Find Parts That Fit Your Vehicle

Rear Control Arm

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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Revshift - Corporate Logo
T#:1105927
Part#: BTA-E9X
Ships in 3 Business Days
$ 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 Sep 11, 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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Rogue Engineering - Corporate Logo
T#:553830
Part#: RE.E9X.TA.M3
Ships in 8 Business Days
$ 289.00 USD
Free Shipping
$ 289.00 USD
Free Shipping

When an E9X is lowered beyond the limits of just lowering springs, the rear wheels toe-in excessively. This excessive rear toe leads to premature wear, that many people attribute to an increase in negative camber. It has become a common belief that an extremely low vehicle will wear the tires wrong as a matter of consequence. It has become standard practice to go as low as you can and proceed to replace your tires every five to ten thousand miles. Whats more is that when the vehicle reaches a certain ride height, the factory arms become maxed out and there is no way to compensate and dial in the proper toe. You're left with an improperly aligned vehicle that is in effect worse off than it was with the stock suspension installed.

This is not only uneconomical but improper and unsafe. ECS Tuning is proud to offer a solution for this problem in the form of Rogue Engineering E9X adjustable rear toe arms. These arms allow for greater toe adjustment on vehicles that have been lowered with a coilover suspension. With the toe set properly the tires can contact the road properly this maximizes grip and minimizes wear. 

Features:

  • 100% machined and anodized, 6061-T6 lightweight aluminum arms
  • High-strength, 3-piece, rod end (with carbon fiber reinforced, PTFE race) offers longer life for street compared to standard rod ends
  • SEALS-IT Rod end seals keep dirt, water, and other contaminants out
  • Rod ends feature grease fittings, to allow for rod end serviceability.
  • Lighter than stock!  (Stock is 875g, RE arms are 640g)
  • Extremely easy installation and adjustment (your alignment shop will LOVE you!)
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Rogue Engineering - Corporate Logo
T#:553834
Part#: RE.E9X.TA
Back Ordered
$ 339.00 USD
Free Shipping
$ 339.00 USD
Free Shipping

Updated design!  Now shipping!

When an E9X is lowered beyond the limits of just lowering springs, the rear wheels toe-in excessively. This excessive rear toe leads to premature wear, that many people attribute to an increase in negative camber. It has become a common belief that an extremely low vehicle will wear the tires wrong as a matter of consequence. It has become standard practice to go as low as you can and proceed to replace your tires every five to ten thousand miles. Whats more is that when the vehicle reaches a certain ride height, the factory arms become maxed out and there is no way to compensate and dial in the proper toe. You're left with an improperly aligned vehicle that is in effect worse off than it was with the stock suspension installed.

This is not only uneconomical but improper and unsafe. ECS Tuning is proud to offer a solution for this problem in the form of Rogue Engineering E9X adjustable rear toe arms. These arms allow for greater toe adjustment on vehicles that have been lowered with a coilover suspension. With the toe set properly the tires can contact the road properly this maximizes grip and minimizes wear. 

Features:

100% machined and anodized, 6061-T6 lightweight aluminum arms (and collars).

Stainless hardware and spacers are perfect for the tough Northeast climate!

New!  Easy adjustment with 22mm open ended wrench and 5mm allen key!  It only requires 15 ft. lbs. on the clamp to secure the clamp!

New!  Included lock-out kit, replaces factory eccentric hardware.

Updated 3-piece rod ends features 4130 chromoly steel bodies, heat-treated, alloy steel races, and Teflon liners

Extremely easy installation and adjustment (your alignment shop will LOVE you!)

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