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If your Subaru Impreza feels loose, drifty, or noisy over bumps, worn rear control arms could be the cause. The right rear control arms restore rear-end stability, maintain proper wheel alignment, and reduce premature tire wear on this chassis.This guide shortlists the top rear control arms for Subaru Impreza owners who want dependable fitment and long-term durability. We evaluated candidates for build quality, bushing and joint design, and how they affect alignment and ride quality. Read on to understand the tradeoffs and which characteristics matter most before you replace the rear control arms.
Looking for other parts? See all Subaru Impreza parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | maXpeedingrods Adjustable Rear Lateral Links and Trailing Arms for Subaru Impreza (1993–2007) |  |
| Best Quality Built to a higher standard if you want something more solid | ISC Suspension Rear Adjustable Control Arm V3 (vehicle-specific) |  |
| Best Value The sweet spot between price and what you get | MOOG RK643086 Rear Lower Control Arm |  |
| Best Budget The cheapest option that still gets the job done reliably | A-Premium Rearward Suspension Lateral Control Arm, 2-Pack for Subaru Impreza 2002–2007 (Sedan) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Detroit Axle Pair Rear Lower Control Arms (Adjustable) |  |
| Most Popular A crowd favorite that many people choose with confidence | Detroit Axle Rear Lower Rearward Control Arm Assembly |  |
| Best Seller A high-volume bestseller chosen again and again | Detroit Axle Rear Trailing Arms Kit (pair) for Subaru Impreza/Forester/Crosstrek |  |
1. maXpeedingrods Adjustable Rear Lateral Links and Trailing Arms for Subaru Impreza (1993–2007)
| Application | 1993–2001 GC8/ GDA/ GDB; 2002–2007 GDA/ GDBC/ GGA (GD/ GG) |
|---|---|
| Engine fitment | 2.0L/2.5L EJ20/EJ25 turbocharged engines only |
| Material | High-strength steel |
| Finish | Powder-coated |
| Design | Length adjustable tubular control arms |
This maXpeedingrods kit replaces the rear lateral links and trailing arms on Subaru Impreza WRX/STi models from 1993 through 2007 (2.0L/2.5L EJ20/EJ25 turbo engines). The set includes adjustable-length tubular lateral links and trailing arms made from high-strength steel with a powder-coated finish. Use it to correct rear toe and pinion angle, dial in suspension geometry after lowered or modified setups, or tighten rear-end response for spirited driving and track work. The adjustable design makes alignment changes straightforward without needing custom fabrication, and the tubular construction aims to increase strength over stock stamped arms. Installation is suitable for a competent DIY mechanic or a shop, and the seller provides an installation video and technical support. Limitations are that the kit is vehicle- and engine-specific so it will not fit non-turbo Impreza variants, and the finish and bushings may require periodic inspection under heavy use; buyers should plan for a professional alignment after fitting.
Best for: Buyers who want a balanced upgrade to rear suspension geometry—improving stability and cornering without committing to a full race-only setup.
Less Ideal for: Those seeking a direct, drop-in replacement for non-turbo Impreza models or buyers who need a maintenance-free OEM-style arm should look elsewhere.
- Length-adjustable design allows precise rear toe and alignment corrections.
- Tubular high-strength steel construction offers greater rigidity than typical stamped arms.
- Powder-coated finish resists corrosion for longer service life.
- Kit includes both lateral links and trailing arms for a complete rear suspension update.
- Fits only turbocharged EJ20/EJ25 Impreza models from 1993–2007 and is not universal.
- May require professional alignment and periodic inspection of bushings under aggressive driving.
Verdict: A practical, adjustable rear control arm kit that tightens handling and lets you fine-tune rear alignment for 1993–2007 turbo Impreza WRX/STi models.
2. ISC Suspension Rear Adjustable Control Arm V3 (vehicle-specific)
| Auto Part Position | Rear |
|---|---|
| Fit Type | Vehicle Specific Fit |
| Material Type | Aluminum |
The ISC Suspension Rear Adjustable Control Arm V3 swaps into the rear suspension to give tunable camber and alignment control for sportier handling on compatible Subaru models. It is made from aluminum, features an anodized finish and ISC's Street Seal corrosion protection, and offers a large adjustment range so you can dial rear geometry for track days, autocross, or lowered street setups. Typical use is as a single replacement or upgrade part when you need stronger, adjustable rear links to correct camber after lowering or to fine tune handling balance. Practical benefits include lighter weight versus steel arms, corrosion resistance for longevity, and precise threaded adjustability for repeatable settings. Important limitations are that this is a vehicle-specific rear arm sold as a single piece so matching pairs must be purchased separately for full-vehicle swaps, and installation requires alignment afterward and basic mechanical ability or professional installation.
Best for: Buyers wanting to improve rear-end handling and adjustability on a performance-oriented Subaru who plan to tune alignment settings after lowering or for track use.
Less Ideal for: Drivers seeking a simple, no-adjustment factory-style replacement or those who prefer to replace both sides at once without buying individual arms.
- Large adjustment range for camber and toe tuning
- Aluminum construction reduces unsprung weight compared with steel replacements
- Anodized finish and Street Seal corrosion protection improve durability
- Vehicle-specific fit simplifies bolt-in installation for supported Subaru models
- Sold as a single control arm rather than a matched pair
Verdict: Choose this ISC adjustable rear control arm if you need a lightweight, corrosion-resistant, tunable rear link to dial rear geometry for performance-focused Subaru setups.
3. MOOG RK643086 Rear Lower Control Arm
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear Lower |
| Material Type | Forged Steel, Stamped Steel, Aluminum |
This MOOG RK643086 rear lower control arm is a direct-fit replacement made for specific Subaru platforms and intended to restore proper wheel alignment and handling after a worn arm causes play or uneven tire wear. It is constructed from forged and stamped steel with aluminum components and includes corrosion-resistant coatings on exposed studs to extend service life. In practical use you would swap this in place of a failed rear lower arm to recover steering response and stability; MOOG designs these as vehicle-specific parts so installation is straightforward for a competent DIYer or a shop familiar with Subaru suspension work. Notable features include reinforced structural design and coatings for rust resistance, which are useful on winter or coastal cars. Limitations are that this is a single rear lower arm sold for the specified Subaru fitments only, so confirm the exact year and model before buying and expect a standard mechanical swap rather than any performance upgrade beyond renewed factory-quality handling.
Best for: Buyers looking to cost-effectively restore factory steering feel and alignment on a Subaru without aftermarket performance modifications; ideal for owners focused on practical, long-term repair value.
Less Ideal for: Not appropriate for drivers seeking performance-tuned suspension parts or those who need a universal or multi-vehicle solution.
- Vehicle-specific direct-fit design simplifies installation and alignment.
- Forged and stamped steel construction for added structural strength.
- Corrosion-resistant coatings on studs to help long-term durability.
- Designed to restore steering response and correct uneven tire wear.
- Sold as a single rear lower arm and must be matched to exact Subaru year/model fitment.
Verdict: Choose this MOOG rear lower control arm to reliably restore factory-quality handling and alignment on the specified Subaru models.
4. A-Premium Rearward Suspension Lateral Control Arm, 2-Pack for Subaru Impreza 2002–2007 (Sedan)
| Fitment | Subaru Impreza 2002-2007 Sedan Rear Rearward |
|---|---|
| Material | Steel |
| Bushing | With |
| Quantity | 2-Pack |
| Warranty | 1-Year |
This 2-pack of A-Premium rearward lateral control arms replaces the factory rear control arm on Subaru Impreza sedans from 2002 through 2007. Designed as a direct-fit replacement, each stamped steel arm comes with pressed-in bushings (ball joint not included) so installers can swap both left and right sides in one service. In use the arms are intended to cure common rear suspension complaints such as clunking noises, steering wander, uneven tire wear, and vibration. The parts are machined finished and packaged with the fittings shown, and they carry a one-year support period from the brand. Practical benefits are straightforward: you get a budget-friendly pair that restores rear geometry and handling without sourcing individual aftermarket pieces. Limitations are that these are basic replacement arms rather than performance uprated pieces, they arrive without a ball joint or pre-grease, and a professional alignment after install is still required to fully correct tire wear and tracking.
Best for: Buyers who need an economical, direct-replacement solution to restore rear suspension geometry and stop clunks or wander on an older Impreza sedan.
Less Ideal for: Drivers seeking performance-upgraded suspension components or heavy-duty arms for racing and off-road use should consider strengthened aftermarket options instead.
- Sold as a two-pack for both rear sides so you can replace matching arms at once
- Stamped steel construction and machined exterior for durable, OEM-style replacement
- Includes pressed-in bushings for a ready-to-install suspension pivot
- Fits specified Subaru Impreza 2002–2007 sedan rearward position to address steering wander and clunks
- Does not include ball joints or pre-greasing, so additional parts or prep may be needed
- Not a performance or heavy-duty upgrade—intended as a factory-quality replacement only
Verdict: If you want an affordable, direct-fit pair to restore rear suspension stability on a 2002–2007 Impreza sedan, this A-Premium two-pack is a practical choice.
5. Detroit Axle Pair Rear Lower Control Arms (Adjustable)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear Lower |
| Material | Alloy Steel |
| Adjustability | ±2° camber, 1.5° fixed toe |
| Kit Includes | 2x Rear Lower Rearward Control Arms Assembly |
These Detroit Axle rear lower control arms replace the factory rearward lower links and provide adjustable camber plus limited toe correction to bring a vehicle's rear alignment back into spec. They are supplied as a passenger and driver side pair and are built from alloy steel with a polished exterior, intended for direct fitment to the listed Subaru and Toyota models. Typical use is as a factory-replacement or refresh when worn bushings or damaged arms cause pull, uneven tire wear, or poor handling. The adjustable camber (plus or minus 2 degrees) and 1.5 degree fixed toe capability let a tech dial in rear alignment after suspension work or lowering. Benefits include solid construction, straightforward bolt-in installation for a compatible vehicle, and the ability to correct camber without replacing multiple components. Limitations are that toe adjustment is limited and full alignment may still require other rear suspension checks, and installation may require an alignment after fitting to realize the adjustment advantages.
Best for: Buyers who prioritize a durable, factory-style replacement that restores rear alignment and handling on the specified Subaru models and prefer a parts-first solution over custom suspension upgrades.
Less Ideal for: Drivers seeking wide-range performance suspension tuning or full adjustable rear toe cannot get complete adjustment from these arms and should consider dedicated performance linkage alternatives.
- Vehicle-specific fit for direct replacement on the listed Subaru and Toyota applications
- Adjustable camber up to plus or minus 2 degrees to correct rear camber without extra parts
- Constructed from alloy steel designed to withstand regular road use and impacts
- Supplied as a passenger and driver side pair for complete rear axle service
- Toe correction is limited to a 1.5 degree fixed setting which may not replace full adjustable toe links if needed
Verdict: If you want a durable, vehicle-specific rear lower arm that restores alignment and lets you fine-tune camber, this pair delivers practical, reliable correction for the listed Subaru models.
6. Detroit Axle Rear Lower Rearward Control Arm Assembly
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear Lower |
| Included Components | Rear Lower Rearward Control Arm |
| Adjustability | ±2° camber, 1.5° fixed toe |
This Detroit Axle rear lower rearward control arm is a direct-fit replacement designed to restore rear suspension alignment and stability on compatible Subaru models. It installs in place of the factory arm and is commonly used when worn bushings or damage cause rear wheel misalignment, uneven tire wear, or vague handling. The arm is noted as adjustable for camber (±2 degrees) with a fixed toe spec, which helps a technician dial in rear alignment after installation. Detroit Axle states the part undergoes impact and fatigue testing and ships as a single assembly ready to bolt in, so it reduces parts-sourcing and press-fit bushing work during replacement. Expect a functional, budget-friendly alternative to a factory replacement with predictable fitment for the listed Subaru applications. Limitations are typical for aftermarket arms: long-term durability can vary by driving conditions and installation quality, and if you need fully adjustable toe or performance-oriented geometry the fixed toe may be restrictive for aggressive setups.
Best for: Buyers who prioritize a proven, vehicle-specific replacement that restores factory alignment and handling with minimal fuss and who value corroborating fitment and reviews before buying.
Less Ideal for: Shoppers building performance suspension or who need multi-axial adjustability and corner-weighting capabilities should consider more adjustable aftermarket arms or performance-oriented kits.
- Vehicle-specific fit for listed Subaru applications for simpler installation
- Adjustable camber capability to correct rear alignment without extra components
- Ships as a complete rearward control arm assembly reducing installation prep
- Manufactured and tested for impact and fatigue to address durability concerns
- Toe is fixed rather than fully adjustable which limits alignment tuning for performance builds
Verdict: A straightforward, vehicle-specific replacement that restores rear alignment and handling on compatible Subaru Impreza models while offering camber adjustment for easier post-install alignment.
7. Detroit Axle Rear Trailing Arms Kit (pair) for Subaru Impreza/Forester/Crosstrek
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear |
| Material Type | Alloy Steel |
| Kit Includes | 2x Rear Trailing Arms Assembly |
This Detroit Axle kit supplies two rear trailing arms intended as direct-fit replacements for selected Subaru Impreza, XV Crosstrek, Crosstrek, and Forester years. The assemblies are made from alloy steel with a high-strength structure and come prepped for installation as a vehicle-specific fit, so they replace worn trailing arms without major modification. In use they restore rear suspension alignment and control, reducing play and improving stability compared with aged or rusted arms. The kit emphasizes corrosion resistance and rigidity, which should extend service life under normal driving and light rough-road conditions. Installation is straightforward for a competent DIYer or a shop since the parts are built to match factory mounting points. Limitations: the listing is for the specific year and engine combinations shown, so buyers must confirm exact fitment, and the parts do not include related hardware beyond the two arms in the kit.
Best for: Buyers who prioritize a reliable, factory-style replacement to restore rear suspension control and prefer parts that are easy to install or have shop-fit confidence.
Less Ideal for: Drivers looking for performance-tuned or adjustable aftermarket arms, or those who need multi-vehicle fitment without confirming year and model compatibility.
- Direct-fit replacement built to match factory mounting points for easier installation
- Alloy steel construction with reinforced structure for improved rigidity and wear resistance
- Sold as a matched pair so both sides get renewed at the same time
- Designed for specific Subaru model years to simplify compatibility checks
- Fitment is limited to the listed Subaru model years and engine types so verification is required
Verdict: Choose this matched pair when you want a straightforward, factory-style replacement to reliably restore rear suspension control on the specified Subaru models.
Choosing the Right Subaru Impreza Rear Control Arm: Key Factors to Consider
Bushing Type And Durability
Bushing design determines how much road feedback and vibration transfer to the body and how long the control arm lasts. Harder bushings, such as polyurethane, give crisper handling and better control under load but can transmit more noise and harshness. Softer rubber bushings isolate NVH better and can be more comfortable for daily driving, but they tend to degrade faster, especially in salty or wet climates.
On the Subaru Impreza, rear bushing wear tends to show as looseness and alignment drift, so consider the expected lifespan for your driving conditions. Also think about serviceability: some designs use replaceable inserts while others require swapping the whole arm when the bushing fails.
Mounting Fitment And Tolerances
Accurate mounting points ensure the control arm holds suspension geometry within factory specifications. Poorly located or inconsistent mounting holes can induce unintended camber or toe changes that cause alignment issues and uneven tire wear. For the Impreza, even small deviations can affect rear toe sensitivity and handling balance.
Look for parts with strict manufacturing tolerances and clear fitment documentation. If you plan to reuse factory fasteners or mounting brackets, confirm bolt sizes and clearances match to avoid installation headaches.
Material And Corrosion Resistance
Control arms take constant mechanical stress and exposure to the elements, so the choice of material and coating is critical. Stamped steel arms are common and are cost-effective, but the gauge of steel and protective coatings determine lifespan in wet or salted roads. Cast or forged arms offer higher strength for the same weight but are usually costlier.
For Subaru Impreza owners in harsh climates, look for arms with plated finishes, powder coating, or additional corrosion-resistant treatments. Pay attention to welded joint quality since poor welds can be a long-term failure point.
Ball Joint And Joint Design
Some rear control arms incorporate a ball joint or a dedicated pivot joint that affects steering feel and suspension articulation. The quality of that joint impacts both handling predictability and longevity. Sealed, serviceable joints with robust dust boots help keep contaminants out and extend service intervals.
If a control arm integrates a ball joint, verify the joint's construction and expected maintenance. A failing joint often produces clunks, wandering, or uneven tire wear, so durable joint design is essential for safe, consistent handling on the Impreza.
Impact On Wheel Alignment
Replacing rear control arms can change static alignment settings, especially toe and camber at the rear. Some aftermarket arms allow minor adjustments to dial in alignment, while others are fixed and expect subsequent alignment checks. For the Impreza, uncontrolled changes in rear toe can quickly lead to instability at highway speeds or accelerated tire wear.
Factor in whether the replacement will require a full alignment, whether the arm preserves factory geometry, and how easy it is to set alignment tolerances during installation.
Installation Complexity And Serviceability
Installation difficulty affects total cost and downtime. Some control arms are straightforward bolt-on replacements that reuse factory hardware and require basic tools. Others may need press-fit bushings, special sockets, or temporary support of the suspension to remove and install safely.
Consider whether you will perform the job yourself or rely on a shop. Parts with replaceable bushings or greaseable joints can lower long-term maintenance costs, whereas sealed units may be simpler initially but require full-arm replacement when worn.
Common Symptoms Of Rear Control Arm Wear On The Impreza
Worn rear control arms often manifest as clunks over bumps, wander during cornering, or a loose feeling at the rear. Owners may also notice premature or uneven tire wear along the edges, especially if bushings have degraded and allowed uncontrolled toe changes.
Other signs include vibration or thumping during acceleration or braking when the arm's bushings or joints are excessively worn. Regular visual inspection can reveal torn bushings, corroded metal, or loose fasteners before symptoms become severe.
- Clunking noises over bumps or during directional changes
- Loose or imprecise rear steering feel
- Accelerated or uneven rear tire wear
- Visible bushing cracks, oil saturation, or excessive play at joints
When To Replace Rear Control Arms
Replace rear control arms when inspection reveals excessive bushing movement, torn boots on joints, or any play at pivot points. If you can move the wheel relative to the arm by hand with noticeable slop, that is a clear trigger for replacement.
Also plan replacement if your alignment report shows recurring rear toe or camber drift after proper alignment, as this indicates the control arm is not holding geometry under load. Consider replacement during other rear suspension work to reduce labor overlap.
- Visible play during a pry test at the bushing or joint
- Persistent alignment drift after correct adjustments
- Torn dust boots or heavy corrosion around mounting points
- During rear subframe or bushing service to reduce repeated labor
Installation Tips For Subaru Impreza Rear Control Arms
Torque remains important: install fasteners to factory torque specs to prevent bushing preloading or distortion. If you install new arms with uncompressed bushings, torque with the suspension at ride height only if the design calls for it; otherwise follow manufacturer guidance.
Use penetrating lubricant on fasteners if they are corroded and replace any damaged bolts. If bushings are non-serviceable, consider spraying mounting surfaces with anti-seize to aid future removal. After installation, always get a full alignment and road test the vehicle to confirm handling.
- Follow factory torque values and tighten in correct sequence
- Support the suspension to avoid shock-loading bushings during installation
- Replace severely corroded hardware rather than risk fastener failure
- Always perform a post-installation alignment and test drive
How Rear Control Arm Design Affects Ride And Handling
Stiffer bushings and tighter joint tolerances reduce deflection under load, which sharpens handling and improves turn-in response. On the Impreza this can increase mid-corner stability but may amplify pothole and road-edge impacts.
Conversely, softer bushings allow more compliance for a smoother ride but can let the wheel move under lateral loads, compromising precision. Choose a design that balances your typical driving: commuting and comfort versus spirited driving and track use.
- Tighter joints equal more predictable rear traction in corners
- More compliant bushings improve ride comfort at the cost of precision
- Design choices affect both tire wear patterns and steering balance
Maintaining Rear Control Arms To Extend Service Life
Regular inspection for bushing cracks, boot tears, and corrosion will spot issues early. Clean mounting areas and apply corrosion prevention if you live where salt or road chemicals are common. Greaseable joints should be serviced per vehicle maintenance intervals.
Address alignment issues promptly to avoid accelerating bushing wear. Small steering or suspension faults left unchecked can place undue stress on rear control arms and reduce their useful life.
- Inspect annually or after winter for corrosion and bushing condition
- Service greaseable joints and keep dust boots intact
- Fix alignment problems quickly to avoid premature wear
Still looking for the perfect fit?
Select your Subaru Impreza configuration to see the most relevant Control Arms recommendations
How We Chose the Best Subaru Impreza Rear Control Arm
We prioritized parts that directly address the common failure modes and alignment impacts specific to Subaru Impreza rear suspension. Our selection filters emphasized construction quality, bushing and joint design, and compatibility with factory suspension geometry. We considered materials and manufacturing tolerances that affect strength and long-term resilience under typical road and weather conditions.Evaluation criteria included bushing type and expected lifespan, metal thickness and corrosion protection, tolerances for mounting points to ensure consistent alignment, and whether the design preserves factory camber and toe settings. We also weighed how easily the part integrates with common suspension service procedures and typical replacement steps.Exclusions: we excluded items that require significant chassis modification, non-factory ride-height changes, or those with unclear fitment information. We also left out parts that only addressed cosmetic upgrades rather than structural or alignment functionality. The goal was to focus on rear control arms that restore or improve handling and longevity while maintaining proper suspension geometry for the Subaru Impreza.
Our full evaluation process is outlined in our review methodology.
FAQ
How can I tell if a Subaru Impreza rear control arm is bad?
Common indicators include clunking noises over bumps, looseness or wandering at the rear during cornering, and uneven tire wear. A visual inspection that finds torn bushings, leaking grease, or play at joints confirms the diagnosis.
Will replacing rear control arms fix alignment issues?
Replacing worn control arms can correct alignment drift if the original arms were allowing movement. However, you should have a professional alignment after replacement because the new parts will set different geometry values that need to be adjusted.
Are rear control arms difficult to install on an Impreza?
Difficulty varies by design. Many are bolt-on and straightforward with basic tools, but some require press-fit bushings or suspension support during removal. If you lack tools for suspended components or torque specs, a shop installation is a practical option.
Do rear control arm bushings wear out faster in certain conditions?
Yes. Frequent exposure to road salt, water, and heavy loads accelerates bushing wear. Aggressive driving and rough roads also increase stress on bushings and joints, leading to earlier failure compared with gentle driving on smooth surfaces.
Can I replace just the bushing instead of the whole control arm?
Sometimes bushings are serviceable or available as replacement inserts, allowing cheaper repairs. Other arms have bonded or pressed-in bushings that require specialized tools to replace, making full-arm replacement more practical in many cases.
Will upgraded rear control arms change ride comfort?
Upgraded arms with stiffer bushings or tighter joints often sharpen handling but can increase transmitted noise and harshness. If comfort is a priority, choose designs that balance durability with compliant bushing materials.
Final Verdict
When replacing rear control arms on a Subaru Impreza, prioritize parts that preserve or improve suspension geometry while matching your driving style. Focus on bushing durability, accurate mounting tolerances, and robust joint design to avoid recurring alignment and wear problems. Balance the desire for crisper handling against potential increases in NVH, and plan for a post-installation alignment. With those tradeoffs in mind, you can select a rear control arm that delivers reliable handling and long service life for your Impreza.
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