Turner Motorsport Thrust Arm Monoball Upgrade - Pre-Installed Arms
This product was last offered at the strikethrough price on
08-09-2025

Product Details
It’s no secret that BMW’s suffer from weak, failure prone front thrust arm bushings. The stock rubber bushings are designed to allow significant fore/aft movement of the front wheels and are fluid filled to help absorb road impacts. This compliant design maximizes daily driving comfort and helps add to the “luxury” feeling of your BMW, but it also contributes to the numb, disconnected feeling that many enthusiasts complain about with modern BMW’s. Not only is the OEM design far from ideal for the street or racing enthusiast that is looking for optimal handling and braking performance, the constant twisting and deflection required of the rubber bushing often causes premature failure, resulting in degraded handling, wheel shimmy, delayed steering response, delayed braking response, unwanted alignment change, and poor tire wear.
Introducing the new Turner Thrust Arm Ball Joints! The Turner engineering team set out to design a solution that offers far superior durability when compared to OEM, requiring no modification and offering nearly instantaneous cornering and braking response for the absolute best road feel and driving experience possible. Our thrust arm monoballs utilize a sealed OEM BMW ball joint for exceptional quality and durability. The bearing assembly is precision CNC machined from 6061-T6 anodized aluminum and features a knurled OD to ensure a perfect press fit and longest lasting component life possible.
By utilizing a sealed ball joint, Turner achieved the ultimate in terms of low friction no bind suspension travel with no unwanted deflection, providing exceptional steering precision, turn-in response, and direct braking feedback; all while maintaining exceptional comfort and durability levels making these an excellent no compromise upgrade even for a street car. These thrust arm monoball / ball joints are a must have for any track car, but are also completely street-able and are a great upgrade for any enthusiast that enjoys spirited driving.
Features:
Ball Joint / monoball
- OEM BMW sealed, greased ball joint for exceptional durability and service life, even in the most severe operating conditions
Housing
- 6061-T6 anodized housing for excellent corrosion resistance.
- Proprietary Turner designed knurled OD to provide the perfect fit for the wide range of thrust arm bore diameters among brands.
Bearing Inserts
- CNC machined 304ss, providing a precision fit between the ball joint and the subframe.
Performance
- Nearly instantaneous, crisp steering and braking response.
- Maintenance free, long lasting performance.
- Improved road feel without crazy levels of NVH - a slight increase to NVH is to be expected due to the monoball design
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This Part Fits the Following Vehicles
Make | Model | Submodel | Engine | Special Fitment Notes |
---|---|---|---|---|
BMW | E84 | X1 xDrive28i | N20 2.0L | Use vehicle selector to confirm fitment |
BMW | E84 | X1 xDrive35i | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | E90 | 325xi | N52 3.0L | Use vehicle selector to confirm fitment |
BMW | E90 | 328xi | N52 3.0L | Use vehicle selector to confirm fitment |
BMW | E90 | 330xi | N52 3.0L | Use vehicle selector to confirm fitment |
BMW | E90 | 335xi | N54 3.0L | Use vehicle selector to confirm fitment |
BMW | E90 | 335xi | N55 3.0L | Use vehicle selector to confirm fitment |
BMW | E91 | 325xi | N52 3.0L | Use vehicle selector to confirm fitment |
BMW | E91 | 328xi | N52 3.0L | Use vehicle selector to confirm fitment |
BMW | E92 | 328xi | N52 3.0L | Use vehicle selector to confirm fitment |
BMW | E92 | 335xi | N54 3.0L | Use vehicle selector to confirm fitment |
BMW | E92 | 335xi | N55 3.0L | Use vehicle selector to confirm fitment |
This Product Is Covered By Our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
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New/Unused Product Returns
ECS Tuning will accept returns for unused products within 90 days of the ship date for a refund to the original payment method used. The customer is responsible for the return shipping costs and fees. If selecting to use a prepaid shipping label, the shipping cost will be deducted from the total refunded amount. All new/unused products must be new, unused and must be in the original packaging, including labeling, manuals, hardware, etc. Special order parts are non-refundable.
In the event that we find an error on our website or on behalf of an ECS Tuning Representative, we will provide a return shipping label from the original delivery location.
Refused Packages
Any domestic orders that are returned to ECS Tuning as refused by receiver or non-deliverable will be subject to a return handling fee and will be processed as a return in compliance with our standard return policy, including a 15% restocking fee.
Any international orders that are refused at the time of delivery will be subject to carrier abandonment of the package, at which time the ordered products would be discarded by the carrier. The customer will not be refunded for the value of the order and the discarded products are no longer retrievable.
Return Process
ECS Tuning now offers an online returns solution! To get started, simply log into your ECS Tuning account, Click the "View Orders" button on the My Account home page and select the order that you wish to make a return on to begin. If you have any questions, feel free to reach out to our Customer Service Team for assistance!
Please note: Refunds will be processed to the original payment method used on the order or to an in store credit, respective to the type of return that is made as well as any pre-existing arrangements with an ECS Tuning Customer Service Representative. In the event that multiple forms of payment were used, we will refund the value to an in store credit. In the event that a return label is provided, these charges may be deducted from the total refund you receive.
Original shipping costs are non-refundable and the buyer is responsible for return shipping charges. ECS Tuning will not accept COD deliveries.
All in store credit balances will expire after one year from the original purchase date.
Shipping Policy
Free Shipping On Orders $49 & Up
Items marked with a 'Free Shipping On Orders $49 and Up' logo may qualify for free standard economy ground shipping to the contiguous United States (48 states) for most orders with a value greater or equal to $49.00 USD. Oversized products and direct ship products are excluded from this offer unless otherwise noted.
Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
Lifetime Replacement
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Click here to learn more.
Why You Should Shop From ECS Tuning
ECS Tuning stands out as more than an automotive parts supplier-it's a vibrant community fueled by a shared passion for cars. Born from the enthusiasm of car lovers, we offer an unmatched understanding and commitment to the automotive world, providing high-quality parts and accessories sourced from our own experiences. Our selection is meticulously crafted to meet the highest standards of performance, quality, and design, catering to both the latest trends and classic styles.
Our distinct advantage lies in our passionate team and comprehensive support, offering expert advice and seamless service from selection to installation. Shopping with ECS brings exclusive perks, including our Lifetime Replacement Guarantee and free shipping on orders over $49, enhancing the value of every purchase. As a central hub for car enthusiasts, ECS Tuning fosters a rich community where ideas and experiences flourish, transforming us from a mere supplier into a platform where automotive dreams come to life.
Cancellation Policy
At ECS Tuning, we understand that plans can change. That's why we offer a flexible cancellation policy for our customers. You may cancel your order at any time before you receive the shipment confirmation. This policy is designed to provide you with peace of mind and the flexibility to make adjustments to your purchases as needed. Should you decide to cancel your order, simply reach out to our customer service team, and we will assist you with the process swiftly and efficiently.
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