BMW Control Arm Replacements & Upgrades

Stock rear lower control arms offer very little adjustment for alignment, especially in lowered vehicles, due to their use of an eccentric bolt. These aftermarket performance control arms from ECS Tuning are designed for maximum adjustability, allowing you to maximize handling and minimize tire wear.

To ensure maximum reliability, ECS Tuning's control arms are constructed from strong, lightweight 6061-T6 aluminum and feature a 303 stainless steel center turnbuckle that offers over 8 degrees of fast and precise camber adjustment. The inner bushing is a stock style serviceable OEM bushing for long life and inexpensive maintenance.

Features:

Durable construction suitable for the daily driver and track car alike
8+ degrees adjustment range for dialing in any suspension and wheel/tire setup
Center located adjuster for maximum clearance during adjustment
OEM-style bushing for long life and inexpensive service
Black anodized 6061-T6 aluminum with 303 stainless steel turnbuckle
Includes new hardware
*With the exception of the stance community, most enthusiasts will need no more than a few degrees of adjustment range. Total adjustment often is dependent on wheel/tire clearances.

The rear lower control arms on E82/E9X models are the weakest link in the rear suspension. The arm is made from folded sheetmetal and it bends and deforms easily. Not only will it deform from potholes and curbs, tow truck drivers love to hook onto them without realizing how weak they are. We have seen other race teams complete the box section to make them stronger. A bent arm will throw off the geometry in the suspension, potentially affecting handling and tire wear. These aluminum arms are both lighter and stronger than the factory sheetmetal arms and is the best solution for chronic bending of the stock arm. These are a direct replacement to your stock arms with no changes needed to your alignment. New high-grade hardware is included.

Note: the stock arm is designed from the factory to be intentionally weak. These arms will bend so that something else in the suspension does not break. Our race cars used the stock sheetmetal arm but we replaced them often. We found that it was better to finish a race with a bent arm than not finish due to a catastrophic failure. The ECS arms are still designed to be the weakest link but are far stronger than the factory arm and will not bend as easily.

This item fits the following BMWs:

2008-2013 E82 E88 BMW 128i 135i 1M Coupe
2006-2011 E90 BMW 325i 325xi 328i 328xi 330i 330xi 335i 335xi M3 - Sedan
2007-2011 E91 BMW 325i 325xi 328i 328xi - Touring Wagon
2007-2013 E92 BMW 328i 328xi 335i 335is 335xi M3 - Coupe
2007-2013 E93 BMW 328i 335i 335is M3 - Convertible

Dinan's high-performance Rear Suspension Link Kit adds precision and predictability at the limit.

The stock rear toe link setup is built with rubber bushings and a curved forged alloy rod which can easily flex. During hard acceleration and braking, this flex allows the rear wheels to have excessive toe change which ultimately causes the car to be unstable. Dinan stops the flex by replacing the rubber bushings with Teflon-lined machined steel rod ends that significantly reduce pliability while also swapping out the OEM curved bar with a stouter billet aluminum arm, thus adding stability. Like the rear toe links, the stock front trailing links also incorporate rubber bushings. Flex in these bushings allows the rear wheels to behave sloppily under heavy loads. Dinan adds precision by replacing these links with billet aluminum arms and precision ball joints just like the ones found in the Dinan front monoball kit.

Have confidence in your F90 M5 when pushing the envelope without worry of erratic suspension play or sacrificing ride quality and comfort. Whether it be at the drag strip doing quarter mile runs or simply getting the jump off the line at a stop light the end result with Dinan's Rear Suspension Link Kit is a more stable and planted driving experience when pushing the car to its limits.

Benefits of the Dinan Rear Suspension Link Kit for the BMW F90 M5:

Replaces the stock rear toe link & rubber bushings with a precision machined black-anodized aluminum arm and racing-quality rod ends.
Rod-ends are Teflon-lined for quiet operation.
Rubber boots protect rod ends from environmental damage for long-lasting performance and removes the need for constant cleaning.
Replaces the stock forward lower trailing link & rubber bushings with a precision machined black-anodized aluminum arm and precision ball joints.
Bearings are nylon-lined for quiet operation.
Dramatically improves vehicle stability during hard cornering.
Improves response by eliminating the deflection of the rubber bushings.

For someone looking for superior performance and longevity these sealed monoball bushings are the best upper thrust bearing you can buy for an F22 2-series or F3X 3/4-series. The advantage of a monoball bearing is that it will not deflect under load. All of the rubber bushings move in all sorts of directions and that changes your alignment, especially when used with big brake kits or when driven hard. The condition worsens as the bushing wears out. The Dinan monoball sits in a CNC machined aluminum housing which has zero deflection. The monoball allows complete freedom of movement but only at the desired angles. What you get is superior steering precision, better handling from more consistent alignment, and almost infinite bushing life. And thanks to the inner liner and sealed rubber boots there's none of the extra noise or reduced service life of fully solid race bushings. 

We strongly advise using these with new control arms. BMW recommends that the bushings be replaced only once per set of control arms. So if your thrust arm bushings have been replaced already then we do not recommend re-using the arms. The other reason is that the aluminum arms stretch over time which will make the bushings loose inside the arm. Other manufacturers recommend filling the stretched arms with paste but replacing the control arm is the better solution.

For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere.

This item fits the following BMWs:
2014+ F22 F23 BMW 228i M235i
2012+ F30 BMW 320i 328i 335i - Sedan
2012+ F32 BMW 428i 435i - Coupe
2013+ F33 BMW 428i 435i - Convertible
2012+ F34 BMW 328i 335i - Gran Turismo
2012+ F36 BMW 428i 435i - GranCoupe

Dinan's Rear Toe Links add precision and predictability at the limit.

The stock rear toe links are built with rubber bushings and a curved forged alloy rod. This design allows the rear wheels to have excessive toe change under hard acceleration and braking. All of this flex in the stock toe links causes the car to be unstable. Dinan stops the flex by replacing the rubber bushings with Teflon coated machined steel rod ends and the OEM curved bar with straight billet aluminum rods, thus adding stability. The Dinan rear toe link also incorporates a hex nut shaped center to aid in the necessary fine adjustment of the toe link that is tough to achieve using the stock link.

Features:

Replaces the stock rear toe link & rubber bushings with precision machine black-anodized aluminum rods and racing-quality rod ends

Dramatically improves vehicle stability during hard cornering

Improves response by eliminating the deflection of the rubber bushings

Rod-ends are Teflon-lined for quiet operation

Rod-ends incorporate left and right hand thread, which allows quick and accurate toe adjustment by simply turning center turnbuckle eliminating the need to struggle with the factory eccentric adjustment

Rubber boots protect rod ends from environmental damage for long lasting performance and removes the need for constant cleaning