Description

Whiteline Rear Control Arm Front Upper Bushings for Mitsubishi Evo 4–9 (W0590)

Firstly, Buy Whiteline Rear Control Arm Front Upper Bushings W0590 for Mitsubishi Evo 4–9. The Whiteline Rear Control Arm Front Upper Bushings for Mitsubishi Evo 4–9 (W0590) are a performance suspension upgrade designed to replace worn, soft, or deteriorated factory rubber bushings in the rear upper control arm. Developed specifically for Mitsubishi Lancer Evolution 4, 5, 6, 7, 8, and 9 applications, the W0590 kit uses Whiteline synthetic elastomer bushings to provide more controlled suspension movement, improved tyre contact, and a more predictable rear-end feel. Whiteline lists the kit for Evo 4–9 applications and specifies that it includes 2 bushings and 2 pins, with one kit required per vehicle.

As performance vehicles age, the original suspension bushings can become soft, cracked, or worn. Because bushings control movement between suspension components, deterioration can affect wheel alignment, handling consistency, braking stability, and tyre wear. Replacing aged factory rubber with a firmer performance bushing can help restore more precise suspension control while making the rear suspension feel more responsive.

The W0590 is an excellent choice for Mitsubishi Evolution owners building a road car, OEM+ project, weekend performance car, or track-focused Evo that needs improved suspension control without replacing the complete rear control arm assembly.

Whiteline Rear Control Arm Front Upper Bushings for Mitsubishi Evo 4–9

The W0590 is positioned at the rear upper control arm, front inner location. This is an important distinction because the Evo 4–9 rear suspension uses several different control-arm bushings, and each position requires the correct part.

Whiteline specifically identifies W0590 as the Rear Control Arm Upper Front – Inner Bushing Kit. The kit contains two bushings and two pins, and Whiteline specifies that one kit is required for the vehicle.

The bushings are designed to provide more consistent suspension movement than aging factory rubber. Whiteline describes the product as helping maximize tyre contact with the road while improving cornering and grip.

Key Features

• Whiteline performance suspension bushing kit
• Part number W0590
• Rear upper control arm application
• Front inner position
• Designed for Mitsubishi Lancer Evolution 4–9
• Synthetic elastomer bushing material
• Includes 2 bushings
• Includes 2 pins
• One kit required per vehicle
• Designed to reduce unwanted suspension movement
• Helps improve tyre contact and rear suspension control
• Suitable for street, performance, and track applications
• Whiteline lifetime warranty coverage for applicable bushing kits

Mitsubishi Evo 4–9 Fitment

The Whiteline W0590 is designed around the rear suspension geometry of the Mitsubishi Lancer Evolution 4 through Evolution 9.

Compatible applications include:

• Mitsubishi Lancer Evolution IV — 1996–1997
• Mitsubishi Lancer Evolution V — 1998
• Mitsubishi Lancer Evolution VI — 1998–2001
• Mitsubishi Lancer Evolution VII — 2001–2003
• Mitsubishi Lancer Evolution VIII — 2003–2005
• Mitsubishi Lancer Evolution IX — 2005–2007

Whiteline’s vehicle listings confirm W0590 applications across these Evolution generations.

The same fitment is also commonly grouped by chassis family: CN9A for Evo IV, CP9A for Evo V/VI, and CT9A for Evo VII/VIII/IX.

This makes W0590 a useful suspension upgrade for owners working on a wide range of classic and modern Mitsubishi Evolution platforms.

Why Replace the Factory Rear Control Arm Bushings?

Factory rubber bushings are designed to balance ride comfort, isolation, durability, and suspension movement. However, rubber deteriorates over time. Heat, age, mileage, road conditions, and repeated suspension movement can cause the material to soften, crack, or lose its original shape.

A worn control arm bushing can allow additional movement in the suspension. That movement can affect how consistently the wheel maintains its intended position under acceleration, braking, cornering, and changes in road surface.

Whiteline explains that worn OE rubber bushings can deteriorate as the suspension repeatedly stretches and flexes the rubber, potentially allowing the suspension alignment to move away from its intended position.

Firstly, replacing aged bushings can help restore more controlled suspension movement.

Secondly, the firmer synthetic elastomer construction can provide greater resistance to unwanted movement.

Thirdly, improving bushing control can help create a more consistent rear suspension response during cornering and other demanding driving conditions.

Synthetic Elastomer Performance

Whiteline uses a synthetic elastomer compound in its control-arm bushing range. Compared with aging OE rubber, this material is designed to provide greater firmness and durability while maintaining the controlled movement required by the suspension.

A firmer bushing can reduce unwanted compliance in the control arm. This can contribute to more consistent suspension geometry and a sharper overall response.

There is an important trade-off, however. Firmer suspension bushings can transmit more road feedback into the vehicle. Whiteline’s bushing information notes that increased firmness can result in some additional noise, vibration, and harshness (NVH) compared with softer OE rubber.

For an enthusiast-oriented Mitsubishi Evolution, this additional feedback may be acceptable when the goal is improved suspension control and performance.

W0590 Product Specifications

Brand: Whiteline
Part Number: W0590
Product Type: Rear Upper Control Arm Bushing Kit
Position: Rear
Control Arm Location: Upper control arm
Bushing Position: Front inner
Vehicle Application: Mitsubishi Lancer Evolution 4–9
Material: Synthetic elastomer
Kit Contents: 2 bushings, 2 pins
Quantity Required: 1 kit per vehicle
Installation Time: Approximately 2 hours according to Whiteline
Wheel Alignment: Required after installation
Recommended Alignment: Rear wheel alignment
Warranty: Lifetime warranty for applicable Whiteline bushing kits

Whiteline describes the installation as potentially tricky and recommends professional fitting for customers who are not experienced with suspension work. A rear wheel alignment is recommended after installation.

Improve Evo Rear Suspension Control

The rear suspension of the Mitsubishi Lancer Evolution plays an important role in maintaining stability and tyre contact during cornering. Worn bushings can introduce additional movement that makes the rear end feel less precise.

The W0590 addresses one specific bushing location rather than replacing every suspension bushing on the car. This makes it useful for owners who have identified wear at the rear upper control arm front inner position.

For a complete suspension refresh, W0590 can also be used alongside other Whiteline Evo 4–9 bushing products. Whiteline’s larger Evo bushing kits include W0590 together with additional rear control arm, differential, toe-arm, trailing-arm, and shock absorber bushings.

This allows Evo owners to build a suspension refresh around their specific needs rather than replacing components unnecessarily.

Ideal for Street, Performance and Track Evo Builds

The W0590 is suitable for a wide range of Mitsubishi Evolution projects.

It can be used for:

• Daily-driven Evo 4–9 models
• OEM+ suspension builds
• Weekend performance cars
• Autocross cars
• Track-day vehicles
• Motorsport-oriented builds
• Suspension restoration projects
• Cars experiencing worn rear bushings
• Vehicles suffering from inconsistent rear-end behavior
• Complete Evo suspension refreshes

For a street-driven Evo, the improved control can complement upgraded dampers, springs, sway bars, alignment settings, and performance tyres. For track-focused cars, consistent suspension geometry becomes even more important because the vehicle experiences significantly higher cornering loads.

Buy Whiteline W0590 Evo Bushings Online

If you are searching for Whiteline Evo 4–9 rear control arm bushings for sale, the W0590 provides a purpose-built replacement for the rear upper control arm front inner position.

You can buy online and shop Mitsubishi Evo parts for suspension maintenance, handling upgrades, and performance builds. The W0590 is particularly useful when refreshing an older Evo where the original suspension bushings have accumulated years of mileage and exposure to heat and road conditions.

Before ordering, confirm that your vehicle is an Evo 4, 5, 6, 7, 8, or 9 and verify that you need the rear upper control arm front inner bushing position. W0590 should not be confused with W0591, which is a different rear upper control arm bushing application. Whiteline lists W0591 separately for the rear upper control arm rear inner position.

International Mitsubishi Evo Suspension Upgrade

The Mitsubishi Lancer Evolution remains popular among enthusiasts across the United States, Canada, Japan, the United Kingdom, Europe, Australia, New Zealand, and other markets.

Because Evo 4–9 suspension components can be difficult to source depending on the market, specialist performance bushings such as Whiteline W0590 are useful for owners restoring or upgrading older Evolution models.

Whether you are maintaining a Japanese-market Evo, a US-based CT9A, or an international performance build, always confirm the chassis generation and suspension position before ordering.

Frequently Asked Questions

What is Whiteline W0590?

Whiteline W0590 is a rear upper control arm front inner bushing kit designed for Mitsubishi Lancer Evolution 4–9 applications.

Where does W0590 install?

W0590 installs at the rear upper control arm, front inner position.

What Mitsubishi Evo models does W0590 fit?

The kit is listed for Evo IV, V, VI, VII, VIII, and IX applications.

How many bushings are included?

The W0590 kit contains 2 bushings and 2 pins, and Whiteline specifies one kit is required per vehicle.

Is W0590 the same as W0591?

No. W0590 is for the rear upper control arm front inner position, while W0591 is for the rear upper control arm rear inner position.

Will these bushings make my Evo ride harder?

Because Whiteline’s synthetic elastomer bushings are firmer than OE rubber, some increase in NVH can occur. The trade-off is greater control of suspension movement and improved handling response.

Does the W0590 require a wheel alignment?

Yes. Whiteline recommends a rear wheel alignment after installation.

How long does installation take?

Whiteline lists an estimated installation time of approximately 2 hours, although actual time can vary depending on vehicle condition, tools, and technician experience.

Are these OEM replacement bushings?

No. W0590 is a Whiteline performance synthetic elastomer bushing upgrade, rather than a genuine Mitsubishi OEM rubber replacement.

Is W0590 suitable for a track Evo?

Yes. The firmer bushing design is suitable for performance-oriented applications, including track-focused Evo builds, where more controlled suspension movement is desirable.

Can W0590 be used as part of a complete Evo suspension refresh?

Yes. Whiteline includes W0590 in its larger Evo suspension bushing packages alongside other control-arm, differential, toe-arm, trailing-arm, and shock absorber bushings.

Refresh Your Mitsubishi Evo Suspension

The Whiteline Rear Control Arm Front Upper Bushings for Mitsubishi Evo 4–9 (W0590) provide a purpose-built synthetic elastomer upgrade for the rear upper control arm front inner position, helping restore suspension control, improve tyre contact, and deliver a more predictable driving response, so shop Evomotorparts today and order your Whiteline W0590 Mitsubishi Evo suspension bushings for your Evo 4, 5, 6, 7, 8, or 9.