Rear Control Arm for BMW X Series E84 (2013-2015)

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On several BMWs, rear control arms are a weak point. Turner Motorsport stocks a variety of replacement front control arms for your BMW. We recommend looking into the OE options we offer to save you money on your maintenance so you have more left over for performance parts!

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ECS - Corporate Logo
T#:363261
Part#: 001258ECS01
In Stock
Sale - Save 25% $ 397.99

This product was last offered at the strikethrough price on
06-13-2026

$ 298.49 USD
Free Shipping
Sale - Save 25%
$ 397.99

This product was last offered at the strikethrough price on
06-13-2026

$ 298.49 USD
Free Shipping

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

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Revshift - Corporate Logo
T#:1105927
Part#: BTA-E9X
Ships on Aug 6, 2026
$ 249.99 USD
Free Shipping
$ 249.99 USD
Free Shipping
These billet aluminum rear trailing arms fit the BMW E9x and E8x including the M models. They are CNC machined from 6061-T6 aluminum and are protected by a black anodized hardcoat. These trailing arms replace the flimsy stamped oem part, stiffen the rear suspension, and improve the vehicle's handling. Revshift Performance Engineering is a high-performance parts manufacturer with a focus on quality, reliability, and performance. Utilizing high-precision machining technologies and their very own Polyurethane Manufacturing Department, every Revshift product is designed, manufactured, and tested in-house at their Detroit, Michigan facility.
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KMAC - Corporate Logo
T#:600206
Part#: 193926-3H
Ships on Aug 17, 2026
$ 320.00 USD
Free Shipping
$ 320.00 USD
Free Shipping
Nearly every car manufactured in the modern era carries a dark secret – fully-adjustable suspension has been all but eliminated in the name of cost-cutting and assembly-line efficiency. What this means for you is increased tire wear and more frequent replacement, as a “full alignment” consists only of rudimentary toe-angle adjustment. For over forty years, K-MAC has been hard at work developing a solution to this problem with patented innovations in camber/caster plates and bushing kits, allowing easy adjustment and a true “full four-wheel alignment” to be performed by any competent shop. These bushings make camber adjustments possible for the first time, and improve the ability to complete toe angle adjustments. When used in conjunction with the K-MAC Camber and Toe kit and Rear Adjustable Trailing Arms allows full adjustability of the 5 multi-link rear arms and positive location. Bolt-on installation – insertion/extraction tube included! Easily adjusted on the car with basic hand tools Unique failsafe locking hardware – set & forget! High quality elastomer compound resists binding Hardened & nickel-chrome plated centers for maximum bushing life 2x the load area of stock bushings Spiral grease grooves
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