Whiteline | Rear Subframe Bushing Insert Kit | GT/GR 86 & BRZ I & II

Less movement in the rear subframe for more direct handling

With the Whiteline rear subframe bushing inserts KDT922, you can specifically reduce the movement of the rear subframe without having to completely remove the factory bushings.

The inserts complement the existing bushings by filling their structural voids. As a result, the rear subframe is better supported under load, allowing for a more direct response, particularly when cornering, during load changes, and while accelerating.

How do the bushing inserts work?

The factory rear subframe bushings are intentionally designed to be compliant. While this contributes to ride comfort, it also allows a certain amount of subframe movement under load.

The Whiteline KDT922 inserts fill the existing voids in the original bushings and thereby limit this movement.

Important: The factory bushings remain completely intact. This is not a replacement of the original bushings, but a targeted enhancement of their design.

A noticeable difference while driving

Due to the firmer guidance of the rear subframe, the vehicle can feel more direct, especially when driving in a sporty manner.

Possible effects include:

• more direct rear-end response

• more precise cornering behavior

• less movement of the rear subframe under load

• more direct response when accelerating out of corners

• more predictable reactions during load transitions

The extent to which the difference is perceived depends on the specific vehicle and its further suspension setup.

Practical experience

Field reports on this concept predominantly describe a firmer and more direct behavior of the rear of the vehicle.

At the same time, the reduced compliance can result in more mechanical noise and vibrations being transmitted into the cabin. How noticeable this effect is depends, among other things, on any already installed stiffer engine, transmission, or differential mounts.

As such, the KDT922 is primarily aimed at drivers who prefer a more direct connection of the rear subframe over maximum ride comfort.

For sporty road vehicles and track cars

The KDT922 is of particular interest for:

• sportily driven road vehicles

• vehicles with modified suspension

• vehicles with performance upgrades

• track and circuit use

• drivers who prefer a more direct rear axle

For a largely stock vehicle, however, it should be kept in mind that the firmer connection can also transmit additional mechanical feedback.

Installation and wheel alignment

The inserts are integrated into the existing factory bushings. A complete removal and replacement of the original bushings is therefore not necessary.

Whiteline estimates an installation time of around four hours for the KDT922 and recommends that the installation be carried out by a suspension specialist. A wheel alignment is also recommended after installation.

The actual labor time may vary depending on the vehicle and existing modifications.

Whiteline KDT922 – targeted reinforcement of the rear subframe

The KDT922 is an interesting solution for anyone wanting to reduce rear subframe movement without replacing the factory bushings with much harder alternatives.

The design specifically modifies the compliance of the existing bushings, thereby ensuring a more firmly guided rear axle connection.

Your benefits

• Original Whiteline product

• Whiteline KDT922 rear subframe bushing inserts
  

• Factory bushings are retained

• No complete replacement of rear subframe bushings

• Reduces rear subframe movement under load

• More direct rear axle handling

• Interesting for sporty driving and track use

• Can improve response when accelerating

• Additional noise and vibrations may occur depending on the vehicle

• Wheel alignment is recommended after installation

GreenFuchs Conclusion

The Whiteline rear subframe bushing inserts KDT922 offer a targeted way to improve the guidance of the rear subframe without completely replacing the stock bushings.

By filling their existing voids, movement under load is reduced. This can provide a more direct and precise feel at the rear axle, especially during spirited driving.

Those who prioritize maximum ride comfort should, however, consider the potential increase in mechanical noise and vibration.

A targeted suspension upgrade from Whiteline for a more firmly guided rear axle – available at GreenFuchs.