Traction Control Bushes with Fitting Position Front Axle, Rear Axle

Traction control bushes are suspension bushes used at selected rear suspension, subframe or differential mounting points to help control unwanted movement under load. Depending on the suspension design, these bushes may be supplied individually or as part of a traction control bush kit designed to service particular mounting locations.

Despite the name, these are mechanical suspension components and should not be confused with the vehicle's electronic traction control system. Their exact function depends on where they are fitted, so identifying the relevant mounting point and diagnosing excessive movement are important before choosing replacement bushes.

What Are Traction Control Bushes?

Traction control bushes are used at mounting points where movement between suspension or driveline-related components needs to be managed while still allowing the articulation intended by the original design.

The term "traction control bushes" can cover different mounting locations depending on the suspension configuration. This can include bushes associated with a rear subframe or other mounting points that influence how components move relative to the vehicle body.

As loads change during acceleration, braking and cornering, forces are transferred through these mounting points. Serviceable bushes help maintain the intended relationship between the connected components while accommodating the movement required by the suspension design.

This makes traction control bushes different from electronic traction control. Electronic systems manage wheel slip through vehicle electronics, while suspension bushes are physical components that influence how parts of the suspension or mounting assembly are located and allowed to move.

How Subframe and Diff Movement Affects Rear Traction

In suspension layouts that use a rear subframe, the subframe provides mounting points for suspension and, in some configurations, driveline components. Bushes can be used between the subframe and body to isolate and control movement at these mounting locations.

Some suspension and driveline arrangements also incorporate differential mounting bushes. These perform a different mounting function from subframe bushes, even though both may be located in the same general area.

Under acceleration and changing loads, forces can cause movement through these mounting points. The amount and type of movement considered normal depends on the original suspension and mounting design.

If a bush becomes worn, damaged or develops excessive movement, the affected component may move more than intended. This is why diagnosis should identify the specific mounting point involved rather than assuming that all rear-end movement is caused by rear diff bushes, subframe bushes or another particular component.

Wheel Hop and Other Signs of Worn Traction Control Bushes

Wheel hop describes rapid repeated movement of a driven wheel or wheels as traction is gained and lost under acceleration. Suspension movement, tyre behaviour, road conditions and driveline characteristics can all contribute to wheel hop, so it should not automatically be attributed to a particular bush.

However, excessive movement at worn rear suspension, subframe or driveline mounting points can be one factor worth investigating when diagnosing unwanted movement under load.

Other reasons to have the relevant bushes and mounting points inspected can include:

• Knocking or clunking from the rear of the vehicle
• Excessive movement around a subframe or mounting point
• Visible cracking, tearing or deterioration of a bush
• Changes in rear suspension behaviour
• Unusual movement during acceleration or changes in load
• Vibration that requires further investigation

None of these symptoms confirms that a traction control bush has failed. Similar symptoms can originate from suspension joints, mounts, differential mounts and other components. A physical inspection is the most reliable way to locate excessive movement before deciding which parts require replacement.

Types of Traction Control Bush Kits

"Traction control bush kit" is a broad category description rather than a universal specification. The components and mounting positions serviced by a kit can vary considerably between suspension designs.

For this reason, the intended fitting position should always be checked rather than assuming that every traction control bush kit performs the same job.

Subframe Traction Control Bushing Kits

A subframe traction control bushing kit is intended to service particular bush locations associated with a subframe mounting arrangement.

Subframe bushes sit between major structural components and their mounting points. Their condition can influence how much movement occurs at that connection as forces pass through the suspension.

Rear subframe bush designs and mounting arrangements vary, so replacement components need to be selected for the specific application and bush position.

Rear Traction Kits

The term "rear traction kit" may be used for bush solutions intended to address selected mounting points at the rear of a vehicle. Exactly which bushes or mounting locations are involved depends on the application.

The name alone should therefore not be used to determine what a kit contains or which problem it is intended to address. Check the fitment information and included components for the specific product before purchasing.

This also helps distinguish traction control bush kits from general rear suspension bush replacement, where the objective may be to service different mounting points throughout the suspension.

Polyurethane or Rubber Traction Control Bushes?

Suspension bushes can be manufactured using different materials, including rubber and polyurethane. Material alone, however, does not determine whether a particular bush is suitable for a specific mounting point or intended use.

Rubber bushes are widely used in original suspension designs and can provide the compliance and isolation required by the application. Polyurethane can provide greater resistance to deformation than conventional rubber bush designs, which can help control unwanted movement at suspension, subframe or differential mounting points. Where excessive bush deflection can allow components to move under acceleration or changing loads, a suitably designed polyurethane bush can provide a more controlled mounting connection.

The correct choice depends on the application, mounting location, bush design and the characteristics required at that point in the suspension. Fitment should always take priority over choosing a replacement based solely on material.

Choosing the Right Traction Control Bush Kit

Choosing the correct traction control bush kit starts with identifying which mounting point requires servicing.

This is particularly important because terms such as subframe bushes, rear subframe bushes, diff bushes and diff mount bushes describe different components. Although they can operate within the same general area of the vehicle, they should not be treated as interchangeable terms.

If excessive movement has already been diagnosed at a specific mounting point, accurate fitment information can be used to identify the appropriate replacement bush or kit.

If the source of the problem is still uncertain, a suspension inspection is a better starting point. Checking the relevant bushes, mounting points and surrounding components can help determine whether unwanted movement is coming from a subframe bush, differential mounting point or another suspension component.

Fitting Traction Control Bushes and Wheel Alignment

Replacing traction control bushes can range from relatively straightforward bush replacement to work requiring substantial suspension disassembly. The procedure depends on where the bushes are located and how the suspension or subframe is mounted.

Some bushes may need to be pressed from their housings using workshop equipment. Where subframe mounting bushes are involved, additional components may also need to be supported or removed to provide access.

Correct installation is important because the replacement bush needs to be positioned and secured according to the requirements of the particular mounting arrangement.

Wheel alignment should also be considered following suspension work where components affecting wheel position or suspension geometry have been removed, loosened or repositioned. Whether alignment is required depends on the work performed and the suspension design rather than the traction control bush category alone.

Professional fitting can be particularly useful where diagnosis, specialist equipment or significant suspension disassembly is required.

Find Traction Control Bushes for Your Vehicle

Traction control bushes can refer to different rear suspension and mounting applications, making correct identification particularly important when shopping for replacements.

Start by confirming the mounting point that needs attention and use accurate fitment information to identify a suitable bush or kit. If you're investigating wheel hop, knocking, unwanted movement or another rear suspension concern without a confirmed diagnosis, inspecting the suspension before ordering can help avoid replacing the wrong component.

Fulcrum Suspensions can assist with suspension inspections, component identification and professional installation where required. Having the relevant subframe, suspension and mounting points assessed together can help locate excessive movement and determine which component actually requires attention.

By matching the replacement to the diagnosed mounting point rather than relying on symptoms alone, you can take a more accurate approach to servicing worn traction control bushes and related suspension components.