Doorbusters BMW Control Arm Replacements & Upgrades for BMW 3 Series E30 (1984-1991)

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Control arms, and their integrated ball joints, are some of the most crucial components on a BMW suspension. The control arms literally control the wheel and suspension as they go through their range of motions. They do more than just keep the alignment in a constant spec - they are a vital locating component for the suspension itself. A faulty or worn control arm or ball joint is a very dangerous and potentially life-threatening problem so make sure they are inspected and replaced at regular intervals.

Most control arms for BMWs consist of an inner and outer ball joint made of plastic, rubber, Delrin, or metal and covered in grease with a rubber boot to seal it from the outside. The ball joint rotates and spins as the control arm goes through its movements and that will wear the ball joint and make it loose. The grease inside the housing can also get used up, evaporate, or become contaminated from moisture and foreign particles. As the ball joint becomes worn it can result in excess movement within the housing. Your steering and handling will become less precise and there is usually a light clunking or clicking sound. In rare and extreme cases the ball joint can separate from the control arm completely, leading to a total loss of suspension and steering control. You should have the ball joint play checked annually and replace them every 3-4 years. Most track organizations will not allow a car if they are older than three years.

Control arms also take abuse from impacts and handling forces. Aluminum control arms will generally bend and prevent an accurate alignment. Steel control arms will crack and fracture and require close inspection annually and replacement every 3-4 years.

We sell OE BMW, OEM, and performance upgrade control arms from proven manufacturers. The control arm is so important to a BMW suspension that we insist on only top quality brands and designs and will never sell a control arm based on price alone. We also have upgrade packages with superior designs and better bushing options and we have bundled these together with valuable package savings.
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ECS Adjustable Coilover System & Turner Motorsport Offset Polyurethane FCABs (80A) - E30
ECS Adjustable Coilover System & Turner Motorsport Offset Polyurethan...
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T#:47439407
Part#: 051535LADBKT2
Ships on Feb 5, 2027
$ 1,078.99 USD
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$ 1,078.99 USD
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Add to Wish List

Push your E30’s handling to the next level with this limited-time Doorbuster bundle, combining ECS Performance Adjustable Coilovers with Turner Motorsport Polyurethane Front Control Arm Bushings for sharper cornering, reduced deflection, and a more connected, engaging driving experience.

ECS Performance Adjustable Coilover System – E30 (51mm)

Engineered for the enthusiast who drives daily but demands performance, ECS coilovers strike the perfect balance of firmness, compliance, and aggressive stance. With fully adjustable ride height and 32 levels of damping, these coilovers improve handling while maintaining comfort, giving your E30 a refined, track-ready feel.

Performance Highlights:

32 levels of rebound damping adjustment for precise tuning

Lowering range: 1" – 4" for perfect stance and lowered center of gravity

Spring rates: 8K Front / 10K Rear, heat-treated progressive coil springs

Monotube adjustable shocks/struts paired with optimized springs for reduced body roll

Adjustable front and rear bodies maintain correct spring preload and shock valving regardless of ride height

Design & Construction:

Strut and shock bodies finished in durable gloss black powder coat

Threaded portions zinc-coated for corrosion protection

Coil springs finished in Reflex Silver Metallic

Red anodized aluminum spring seats with locking collars for quick, on-car adjustments

Adjustable sway bar end links with heavy-duty bushings included

Integrated bump stops and dust boots, zinc-coated mounting hardware

Turner Motorsport Offset Polyurethane Front Control Arm Bushings (80A)

Start your handling upgrade at the control arms. Factory bushings prioritize comfort, allowing deflection that softens steering and braking precision. Turner 80A polyurethane bushings replace this softness with a direct connection to the chassis, reducing slop while maintaining streetable compliance. Pre-installed in high-quality housings, these bushings also feature an offset design for increased caster, enhancing straight-line stability and cornering performance.

Key Features:

80A polyurethane for firm yet compliant handling

Offset design increases caster for improved tracking and stability

Pre-installed in durable housings for easy installation

CNC-machined Delrin center sleeve ensures low friction, high precision, and deflection-free operation

Internal grease retention grooves included; bushing grease supplied

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