BMW Control Arm Replacements & Upgrades for BMW E21 320i M10 1.8L

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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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Genuine BMW - Corporate Logo
T#:1436
Part#: 33329061945
Ships in 1-2 days
$ 64.63

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 64.29 USD
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$ 64.29 USD
Free Shipping on orders $49 and up
These trailing arm bushings are the stock rubber centered bushing. Each side of the car takes one pair of bushings.

This item fits the following BMWs:
1970-1976 2002 BMW 1600 2002 2002tii
1977-1983 E21 BMW 320i
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1992-1998 E36 BMW 318ti
1976-1981 E12 BMW 528i
1986-1988 E28 BMW 528e
1976-9/1982 E24 BMW 630csi 633csi
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Roadster
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Genuine BMW - Corporate Logo
T#:19975
Part#: 33329058822
Ships in 1-2 days
2% off MSRP $ 63.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 62.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 63.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 62.99 USD
Free Shipping on orders $49 and up


Genuine BMW Set Rubber Mounting Eccentric - D=30Mm
This item fits the following BMW Chassis:
E30 M3,E30,E36

Sachs - Corporate Logo
T#:370564
Part#: 33329061945
Ships on Mar 5, 2027
$ 46.99 USD
Free Shipping on orders $49 and up

OEM quality rear suspension bushing replacement. This bushing is a common cause of noise in the rear.

Bushing Diameter: 30MM


Powerflex - Corporate Logo
T#:34147735
Part#: PFR5-306GH
Ships in 1 Business Day
$ 247.99 USD
Free Shipping on orders $49 and up

For BMW E30, Z3, E21, and 2002 models, upgrading to adjustable rear trailing arm bushings from manufacturers like Powerflex offers both improved performance and the ability to fine-tune suspension alignment. These bushings are designed to replace the factory rubber bushings, which can degrade over time and lead to imprecise handling.

Key Features and Benefits:

  • Adjustable Alignment: These adjustable rear trailing arm bushings allow you to modify rear toe and camber settings. This is crucial for fine-tuning the suspension for different driving styles, especially if the car is used in motorsport applications like track days or autocross, or if the car has been lowered and needs suspension corrections.
  • Superior Handling: By significantly reducing the play in the rear trailing arms, these bushings improve the car’s handling dynamics. They keep the rear suspension more rigid during acceleration, braking, and cornering, resulting in sharper, more predictable handling.
  • Polyurethane Durability: Unlike the OEM rubber bushings, which wear out over time due to heat, road grime, and chemicals, these adjustable bushings are made of durable polyurethane. This material resists aging, cracking, and wear, ensuring consistent performance over a longer period.
  • Reduced Deflection: Adjustable polyurethane bushings limit suspension deflection, allowing the vehicle to maintain optimal suspension geometry under load. This improves cornering performance and reduces body roll.
  • Longer Service Life: Polyurethane bushings are known for their longevity compared to rubber bushings, offering a "fit and forget" solution for car owners who want reduced maintenance and better overall reliability.

Installation and Adjustment:

  • Direct Fit Replacement: These bushings are designed as a direct replacement for the stock rubber bushings, offering the same fitment while adding adjustability. No major modifications are typically required, making installation easier for those familiar with suspension work.
  • Alignment Precision: Once installed, these bushings allow precise adjustments to the suspension alignment, which is ideal for correcting issues that arise from modifications like lowering the vehicle or installing performance suspension components.

Ideal for:

  • BMW E30 (3 Series)
  • BMW Z3
  • BMW E21 (3 Series)
  • BMW 2002

These adjustable rear trailing arm bushings are perfect for enthusiasts looking for more control over their vehicle’s alignment and handling, whether for street driving or performance applications. They offer a great balance of increased performance, durability, and adjustability without sacrificing daily driving comfort.

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Powerflex - Corporate Logo
T#:34315126
Part#: PFF5-1601H
Ships in 1 Business Day
$ 81.99 USD
Free Shipping on orders $49 and up

The BMW E21 Front Control Arm Inner Bushing is an essential suspension component that connects the control arm to the chassis. It helps maintain proper alignment, reduces road vibrations, and improves steering response. Over time, the rubber bushing wears out, leading to poor handling, uneven tire wear, and unstable steering.

Upgrading to polyurethane bushings offers greater durability, reducing flex and enhancing steering precision for better handling, particularly in performance driving. Whether restoring the original comfort or seeking sharper handling, replacing these bushings is crucial to maintaining the classic BMW E21’s driving dynamics.

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Genuine BMW - Corporate Logo
T#:13492
Part#: 33326760668
In Stock
$ 2.99 USD
Free Shipping on orders $49 and up
GENUINE BMW SELF-LOCKING COLLAR NUT:339500

Genuine BMW - Corporate Logo
T#:60317
Part#: 33326762875
In Stock
8% off MSRP $ 10.27

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.40 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 10.27

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.40 USD
Free Shipping on orders $49 and up
Genuine BMW Control Arm Hex Screw With Collar - M14X1,5X82-10.9 This item fits the following BMW Chassis: E82,E90,E92,E93,F22,F30,F31,F32,F33,F34,F36,I12 i8
Rod End Boot (14-18mm) - Priced Each
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:599632
Part#: RERS3
In Stock
Sale - Save 25% $ 19.99

This product was last offered at the strikethrough price on
07-14-2026

$ 15.00 USD
Free Shipping on orders $49 and up
Sale - Save 25%
$ 19.99

This product was last offered at the strikethrough price on
07-14-2026

$ 15.00 USD
Free Shipping on orders $49 and up
Extend the life of your heim joints with this flexible rubber protective boot. Designed to fit 14mm–18mm spherical bearings and rod ends, it shields critical components from dirt, moisture, and road debris. Keeping contaminants out helps ensure consistent performance and reduces wear over time.
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Genuine BMW - Corporate Logo
T#:7695
Part#: 31111137888
In Stock
7% off MSRP $ 9.97

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.26 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 9.97

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.26 USD
Free Shipping on orders $49 and up


Genuine BMW Hex Bolt - M10X40
This item fits the following BMW Chassis:
E30 M3,E36 M3,E30,E36


Powerflex - Corporate Logo
T#:34080757
Part#: PFR5-306H
In Stock
$ 179.99 USD
Free Shipping on orders $49 and up

The Powerflex Rear Trailing Arm Bushing for BMW E30, Z3, E21, E36/5 (318ti), and 2002 models is a high-performance suspension upgrade designed to replace the stock rubber bushings. Made from durable polyurethane, this bushing enhances the connection between the trailing arm and chassis, resulting in better handling and improved suspension control.

Key Features:

  • Material: Made from high-quality polyurethane, which offers superior durability and resistance to wear compared to standard rubber bushings.
  • Performance Improvement: Minimizes flex and movement in the rear trailing arms, leading to better suspension alignment, increased stability, and more precise handling, especially during cornering and hard acceleration.
  • Direct Replacement: This bushing is a direct-fit replacement for the factory bushings in BMW E30, Z3, E21, E36/5, and 2002 models, ensuring easy installation without modifications.
  • Longevity: Polyurethane bushings last longer than rubber, offering extended service life, especially in demanding driving conditions.

Benefits:

  • Enhanced Stability: Reduces excessive movement in the rear suspension, providing improved cornering performance and reducing body roll.
  • Increased Durability: Polyurethane resists wear from heat, oils, and road debris, ensuring longer-lasting performance compared to rubber bushings.
  • Better Control: Firmer suspension response improves driving precision, making this an excellent choice for both street and track use.

The Powerflex Rear Trailing Arm Bushing is perfect for BMW enthusiasts who want to improve the performance, handling, and longevity of their car’s suspension. Ideal for both daily driving and performance-focused builds.

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TRW - Corporate Logo
T#:594012
Part#: 31121123026
Back Ordered
$ 111.99 USD
Free Shipping on orders $49 and up
Includes ball joint and bushings