Suspension Upgrade Kits with Fitting Position Front and Rear for LEXUS LX LX500, 600 (J310)

A 4WD suspension upgrade kit groups several suspension components into one matched package for a specific vehicle, so worn or factory parts can be replaced or improved at the same time. Rather than tracking down bushes, mounts and hardware individually, an upgrade kit brings together the parts designed to work together on that vehicle. Contents vary between kits, so check the product details for exactly what is included. Use the vehicle search to find suspension upgrade kits to suit your LX500, 600 (J310) LX.

What's Included in a LX500, 600 (J310) LX Suspension Upgrade Kit?

It varies by kit. Suspension upgrade kits typically group several wear parts into one package, such as bushes for the control arms, radius arms, sway bars or leaf springs, along with mounts and sometimes alignment hardware. Some kits focus on one end of the vehicle, while front and rear kits cover the whole suspension.

The aim of a kit is to renew or improve the components that locate the suspension, so the vehicle's geometry and handling are restored as a whole rather than one part at a time. Because kits are designed for a specific vehicle, the parts are selected to suit its suspension layout. Always check the product listing for the exact contents of a kit, including which positions it covers and whether hardware such as bolts or washers is included.

Is a LX500, 600 (J310) LX Suspension Upgrade Kit the Same as a Lift Kit?

Not usually. A lift kit raises the vehicle's ride height, typically by replacing the springs and shock absorbers with taller or stiffer components, often with supporting hardware to suit the new height. Its main purpose is to increase ground clearance and make room for larger tyres.

A suspension upgrade kit generally refreshes or improves existing suspension components without changing ride height. It focuses on the parts that locate the suspension and control how it moves, such as bushes and mounts, rather than the springs and shocks that set height. Some packages combine both, pairing a lift with new bushes and correction parts, so check whether a kit changes ride height before ordering.

When Is a Full Kit Better Than Single Parts for Your LX500, 600 (J310) LX?

A full kit often makes sense when several components are worn at once. On a high-kilometre 4WD, particularly one that has spent years touring, towing or driving on corrugated roads, bushes throughout the suspension tend to wear at a similar rate. Replacing only the worst one leaves new parts working alongside tired ones, and the vehicle may not feel much better.

Replacing components together also saves labour. Much of the cost of suspension work is in access and alignment, so doing everything while the suspension is apart avoids repeated workshop visits and repeated wheel alignments. Individual replacement still suits vehicles with one isolated problem, such as a single torn bush or a failed mount, where the rest of the suspension is in good condition.

Signs Your LX500, 600 (J310) LX Could Benefit From a Suspension Refresh

A 4WD that is due for a suspension refresh often shows several symptoms at once. Common signs include clunks over bumps, a vague or wandering feel on the road, the vehicle feeling loose or unsettled when towing, and uneven tyre wear that returns soon after a wheel alignment. The ride may feel harsher or floatier than it used to, and the vehicle may feel less composed on rough roads.

When an inspection finds worn bushes or mounts in several positions, a matched kit can address them together. Other worn components, such as shock absorbers, springs, ball joints and steering parts, can produce similar symptoms, so have the whole suspension and steering checked to understand what needs replacing.

Why Suspension Components Wear Faster on Your LX500, 600 (J310) LX

4WD suspension works harder than the suspension on a typical road car. Heavy loads from accessories, touring gear and tow ball download keep bushes under constant pressure. Corrugated roads put thousands of small movements through every pivot on long trips, while off-road articulation pushes the suspension through its full range of movement.

Water crossings, mud, beach driving and dust also take their toll, washing out lubrication and carrying abrasive grit into bushes and joints. As a result, a 4WD's suspension components can reach the end of their life sooner than the kilometres alone suggest, which is why a complete refresh is often worth considering on an older or hard-working vehicle.

Will an Upgrade Kit Help Your LX500, 600 (J310) LX With Towing and Touring?

It may improve control and stability if worn suspension components are the cause of the problem. Fresh bushes and mounts locate the suspension more accurately, which can reduce movement, sway and vagueness when towing a caravan or carrying a heavy touring load.

An upgrade kit does not change how much the vehicle can legally carry. Payload and towing limits are set by the vehicle's gross vehicle mass, gross combination mass and towing ratings, and suspension components do not raise them. If the vehicle regularly carries close to its limits, an approved and certified GVM or GCM upgrade is the relevant option. If springs are sagging under the load, they may need replacing as well as the bushes.

Choosing Between Rubber and Polyurethane Components for Your LX500, 600 (J310) LX

Many upgrade kits use polyurethane bushes in place of the factory rubber. Polyurethane bush makers generally state that polyurethane resists wear and deformation better than rubber, so it holds suspension components in position more consistently under load. The trade-off is that a firmer bush can transmit more road noise and vibration into the cabin.

For a touring or towing 4WD that spends time on rough roads, longer-lasting and more precise location is often the priority. For a vehicle used mainly for daily driving, the quieter ride of rubber may matter more. Check which materials a kit uses before ordering.

Does Your LX500, 600 (J310) LX Need an Alignment After Fitting?

Generally, yes. Replacing suspension bushes, mounts or arms can change camber, caster and toe, even when the new parts are the same dimensions as the old ones, because worn parts let the suspension sit in a slightly different position. A wheel alignment after fitting an upgrade kit sets the geometry correctly with the new components in place and helps prevent uneven tyre wear. Have the alignment done with the vehicle at its normal ride height and carrying its usual accessories, so the settings reflect how it is actually driven.

Fitting a LX500, 600 (J310) LX Suspension Upgrade Kit: An Overview

Some parts in an upgrade kit are straightforward to fit, but a full kit often involves pressing bushes out of their housings and pressing new ones in, which requires suitable press tooling. Bolts passing through bushes generally need to be tightened with the vehicle at normal ride height, so the bushes are not preloaded. All fasteners must be tightened to the manufacturer's torque specifications. Because a full kit touches many suspension components and needs an alignment afterwards, professional installation is recommended. Recheck the suspension fasteners after the first few hundred kilometres, once the new components have settled.

Get the Right LX500, 600 (J310) LX Suspension Upgrade Kit with Formula 4x4

Upgrade kits bring together the parts a hard-working 4WD needs, all drawn from our suspension parts range.

Start by having the suspension inspected to see which components are worn, and decide whether you need a refresh, a lift or both. Check the contents of any kit against your vehicle's needs. Search by your LX500, 600 (J310) LX to find suspension upgrade kits to suit your LX500, 600 (J310) LX. If you are unsure what your 4WD needs, contact the Formula 4x4 team.