Note: This article contains affiliate links. If you click on these links and make a purchase, I may earn a small commission at no extra cost to you. This helps support my research and content. Read my full affiliate disclosure here.
If you drive a Scion tC, worn or damaged control arms can noticeably affect steering feel, ride comfort, and tire wear. Choosing the right replacement control arm matters because fitment, bushing quality, and ball joint design determine how the suspension behaves day to day. This guide shortlists the top options for the Scion tC and explains why each type made the cut.We evaluated parts for fitment reliability, bushing and joint durability, and ease of installation to help you pick the right solution. Read on for our top picks and the factors to weigh before buying.
Looking for other parts? See all Scion tC parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | TRQ Front Lower Control Arm Set for 2005–2010 Scion tC |  |
| Best Quality Built to a higher standard if you want something more solid | MOOG RK641289 Front Left Lower Suspension Control Arm |  |
| Best Value The sweet spot between price and what you get | Auto Shack Front Lower Control Arms with Ball Joints and Bushings (2‑pc) |  |
| Best budget The cheapest option that still gets the job done reliably | MOOG RK641288 Front/Rear Control Arm (right lower) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Metrix Premium Chassis Parts Front Right Lower Control Arm (RK640360) |  |
| Most popular A crowd favorite that many people choose with confidence | TRQ Front Lower Control Arm Set with Preinstalled Ball Joints |  |
| Best Seller A high-volume bestseller chosen again and again | MAC Front Lower Control Arms with Ball Joints for Scion tC |  |
1. TRQ Front Lower Control Arm Set for 2005–2010 Scion tC
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front Lower |
| Material Type | Alloy Steel |
| Unit Count | 2 Count |
This TRQ control arm kit supplies both driver and passenger front lower control arms as direct-fit replacements for the 2005–2010 Scion tC. Constructed from alloy steel and sold as a two-piece set, the parts are preassembled to simplify installation and restore front suspension geometry after wear or damage. Typical use is a factory-style suspension repair where worn bushings or bent arms have caused alignment drift, uneven tire wear, or vague steering feel. TRQ highlights vehicle-specific fitment and includes reference numbers matching Toyota part numbers for easy verification. Practical benefits include a complete pair in one box, corrosion-resistant alloy steel construction, and a large library of DIY installation videos to help independent mechanics and DIYers. Limitations are that this is a direct replacement part rather than an upgrade performance arm, so drivers seeking stiffer performance-oriented components or adjustable geometry will need aftermarket performance arms instead. Fitment is limited to the Scion tC 2005–2010 front lower position so confirm compatibility before ordering.
Best for: Balanced buyers who want a reliable, factory-quality replacement that restores ride stability and alignment without modifying suspension behavior.
Less Ideal for: Drivers seeking performance upgrades, adjustable suspension geometry, or parts for other vehicle models should look at specialist aftermarket arms or model-specific alternatives.
- Vehicle-specific direct-fit design for 2005–2010 Scion tC simplifies replacement.
- Includes both driver and passenger front lower control arms in one kit.
- Alloy steel construction for corrosion resistance and long service life.
- Preassembled components and online DIY videos reduce installation time and errors.
- Not a performance or adjustable control arm; intended as a factory-style replacement.
Verdict: A ready-to-install, vehicle-specific two-piece front lower control arm kit that restores factory suspension fit and function for Scion tC (2005–2010).
2. MOOG RK641289 Front Left Lower Suspension Control Arm
| Auto Part Position | Front Left Lower |
|---|---|
| Auto Part Orientation | Drivers Side |
| Material Type | Alloy Steel |
| Fit Type | Vehicle Specific Fit |
The MOOG RK641289 is a direct-fit front left lower control arm designed to replace a worn or damaged factory unit and restore steering precision and wheel alignment. It is typically used when you notice steering play, uneven inner tire wear, or clunking from the front suspension. Built from alloy steel with heat-treated reinforcement and corrosion-resistant coatings, the arm is intended to withstand repeated loads and road impacts. That enhanced structural strength helps maintain correct suspension geometry for improved handling and consistent steering response, which is valuable for performance-minded owners who want predictable behavior during spirited driving. Installation is straightforward for a vehicle-specific fit, making it suitable for DIY mechanics and shops. Limitations are its single-side fitment and that it replaces only the arm itself; worn bushings or ball joints on other suspension parts may still need attention to fully restore handling. Expect durable, factory-quality replacement performance rather than a performance-upgrade component tuned for track use.
Best for: Performance-oriented owners seeking a durable, factory-quality replacement that restores steering precision and predictable handling on a Scion tC.
Less Ideal for: Buyers looking for race-oriented adjustable arms or those who need multi-position kits for full suspension upgrades should consider specialized performance parts instead.
- Vehicle-specific direct-fit design simplifies installation and alignment.
- Heat-treated alloy steel construction adds structural strength for repeat loads.
- Corrosion-resistant coatings extend service life in harsh conditions.
- Designed to restore steering precision and front suspension geometry.
- Fits only the front left lower position so other suspension components may also need replacement.
- Not marketed as a performance-tuned or adjustable suspension upgrade.
Verdict: A rugged, factory-quality direct-fit control arm designed to restore steering accuracy and suspension geometry on compatible Scion/Toyota models.
3. Auto Shack Front Lower Control Arms with Ball Joints and Bushings (2‑pc)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front |
| Auto Part Orientation | Passengers Side |
| Material Type | Alloy Steel |
These front lower control arms from Auto Shack replace the passenger-side lower arm and arrive pre-assembled with the ball joint and bushings to simplify installation. Intended as vehicle-specific replacements, they restore suspension geometry and steering stability for the Scion tC 2005–2010 lineup listed in the fitment. The parts are manufactured to automotive quality standards and use alloy steel construction with a corrosion-resistant finish for everyday durability. In practice the kit is useful when a worn control arm causes loose steering, uneven tire wear, or noisy front suspension; swapping the complete assemblies gets the alignment back into proper range without pressing in bushings or swapping ball joints. Expect professional installation for quickest, trouble-free fitment since front lower arms can be hard to access. Limitations: hardware is not included and the warranty covers only the parts for six months, so additional fasteners or an alignment may be extra cost after install. For budget repairs on the specified Scion tC, these arms are a straightforward, cost-focused replacement option.
Best for: Budget-conscious owners looking for an affordable, ready-to-install front lower arm replacement to get their Scion tC back to proper steering and tire wear without extra fabrication or part assembly.
Less Ideal for: Buyers seeking long-term performance upgrades, heavy-duty reinforcement, or extended warranty coverage should consider premium aftermarket or OEM factory-quality alternatives instead.
- Sold as a pre-assembled pair including ball joints and bushings for faster installation
- Vehicle-specific design intended to match factory mounting points and suspension geometry
- Alloy steel construction with corrosion-resistant finish for durability in everyday driving
- Manufactured to recognized automotive quality standards (ISO/IATF 16949)
- Mounting hardware is not included, so additional bolts or brackets may be required
- Warranty is limited to six months and excludes labor and related service costs
Verdict: A cost-focused, pre-assembled front lower control arm set that restores steering geometry on the specified Scion tC but requires separate hardware and carries only a short parts warranty.
4. MOOG RK641288 Front/Rear Control Arm (right lower)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Rear |
| Auto Part Orientation | Rear |
| Material Type | Alloy Steel |
This MOOG control arm is a factory-replacement style suspension link intended to restore proper wheel geometry and steering feel on the specified vehicle. It installs in place of a worn arm to reduce steering play, correct pull, and stop premature inner tire wear. The part is engineered for structural strength and corrosion protection, with a vehicle-specific fit to simplify installation and minimize need for modification. In practice this means quicker, more predictable steering response after replacement and fewer alignment surprises. As a budget-focused option it leans on proven design rather than premium materials or extra features, so you get reliability and easier fitment but not aftermarket performance tuning or upgraded bushings for track use. Expect standard fit-and-forget performance for daily driving and commuting, while professionals or enthusiasts seeking enhanced handling may prefer a higher-spec performance arm.
Best for: Practical, budget-conscious buyers who want a reliable, factory-quality replacement to restore steering and ride for daily driving on a Scion tC.
Less Ideal for: Enthusiasts looking for adjustable or performance-tuned suspension parts or anyone needing features beyond standard replacement performance should look elsewhere.
- Vehicle-specific direct-fit design for easier replacement and correct alignment
- Engineered for structural strength to handle everyday driving stresses
- Added corrosion protection to extend service life in typical road conditions
- Not intended as a performance upgrade or for motorsport applications
- Does not advertise upgraded bushings or adjustable geometry features
Verdict: A straightforward, budget-friendly factory-style control arm that restores handling for Scion tC owners without adding performance features.
5. Metrix Premium Chassis Parts Front Right Lower Control Arm (RK640360)
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front Right Lower |
| Auto Part Orientation | Passengers Side |
| Material Type | Carbon Steel |
| Unit Count | 1.0 Count |
This Metrix front right lower control arm is a direct replacement designed for vehicle-specific fitment. It comes pre-greased and includes a pressed-in ball joint, so installation is straightforward for a mechanic or experienced DIYer. The part is made from steel, manufactured to certified quality standards, and the listing notes manufacturing in Europe/Turkey with IATF 16949 and ISO 9001 traceability. In practice that means a close visual and dimensional match to factory parts, smooth suspension movement after installation, and fewer surprises during fitment. Practical benefits include the included ball joint and a 3 year/36,000 mile limited warranty that provides assurance for reliability-focused buyers. Limitations to note are that the supplied ball joint does not have a grease fitting, so future servicing may require replacement or modification, and the part is sold as a single arm so you may need to buy the opposite side separately for paired replacements.
Best for: Reliability-focused buyers who prioritize a factory-quality replacement that minimizes unexpected issues and supports long-term dependable driving.
Less Ideal for: Buyers looking for upgraded performance or adjustable suspension parts should consider aftermarket performance arms instead.
- Vehicle-specific design for a close fit to factory mounting points
- Pre-greased assembly for immediate, smooth movement after installation
- Includes pressed-in ball joint which simplifies replacement compared with a bare arm
- Manufactured to certified quality standards with a 3 year/36,000 mile limited warranty
- Supplied ball joint lacks a grease fitting which limits long-term serviceability
- Sold as a single control arm so matching side must be purchased separately
Verdict: A solid, factory-style replacement control arm aimed at reliability-focused owners who want a close-fit, warranty-backed repair.
6. TRQ Front Lower Control Arm Set with Preinstalled Ball Joints
| Included Components | Front driver and passenger lower control arms with ball joints |
|---|---|
| Fit Type | Vehicle Specific Fit |
| Auto Part Position | Front Lower |
| Manufacturer | TRQ |
This TRQ kit includes the driver and passenger front lower control arms with preinstalled ball joints to replace worn front suspension components on compatible vehicles. It is intended for straightforward, DIY-friendly swaps where parts must line up with factory mounting points. Notable features include vehicle-specific fitment, preassembled ball joints to save installation time, and step-by-step installation videos from the manufacturer to guide home mechanics. In practice the parts tighten up loose steering, improve stability, and make post-repair alignment easier. Build quality is generally solid for an aftermarket replacement, with clean welds and factory-style bushings, though some users report variation in long-term durability compared with factory parts. The kit does not include certain fasteners in all cases, so expect to reuse some original hardware or source replacement pinch bolts if needed. For a convenience-focused buyer who wants a quick, direct-fit replacement that gets a worn front end back to spec, this set provides reliable performance at a budget-friendly value.
Best for: Buyers who prioritize convenience and want a direct-fit, time-saving replacement kit that simplifies a front suspension refresh without needing advanced mechanical work.
Less Ideal for: Drivers seeking a heavy-duty or long-term performance upgrade beyond factory specifications should consider more robust, performance-oriented aftermarket options or factory replacements.
- Vehicle-specific front lower arm set designed to align with factory mounting points for easy installation.
- Preinstalled ball joints reduce assembly time and lower the skill needed for replacement.
- Includes both left and right lower control arms so both sides are refreshed at once.
- Manufacturer provides installation videos to help DIY installers complete the job correctly.
- Some customers report durability and squeak issues after extended use compared with factory parts.
- Kit may not include every fastener needed so some original hardware or extra bolts may be required.
Verdict: A convenient, direct-fit front lower control arm kit for quick DIY replacement that restores steering tightness and alignment, though long-term durability can vary.
7. MAC Front Lower Control Arms with Ball Joints for Scion tC
| Fit Type | Vehicle Specific Fit |
|---|---|
| Auto Part Position | Front Lower |
| Auto Part Orientation | Front |
| Material Type | Alloy Steel, Aluminum |
These MAC front lower control arms are a complete front lower suspension replacement for Scion tC models, delivered as assemblies that include ball joints and related links to simplify installation. They are built to match factory fit and alignment so they install like a factory replacement and are intended to improve ride quality by restoring correct suspension geometry. The parts are manufactured in ISO certified facilities and use alloy steel and aluminum where appropriate, which should provide decent strength for everyday driving. Because this is a vehicle-specific kit it reduces parts hunting and can save time during a garage install or professional replacement. Limitations are that this listing groups multiple components rather than a single OEM stamped arm, so finish and exact material mix can vary, and buyers who expect heavy-duty or performance upgrades will find this is positioned as a factory-style replacement rather than an uprated part. Installation may still require alignment after fitting and standard shop tools to torque fasteners to spec.
Best for: A risk-averse mainstream buyer looking for a straightforward, factory-style replacement to restore proper suspension function and avoid repeated repairs.
Less Ideal for: Buyers seeking performance-tuned or heavy-duty suspension components for aggressive driving or motorsport use should consider purpose-built aftermarket arms instead.
- Vehicle-specific complete front lower assembly includes ball joints and links to reduce parts matching and simplify installation.
- Factory-form geometry aimed at restoring proper alignment and ride quality.
- Manufactured in ISO certified facilities, indicating consistent production standards.
- Alloy steel and aluminum construction balances strength and corrosion resistance.
- Not marketed as a heavy-duty or performance upgrade so durability under extreme use may be limited.
- Finish and exact material composition may vary between production batches.
Verdict: A practical vehicle-specific front lower control arm kit that restores factory geometry and simplifies replacement for Scion tC owners who want a reliable, like-for-like fix.
Choosing the Right Scion tC Control Arm: Key Factors to Consider
Fitment and Vehicle-Specific Geometry
Exact fitment is critical because control arms position the wheel and suspension in three dimensions. A part that does not match the vehicle's mounting points or arm length can alter camber, caster, and toe, leading to premature tire wear and poor steering feel.
When a control arm is designed for a specific model, it should preserve factory geometry so alignment stays within service limits after installation. Consider whether the part is a direct bolt-in or requires shims or adapters. Direct-fit parts reduce installation time and the chance of unintended alignment issues.
Bushing Material and Design
Bushing composition affects ride quality, vibration isolation, and longevity. Softer rubber bushings absorb more vibration and can improve ride comfort, while polyurethane or firmer compounds offer crisper handling but may transmit more road noise.
Also pay attention to bushing design: bonded bushings, replaceable inserts, and serviceable sleeves each offer different maintenance profiles. For daily-driven cars, a balance between durability and NVH control is usually preferable.
Ball Joint Quality and Load Capacity
Many control arms integrate a ball joint that must accommodate steering and suspension loads. A well-engineered ball joint resists play and wear, maintaining precise steering response and predictable handling as the suspension cycles.
Look for joints with adequate sealing, appropriate grease fittings or lifetime lubrication, and materials rated for expected loads. Excessive play in the ball joint often shows up as looseness in steering or uneven tire wear, so durability here reduces the need for repeat servicing.
Construction Material and Corrosion Resistance
Control arms are commonly made from stamped steel, cast iron, or forged aluminum. Material choice influences weight, stiffness, and long-term durability. Steel arms can be robust and economical, while aluminum offers weight savings at higher cost.
Surface treatment and corrosion protection are equally important. Electrocoating, powder coat, or plated finishes extend service life in wet or salted environments. Consider the expected exposure when selecting a finish to avoid premature rust and seizing of mounting points.
Impact on Alignment and Adjustment Needs
Some replacement arms preserve factory adjustable range while others are fixed, which affects how much alignment work is needed after installation. If an arm alters ride height, arm length, or bushing compliance, you may need a full alignment to correct camber and toe.
Check whether the replacement allows for factory adjustment points or requires aftermarket alignment solutions. Minimizing post-installation alignment work reduces downtime and the chance of persistent handling issues.
Installation Complexity and Serviceability
Installation difficulty varies by design. Direct-replacement arms that reuse factory hardware and have clear mounting points are simpler to install. Some designs require ball joint pressing, bushing swaps, or special tools, which increase labor time and complexity.
Consider whether you plan to install the part yourself or have it done professionally. Parts that allow serviceable bushings or replaceable joints can be easier to maintain over the vehicle's life, saving effort down the road.
How We Chose the Best Scion tC Control Arm
We prioritized parts that match Scion tC factory geometry and fit without modification, because proper alignment and steering response depend on exact fitment. Durability mattered next, so we evaluated bushing materials, ball joint construction, and expected resistance to wear and environmental exposure. Ride quality and NVH effects were evaluated by judging how bushing stiffness and joint compliance influence comfort and steering feedback. We also considered ease of installation and the likelihood of requiring additional parts, such as alignment adjustments or specialized hardware. Corrosion resistance and finish were included as practical filters to ensure long-term serviceability. We excluded options that require vehicle-specific modification, non-reversible frame changes, or versions intended only for racing with no street-legal compatibility. The resulting shortlist emphasizes parts that restore correct geometry, improve durability, and minimize follow-up work like repeated alignments.
Our full evaluation process is outlined in our review methodology.
FAQ
What are common symptoms of a failing control arm on a Scion tC?
Typical signs include clunking or knocking noises over bumps, uneven or accelerated tire wear, and a loose or wandering steering feel. You may also notice vibration through the steering wheel or irregular alignment readings during inspection. Many symptoms overlap with other suspension issues, so a visual and hands-on check helps pinpoint the control arm.
How long do control arm bushings usually last?
Bushing life varies with material, driving conditions, and exposure to road salts or debris. Rubber bushings on regularly driven vehicles often last many years, but harsher climates and rough roads accelerate wear. Firmer polyurethane bushings tend to last longer but can increase road noise. Regular inspection helps spot deterioration before it affects handling.
Will installing new control arms fix alignment issues?
New, properly fitted control arms restore correct geometry but you will usually still need an alignment after installation. If the replacement preserves factory dimensions, the alignment process is straightforward. However, if the arm changes mounting points or bushing compliance, additional alignment adjustments may be needed to bring camber and toe back into specification.
Can I replace just the control arm bushings instead of the whole arm?
In many cases you can replace bushings separately if the arm and ball joint are in good condition. Serviceable designs allow bushing replacement, which can save cost and reduce waste. If the arm has structural damage, ball joint play, or corrosion at mounting points, replacing the entire assembly is usually the safer choice.
How can I tell if the control arm ball joint is worn?
Signs of a worn ball joint include lateral play at the wheel, a clunking noise when going over bumps, or uneven tire wear on the inner or outer edges. A mechanic can jack the car and check for vertical or lateral movement at the joint. If there is measurable play, replacement or joint service is typically recommended to restore safe steering control.
Does control arm installation require special tools?
Basic installations may only need metric sockets, torque wrenches, and common hand tools, but some jobs require a ball joint press, pry bars, or torque-angle tools. If bushings need to be pressed in or out, specialized presses or tools make the job easier and safer. Consider professional installation if you lack the required equipment or alignment facilities.
Conclusion
When choosing a control arm for a Scion tC, prioritize parts that preserve the vehicle's factory geometry and offer durable bushings and ball joints. Balance bushing stiffness against ride comfort and consider corrosion protection for long-term serviceability.Also factor in installation complexity and the likelihood of needing alignment work. Selecting a direct-fit, well-finished arm with appropriate bushing material will minimize follow-up repairs and restore predictable handling.
Explore More:
- Check out all Scion tC parts & accessories
- Explore Control Arms Maintenance & Repair Guides
- Explore Suspension & Steering
- Browse all Auto Parts
