1989 MR2 Suspension Parts: The Complete Guide to Control Arms

The 1989 Toyota MR2 (AW11) is a beloved mid-engine sports car, known for its nimble handling and responsive suspension. Over time, suspension components wear out, and the control arms are among the most critical parts for maintaining proper wheel alignment, steering feel, and tire life. If you're searching for "1989 mr2 suspension parts control arm," you're likely looking to replace or upgrade these components. This guide covers everything you need to know about control arms for your AW11, from function and failure signs to selecting the right replacement and installing it correctly.

Understanding Control Arms in the 1989 MR2

What Does a Control Arm Do?

Control arms (also called A-arms) are the pivot points that connect the wheel hub to the vehicle's frame. On the 1989 MR2, each front wheel has an upper and lower control arm; the rear suspension uses a multi-link setup but still relies on control arms. Their job is to allow the wheel to move up and down while keeping it in the correct geometric position for steering and camber. They house ball joints at the outer end and bushings at the inner mounts, both of which wear over time.

Common Signs of Worn Control Arms

If your MR2’s control arms are failing, you'll notice several symptoms:

• Clunking or knocking noises from the front or rear when going over bumps or turning.
• Loose steering or wandering on the highway.
• Uneven tire wear (feathering or scalloping) due to misalignment.
• Vibration in the steering wheel at speed.
• Visible damage like cracked bushings, torn ball joint boots, or bent arms (especially if the car has hit a curb or pothole).

Ignoring worn control arms can lead to poor handling, accelerated tire wear, and even safety issues. Replacement is the only reliable fix.

Types of Control Arms for the 1989 MR2

When shopping for control arms, you'll encounter two main categories: OEM replacements and aftermarket performance options.

OEM Replacement Control Arms

Original Equipment Manufacturer (OEM) control arms are built to the same specifications as the ones that came on your MR2 from the factory. They are typically made from stamped steel and use rubber bushings. OEM parts offer a direct fit, predictable ride quality, and long service life under normal driving conditions. Brands like Toyota Genuine Parts, Aisin, and Sankei are common suppliers. OEM is the best choice if you want to restore the car to stock behavior and don't plan on modifying the suspension.

Aftermarket Performance Control Arms

Aftermarket control arms are designed for improved handling, adjustability, or weight savings. They are often made of tubular steel or aluminum and use polyurethane or spherical bearings instead of rubber bushings. Key options include:

• Adjustable control arms that allow you to fine-tune camber and caster. This is essential if you've lowered the car or have aggressive alignment specs.
• Polyurethane bushing arms that reduce flex and provide sharper steering response, though they transmit more road noise and vibration.
• Tubular arms that are lighter than stock and offer a more modern look under the car.

Reputable aftermarket brands for the AW11 include Koni, Energy Suspension, and specific MR2 specialists like Twos R Us or MR2 Heaven. Performance arms are ideal for autocross, track days, or spirited street driving, but they may require more frequent maintenance and can be stiffer for daily commuting.

Factors to Consider When Choosing Control Arms

Before buying, evaluate the following:

• Condition of other suspension parts: Control arms often wear out in tandem with ball joints, tie rod ends, sway bar links, and struts. If your car has high mileage, consider replacing all components on that corner at once to avoid repeat labor.
• Desired ride quality: OEM arms with rubber bushings are quiet and compliant. Polyurethane bushings are firmer and can introduce cabin noise. Spherical bearings are the most race-oriented but are harsh for the street.
• Adjustability: If you plan to lower the car using coilovers or springs, adjustable control arms (especially rear camber arms) are necessary to maintain proper alignment.
• Budget: OEM parts are moderately priced. Aftermarket tubular arms can cost more, but some budget options exist. Avoid no-name eBay arms; they often have poor fitment and short-lived bushings.
• Installation complexity: Control arm replacement requires compressing springs, removing ball joints, and sometimes separating the hub. If you're not experienced, factor in professional installation costs.

Installation Tips for the 1989 MR2 Control Arm

Replacing control arms on an MR2 is a job best done with a decent tool set and some patience. Here are key pointers:

• Work on a level surface and use jack stands; the car is low and the suspension is under tension.
• Use a ball joint separator (pickle fork) or a press to remove the ball joint from the knuckle without damaging the threads.
• Mark the position of the eccentric bolts on the rear control arms (if adjustable) to preserve alignment settings as much as possible.
• Torque all bolts to factory specifications with the suspension loaded (car on the ground or ramps) to avoid pre-loading the bushings.
• Get an alignment immediately after installation. Even if you marked positions, the car's alignment will change with new bushings and ball joints.

Final Recommendation

For most 1989 MR2 owners, a set of quality OEM-style control arms from a trusted brand like Sankei or Aisin is the most practical choice. They restore the factory driving experience and last another 100,000 miles without fuss. If you drive your MR2 on track or want sharper handling, invest in aftermarket arms with polyurethane bushings and adjustability, especially for the rear. Always replace the ball joint and bushings that come with the arm—do not reuse old ones. Pair the control arms with fresh sway bar links and struts for a comprehensive refresh. Your 1989 MR2 will reward you with crisp, predictable handling and a smile every time you take a corner.