4×4 accessories

ATW have designed and developed a range of off road performance accessories for the 4×4 Japanese truck range. These include Isuzu, Mitsubishi / Fuso and Hino. When designed originally by the manufacturer these trucks essentially were developed for commercial applications. And although our builds are used in commercial and expedition/touring applications our accessories increase truck performance and incredibly improve ride quality on and off road.

Parabolic Springs

A Parabolic Spring is a spring that consists of two or more tapered leaves. Each leaf represents a complete spring in itself and will act as such. To enable this the leaf is tapered, from the centre (thick) to the outer ends (thin). This tapering is parabolic, which means that every centimetre (or inch) the thickness of the leaf decreases in amount that relates to the square function of it’s length. This is where the thickest part of the spring is mounted to the axle and tapers out to the ends of the spring that mount to the chassis. In between these two points the leaves do not touch each other as they do with conventional springs.This allows each leaf to perform individually rather then one pack of conventional springs.

The design of ATW springs increases the vehicle height around 40-50mm (1 1/2-2 inch) lift and will transform the ride from very harsh to a more comfortable, controlled ride. The parabolic springs are designed to bolt on to the existing spring mounts of the chassis. This means no drilling , cutting or grinding to mount the springs. The parabolic suspension upgrade kits are available for Isuzu and Mitsubishi / Fuso models that replace most, if not all of the OEM suspension components.

Depending on the exact model truck, kits include:

Parabolic springs, shock absorbers, grease able shackle mounts with urethane bushes, bump stops, ubolts, extended brake lines, extended ABS wiring, brake line extension mounts,extended sway bar links.

Koni Shocks with AirbagOztec Shocks with AirbagOztec Shock Aeon Bump Stops

Single Wheel Conversions

17″ Steel Rim Powdercoated17″ Steel Rim Powdercoated19.5 x 8.25 Alloy Rim19.5 x 8.25 6 stud Steel Rim 19.5 x 8.25 6 Stud Steel Rim19.5 x 8.25 5 Stud Steel Rim powdercoated19.5 x 8.25 5 Stud Steel Rim Powdercoated22.5″ Rims powdercoated22.5″ Rims powdercoated

ATW have developed a single wheel conversion that is simple yet extremely effective way to improve the ride, look and handling characteristics of a 4×4 truck. From factory all of the Japanese 4×4 truck chassis’ come out with dual rear wheels. This means you have 4 tyres on the rear axle and 2 tyres on the front. This is not ideal when traversing through sand, mud and rocky environments.

To enhance the capabilities on and off road the ATW single wheel conversion replaces the OEM wheels with ATW rims and tyres which are larger in diametre, wider in width and a larger load capacity. The rims have a offset suited to each vehicle manufacturer. This also gives the following benefits:


Radar Renegade Rugged TerrainBlack Bear Mud TerrainGladiator X-Comp All TerrainGoodride AT557 385/65R22.5TOYO M608Z 285/70R19.5GOODRIDE CM986 285/70R19.5

Tyre options for 17″ rims –

Radar Renegade Rugged Terrain 37×12.5 R17 – 1950kg Load Rating 

Gladiator X-comp All Terrain 37×13.5R17 131Q – 1950kg Load Rating

Black Bear Mud Terrain with Kevlar side wall 37×12.5 R17 131Q

Tyre options 19.5″ rims – 

TOYO M608Z 285/70R19.5, 2900kg Load Rating

GOODRIDE CM986 285/70R19.5, 3000kg load Rating

Tyre option 22.5″ rims –

Goodride AT557 385/65R22.5

ATW have Single Wheel Conversion kits available for a number of 4×4 trucks as listed below –


NPS300 2008 – 2014 @ 6000kg – 6500kg GVM

NPS 65/155 & 75/155 2015 to current @ 6500kg – 7500kg GVM

FSS500/600/FSS110-210 & FTS800/FTS139-260  CALL FOR INFO


FG637 @ 5500kg GVM

FG649 & FG84 @ 6000kg GVM

FGB71 @ 6500kg GVM


300 series 817 @ 7500kg GVM

500 series GT1322 CALL FOR INFO

 We are the only Single Wheel supplier that has both a certified 17” & 19.5” Rim available.

Our 19.5 x 8.25” rim is available in both Steel and Alloy. The Alloy rim allows a weight saving of 75kg on a set of 5 wheels. Rugged, yet very stylish and easy to clean.

The 17 x 9” Rim is available in steel, painted black.

All of our Rims either run dual valve stems or have been designed to use an extended valve for easy inflation from either side of the rim.

All of our rims are ISO tested and DOT approved.

17” Steel rim @ 1950kg               19.5” Steel rim @ 3000kg

19.5” Alloy rim @ 3150kg            22.5” Steel rim @ 4500kg

Auto Torque front Diff centre

Our ATB diff lock is fully automatic and progressive in operation. Unlike conventional diff locks and LSD’s , ATW’s will never lock but will seamlessly and progressively transfer power and torque away from a spinning wheel to the one with the most traction. This is the opposite action of an OEM ‘open’ diff which in soft or loose conditions will promote wheel spin and loss of drive. In off road situations, the ATB diff significantly reduces torque steer, under steer and steering ‘snatch’ associated with common clutched type LSD’s and air or electric diff locks.

When off-road, this translates into reduced wheel spin (improved tyre life), virtually no torque steer and less under steer during cornering (improved safety and control)…..most importantly, it will greatly enhance performance and drive in soft mud and sand, therefore reducing the chance of getting stuck and the need for recovery. If one wheel is lifted from the ground so that there is no torque bias, the diff will revert to the same operation as an open diff, however simply tapping the brakes will be enough to regain maximum torque to the opposite wheel still in contact with the ground.

The ATW Auto Torque Biasing (ATB) Helical Gear Limited Slip Differential (LSD) is a direct replacement for the front axle OEM factory ‘open’ differential centres on all Fuso FG Canters and Isuzu NPS.

Front Bullbar with winch

ATW Isuzu winch bull bar powdercoatedATW Hero barATW Hero winch barATW Hino Winch bar

ATW has developed a range of bullbars that suit various manufacturers and models. Our most popular is the winch bullbar which is set up to house a recovery winch at the front of the vehicle. The winch cradle is fabricated out of steel but the main Bullbar component is Aluminium, this helps to reduce the weight over the front axle while still very strong and durable. Where applicable all winch bars are tested and approved for fitment on airbag vehicles.

Rear winch/towbar

ATW has developed a rear winch bracket which also incorporates a towbar, in some cases this is rated to 4500kg towing if fitted with the correct hitch and hardware. The recovery winch is mounted behind the main section of the bar.

ATW Isuzu Rear Winch Bar

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