch cradle.
  • with this AEV 4495 super chassis conversion you get a:
  • Increase GVM to 4495kg
  • Increase BTC to 4500kg
  • Increase GCM to 8995kg
  • Axle load increase to 3000kg
  • SSM Number:49981(visit rcvs website to confirm specs)

For more information or to get a quote on the Lc200 Series landcruiser 4495 system please click on the link below to get in contact with Australian expedition vehicles and they will be able to assist you with your enquiry.

Visit Australian Expedition Vehicles 

LC79 Series 4495 GVM 6×6 Coil Conversion

The JMACX 4495 6 Wheel Drive triple locked LC79 super chassis kit has taken the Landcruiser to a whole new level, now giving you the highest GVM on a light vehicle licence with a tow increase also to 4495kg and the best part is this is all done on coil suspension allowing the vehicle to still drive and ride like a dream. Here are some key points as to what you can get from a Jmacx track corrected coil conversion.

  • Jmacx 4495 super chassis coil conversion can be done *PRE AND POST REGO* in all states
  • Jmacx 4495 super chassis coil conversion can have up to 4inch of lift and 35inch tyres
  • Jmacx 4495 super chassis coil conversion has an integrated chassis stretch and bracing kit 
  • Integrated tow hitch and built in winch cradle.
  • with this Jmacx super chassis coil conversion you get a:
  • Increase GVM to 4495kg
  • Increase BTC to 4500kg
  • Increase GCM  to 8990kg
  • Axles load rating to 2800kg each
  • Vehicle chassis length extended by 1000mm overall
  • SSM Number:49655(visit rcvs website to confirm specs)

All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today.

 

this system can be fitted at :

visit Australian expedition vehicles

visit JMACX OFFROAD SOLUTIONS

visit Boss Aluminium

visit Swank Fabrication 

If you are a overseas customer please contact:

visit tough gear trading

Frequently Asked Questions

 

Is this a self installation kit ?

No, JMACX 6×6 will only Supply to a JMACX and Australian Patrol Vehicles (AEV) Approved workshop.

 

How Long is a JMACX ?

  • JMACX 79 Series 6×6
  • 6200mm (2400 Tray)
  • 6600mm (2800 Tray)

 

  • AEV/JMACX 200 Series 6×6
  • 7.2 Mtrs

What does a 6×6 Weigh ?

  • JMACX 6×6 79 Series
  • A JMACX 6×6 79 Series Weighs Appox 350kg Heavier than the factory Tare Weight.

  • AEV/JMACX 200 Series 6×6

  • Approx 2750kg

Can this be approved in all States ?

  • Yes, all States.

What is the Maximum Tyre & Lift Height Available ?

  • 4 inch Lift Max
  • 35 inch Tyres Max

Can I Have Lockers ?

  • Standard GXL comes with Factory Front & Rear Electric Lockers.
  • JMACX 6×6 System is supplied with a Locker

 

Is JMACX 6×6 Chassis Cut & Extended ?

  • No, JMACX Fabricate a Complete Chassis Section to Replace the existing rear assembly to increase chassis strength.

What is the Fuel Economy like ?

  • Two tests on comparable vehicles 6 Wheel Drive and 4×4 with the same tyre size, similar tuning, similar towing weights & loaded up for touring The 6×6 was 1 litre per 100KS Heavier on Fuel Consumption.

 

 

 

 

 

LC200 series 4495 GVM 6×6 Coil Conversion

The AEV 4495 6X6 triple locked LC200 super chassis kit has taken the Landcruiser to a whole new level, now giving you the highest GVM on a light vehicle licence with a tow increase also to 4495kg with the highest quality cab chop done at AEV making your vehicle look like it rolled off the factory floor that way. Here are some key points as to what you can get from a AEV kit.

  • AEV 4495 super chassis conversion can be done *PRE AND POST REGO* in all states
  • AEV 4495 super chassis conversion can have up to 2inch
  • AEV 4495 super chassis conversion has an integrated 650mm stretch and bracing kit 
  • Integrated tow hitch and built in winch cradle.
  • with this AEV super chassis conversion you get a:
  • Increase GVM to 4495kg
  • Increase BTC to 4500kg
  • Increase GCM to 8990kg
  • Axles load rating to 2800kg each
  • Vehicle chassis length extended by 1650mm overall 
  • SSM Number:50056(visit rcvs website to confirm specs)                                                                                                                                                   

For more information or to get a quote on the 200 Series landcruiser 6×6 system please click on the link below to get in contact with Australian expedition vehicles and they will be able to assist you with your enquiry.

Visit Australian Expedition Vehicles 

LC79 Series 5800 GVM 6×6 Coil Conversion

The Jmacx 5800 6X6 triple locked LC79 super chassis kit has taken the Landcruiser to a whole new level, giving you one of the highest GVM’s with a tow increase also to 4500kg and the best part is this is all done on coil suspension allowing the vehicle to still drive and ride like a dream.Here are some key points as to what you can get from a Jmacx track corrected coil conversion.

  • Jmacx 5800 super chassis coil conversion can be done *PRE AND POST REGO* in all states
  • Jmacx 5800 super chassis coil conversion can have up to 4inch of lift and 35inch tyres
  • Jmacx 5800 super chassis coil conversion has an integrated chassis stretch and bracing kit 
  • Integrated tow hitch and built in winch cradle.
  • with this Jmacx super chassis coil conversion you get a:
  • Increase GVM to 5800kg
  • Increase BTC to 4500kg
  • Increase GCM to 10300kg
  • Axles load rating to 2800kg each
  • Vehicle chassis length extended by 1000mm overall
  • SSM Number:49954(visit rcvs website to confirm specs)
All Jmacx products have full engineering to ensure you are safe and legal on Australian roads. To see what comes in your Jmacx bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today .

 

this system can be fitted at :

visit Australian expedition vehicles

visit JMACX OFFROAD SOLUTIONS

visit Boss Aluminium

visit Swank Fabrication 

If you are a overseas customer please contact:

visit tough gear trading

Frequently Asked Questions

 

Is this a self installation kit ?

No, JMACX 6×6 will only Supply to a JMACX and Australian Patrol Vehicles (AEV) Approved workshop.

 

How Long is a JMACX ?

  • JMACX 79 Series 6×6
  • 6200mm (2400 Tray)
  • 6600mm (2800 Tray)

 

  • AEV/JMACX 200 Series 6×6
  • 7.2 Mtrs

What does a 6×6 Weigh ?

  • JMACX 6×6 79 Series
  • A JMACX 6×6 79 Series Weighs Appox 350kg Heavier than the factory Tare Weight.

  • AEV/JMACX 200 Series 6×6

  • Approx 2750kg

Can this be approved in all States ?

  • Yes, all States.

What is the Maximum Tyre & Lift Height Available ?

  • 4 inch Lift Max
  • 35 inch Tyres Max

Can I Have Lockers ?

  • Standard GXL comes with Factory Front & Rear Electric Lockers.
  • JMACX 6×6 System is supplied with a Locker

 

Is JMACX 6×6 Chassis Cut & Extended ?

  • No, JMACX Fabricate a Complete Chassis Section to Replace the existing rear assembly to increase chassis strength.

What is the Fuel Economy like ?

  • Two tests on comparable vehicles 6×6 and 4×4 with the same tyre size, similar tuning, similar towing weights & loaded up for touring The 6×6 was 1 litre per 100KS Heavier on Fuel Consumption.

 

 

LC200 series 6000 GVM 6×6 Coil Conversion

The AEV 6000 6X6 triple locked LC200 super chassis kit has taken the Landcruiser to a whole new level, now giving you the highest GVM and a tow increase to 4500kg with the highest quality cab chop done at AEV making your vehicle look like it rolled off the factory floor that way. Here are some key points as to what you can get from a AEV kit.     

  • AEV 6000 super chassis conversion can be done *PRE AND POST REGO* in all states
  • AEV 6000 super chassis conversion can have up to 2inch of lift
  • AEV 6000 super chassis conversion has an integrated 650mm stretch and bracing kit 
  • Integrated tow hitch and built in winch cradle.
  • with this AEV super chassis conversion you get a:
  • Increase GVM to 6000kg
  • Increase BTC to 4500kg
  • Increase GCM to 10495kg
  • Axles load rating to 2800kg each
  • Vehicle chassis length extended by 1650mm overall
  • SSM Number:49969 (visit rcvs website to confirm specs)

For more information or to get a quote on the 200 Series landcruiser 6×6 system please click on the link below to get in contact with Australian expedition vehicles and they will be able to assist you with your enquiry.

Visit Australian Expedition Vehicles 

BASIC COIL KIT

The Jmacx bolt in coil conversion is superior to any other conversion on the market it has been the industry leader and is fully engineered to go above and beyond .This basic coil conversion kit is for overseas and Pre ESC (electronic stability control) vehicles only, for all other vehicles please view our GVM coil conversion kits and find one that best suits your needs.
 
All Jmacx products have full engineering to ensure you are safe and legal on your roads. To see what comes in your Jmacx bolt in coil conversion please watch the video and then use the kit builder bellow to get a quote today .

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