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- Rear Control Arm
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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:
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!)
Limited-Time Offer: Get a Set of ECS Performance Rear Trailing Arms with Your Purchase of an ECS Lowering Spring Set! Upgrade your E90 xDrive’s suspension performance and aesthetics with two essential upgrades in one unbeatable package.
ECS E90 xDrive Lowering Spring Set Transform your E90’s handling and stance with our specially designed ECS Lowering Springs. Built to enhance both cornering capability and ride comfort, these springs provide a balanced drop between 1.0"-1.3", giving your vehicle a sportier profile while keeping a smooth, OEM-like ride. Experience a lower center of gravity for improved stability, enhanced steering feedback, and a sleek look that reduces unsightly wheel gap for a true performance appearance.
Why Choose ECS Lowering Springs?
Better Handling and Stability: By lowering the center of gravity, these springs reduce body roll and improve road grip, delivering precise control through corners. Performance-Driven Design: Linear spring rates tuned for sporty responsiveness without sacrificing comfort, making them ideal for daily driving. Durability You Can Trust: Finished with a flat black powder coating for excellent corrosion resistance, so they look great and last. Specifications
Lowering Range: Front 1.0"-1.2", Rear 1.2"-1.3" Spring Rate: Front 505 lbs/in, Rear 854 lbs/in Ideal for Daily Drivers and Enthusiasts: With rates slightly above factory specs, ECS Lowering Springs provide improved handling without the harshness typical of coilovers, making them perfect for drivers seeking a more refined, performance-focused setup. Take it a step further by adding wheel spacers to achieve the ultimate stance—browse our wide selection of options for the E90 xDrive to complete your suspension overhaul!
ECS Performance Rear Trailing Arm Set Say goodbye to suspension flex and unwanted geometry changes under load with our Performance Rear Trailing Arms, an upgrade engineered to enhance strength and handling precision. Factory steel trailing arms can flex and even fail under harsh conditions, but these trailing arms are built to stand the test of time. Lightweight, rigid, and built from solid 6061-T6 aluminum, these trailing arms offer improved stability and peace of mind, no matter how demanding the road.
Why Upgrade to ECS Rear Trailing Arms?
Engineered for Strength: Constructed from high-grade 6061-T6 aluminum, anodized for corrosion resistance, these arms are designed to last longer and handle tougher conditions than OEM steel arms. Lightweight and Strong: Each arm is 25% lighter than stock, weighing 384 grams versus the factory 517 grams, reducing unsprung weight for better performance. Easy DIY Installation: Designed to fit seamlessly, these trailing arms won’t alter alignment settings, making them a straightforward upgrade for enthusiasts and home mechanics alike. Enhanced Handling: With virtually no flex, they eliminate unwanted suspension changes, providing a smoother, more controlled ride. Kit Includes
Lowering Spring Set: Front and rear springs with precise lowering specs and premium powder coating. Rear Trailing Arms: A set of solid 6061-T6 aluminum trailing arms, ready for direct replacement, along with all necessary hardware. Bolt Torque Spec: 74 ft-lbs
Whether you’re refreshing your E90’s suspension or completing the final touches, this ECS combo is the ultimate solution for boosted performance, aesthetics, and reliability. Get ready to drive with confidence and style!