Chassis Parts with Fitting Position Rear Axle

Upgrade key structural, mounting and suspension-related areas of your vehicle with Whiteline chassis parts. Designed for performance cars, road cars and selected 4WD applications, these components cover several different functions, from chassis bracing that reduces structural flex to polyurethane body mount bushes and supporting components for modified 4WD suspension setups.

Chassis parts don't all perform the same job, so the right upgrade depends on the vehicle and what you're trying to address. Chassis braces can reinforce specific structural areas to support more consistent suspension geometry, while body mount bushes connect the body and chassis on compatible vehicles. Other application-specific components address changes created by suspension lifts, including headlight sensor positioning and tailshaft operation.

Car Chassis Parts

A vehicle chassis provides the structural foundation around which the suspension, steering, body and drivetrain operate. The exact construction varies considerably between vehicles, which means the term car chassis parts can cover several types of components rather than one particular suspension part.

For performance applications, chassis bracing is used to reinforce selected areas where unwanted flex can affect how suspension loads are transferred through the vehicle. On vehicles with separate body and frame structures, body mount bushes provide the connection between those assemblies. Other chassis-related components can support specific systems affected when suspension height is changed.

This page is focused on automotive and performance chassis components rather than trailer, caravan or truck chassis hardware.

Chassis Bracing

Chassis bracing reinforces selected structural points to reduce unwanted flex under suspension and cornering loads. Whiteline's chassis-bracing product information states that reducing body or chassis flex helps maintain alignment angles and spring rates, allowing suspension components to work from a more consistent structural platform.

Strut Tower Braces

A strut tower brace, also called a strut brace or strut bar, connects structural points around the suspension towers. Its purpose is to increase rigidity between those mounting areas and reduce relative movement as loads pass through the suspension and chassis.

Whiteline attributes improved turn-in, sharper steering response and greater steering feedback to its chassis-bracing applications. These benefits come from reducing unwanted structural movement rather than changing the wheel alignment or spring rate itself. The brace helps the existing suspension operate from a more consistent platform.

Front and rear braces are available for different applications, and their mounting arrangements vary. A front strut brace and rear strut brace therefore shouldn't be assumed to produce identical changes on every vehicle because chassis construction, suspension design and existing rigidity all influence the result.

Chassis Support Braces

Chassis reinforcement isn't limited to the strut towers. Application-specific support braces can reinforce areas around suspension mounting points such as control arm or anti roll bar mounts, where reducing unwanted movement can help maintain a more consistent relationship between the suspension and chassis.

The appropriate brace depends on where reinforcement is required on the particular vehicle. Rather than treating every chassis brace as interchangeable, choose components designed for the relevant mounting points and confirmed vehicle application.

Body Mount Bushes

Body mount bushes are used on vehicles where the body is mounted to a separate frame or chassis through dedicated mounting points. These bushes provide a connection between the two structures while still allowing a controlled degree of isolation and movement.

Original rubber body mounts can deteriorate, compress or soften with age. When this occurs, additional movement may develop between the body and chassis. Possible symptoms can include movement or noise around mounting areas, but these symptoms can also be caused by other worn components, loose hardware or structural issues, so inspection is important before diagnosing the bushes.

Whiteline body mount bushes use polyurethane as an alternative to the original rubber mounting material on compatible applications. Polyurethane can provide a firmer and more consistent mounting relationship, but a firmer material can also transmit more noise, vibration or harshness than a softer rubber mount depending on the application and vehicle. That trade-off should be considered when choosing replacement body mounts, particularly where ride refinement is a priority.

Door Jamb Bushes

Door jamb bushes are a separate chassis-parts category designed for selected applications. They shouldn't be confused with body mount bushes, suspension bushes or door seals, as they occupy a different location and perform an application-specific function around the door jamb assembly.

Because the exact arrangement varies by vehicle, choose door jamb bushes according to confirmed fitment rather than assuming they are a universal chassis-stiffening component.

Chassis Parts for Lifted 4WDs

Increasing 4WD ride height can affect components beyond the springs and shock absorbers. Depending on the vehicle and amount of lift, changes in suspension position can affect driveline geometry, headlight levelling systems, brake-related components and other systems connected to suspension movement.

Whiteline chassis parts for lifted applications include components designed to address specific changes created by the new ride height. These parts should be selected according to the requirements of the individual vehicle rather than treated as mandatory additions to every lift.

Tailshaft Spacers

A tailshaft spacer is used on selected lifted 4WD applications where the change in ride height affects the operating relationship of the tailshaft and driveline. Whiteline's application notes describe these spacers as a way to correct tailshaft positioning after a suspension lift and help address driveline vibration on compatible vehicles.

A tailshaft spacer isn't required for every lifted 4WD, and driveline vibration can have other causes, including worn joints, damaged components, imbalance or other driveline geometry issues. If vibration appears after a suspension modification, the cause should be properly diagnosed before assuming a spacer is the solution.

Headlight Sensor Brackets

Some vehicles use suspension-linked height sensors as part of their automatic headlight levelling system. When suspension ride height changes, the relationship between the sensor and suspension can also change, which can affect the position from which the system operates.

A headlight sensor bracket provides an application-specific mounting solution where the sensor position needs to be addressed after a suspension modification. It should not be described as automatically guaranteeing safe or compliant headlight performance because the complete lighting system still needs to operate and be adjusted correctly.

Chassis Bush Wear

Worn body or chassis-related bushes can allow more movement at their mounting points, but symptoms alone aren't enough to identify a failed bush. Clunks, rattles, movement or changes in vehicle feel can also come from suspension bushes, ball joints, mounts, loose hardware, shock absorbers or other chassis and suspension components.

Visual inspection can help identify cracking, deterioration, deformation or excessive movement around a bush or mounting point. Where the cause isn't clear, have the chassis and suspension inspected by a qualified technician rather than replacing components based solely on a noise or handling symptom.

This is particularly important when several suspension or chassis components are being upgraded at the same time. Identifying existing wear before installation gives you a clearer baseline and helps avoid expecting a new chassis component to correct an unrelated fault.

Chassis Part Installation

Installation requirements vary significantly across car chassis parts. Some bushes require specialised removal and pressing procedures, while braces may bolt to existing mounting locations or require additional installation work depending on the application. Several Whiteline chassis-bracing applications specifically note that drilling is required, so installation shouldn't be assumed to be a simple bolt-on job.

Correct mounting and tightening procedures matter because these components work around structural and suspension attachment points. If drilling, bush removal, vehicle support or other unfamiliar work is required, professional installation is the more appropriate option.

For lifted 4WDs, chassis-related components also need to be considered as part of the overall modification. Ride-height changes can affect other systems, including brake lines, ABS wiring, handbrake cables and CV shaft operating angles. Check the complete setup rather than considering each modification in isolation, and confirm the current modification requirements that apply where the vehicle is registered.

Chassis Parts with Whiteline

Shop car chassis parts with Whiteline for performance chassis bracing, body mounting solutions and application-specific components for selected suspension and 4WD modifications. Use our vehicle or registration search to identify compatible parts before ordering, as fitment, position and installation requirements vary between applications.

Every Whiteline component is backed by our warranty, Fitment Guarantee and 30 Day Returns, giving you added confidence when choosing the right chassis components for your vehicle.

Lowered or lifted? Headlight sensor brackets keep auto-levelling headlights aimed correctly.

If you're unsure whether you need a chassis brace, replacement mount bushes or supporting components for a modified suspension setup, contact our team for help identifying the correct parts and installation requirements.