Does the ride height sensor bracket on the FLCA G8X IX work the same way as on the RWD version?

Yes. Both the RWD and xDrive G8X FLCAs include the same type of ride height sensor bracket that maintains the factory sensor position regardless of arm length setting. The G8X adaptive chassis electronics, DSC, and all systems that read from the front ride height sensor continue to function normally after installation on both drivetrain variants.

Why does the xDrive G8X M3 and M4 need a different front lower control arm from the RWD version?

The xDrive AWD system uses a front differential mounted in the engine bay that connects to a front driveshaft and front CV joints inside the front subframe area. This hardware changes the available packaging space at the front lower control arm connection points and alters the geometry of the ball joint angle relative to the RWD subframe. SPL engineers the FLCA G8X IX specifically to work within the xDrive packaging constraints while still providing the full camber, roll center, and track width adjustment range and correct ball joint articulation angle.

What NVH impact should I expect after installing the SPL FLCA G8X IX on a street-driven xDrive M3 or M4?

Replacing the factory rubber lower control arm bushing with FK spherical rod ends increases transmitted road noise and harshness on rough surfaces. On smooth roads the difference is minimal. If spherical caster rod bushings or a spherical tension rod are also installed, all compliant front bushings are eliminated and NVH increases more noticeably on rough roads; SPL describes this as road noise and harshness rather than a jarring force. Running a quality shock absorber and adjusting tire pressure or construction reduces the effect for daily-driven builds.

Can replacement rod ends be ordered separately?

Yes. Replacement rod ends for the FLCA G8X IX are available from SPL Parts directly. Use the link on the SPL Parts product page or contact SPL Parts to confirm the correct replacement part.

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Description

SPL Parts Adjustable Front Lower Control Arms for G8x BMW M3 / M4 (xDrive AWD)

The xDrive G8x M3 Competition and M4 Competition are among the most capable all-weather performance cars BMW has produced. They also arrive from the factory with the same front lower control arm limitations as every other production BMW; rubber bushings that deflect under load, a geometry setup designed for factory ride height, and no meaningful camber, roll center, or track width adjustability. The SPL Parts FLCA G8X IX brings the same three-adjustment front geometry solution that track-focused G8x builds need to the xDrive platform specifically. The xDrive M3 and M4 use a different front subframe configuration from the RWD variants, with a front differential and driveshaft that changes the packaging constraints and connection geometry at the front lower control arm. The SPL FLCA G8X IX is engineered specifically for that xDrive architecture; it is not the same arm as the RWD FLCA G8X, and the two are not interchangeable. The geometry adjustments, the Double Adjuster design, and the ride height sensor bracket all serve the same purpose on both drivetrains; the arm itself is designed for the xDrive’s specific mounting geometry.

Features

Three adjustments in one arm: front camber, roll center, and front track width; specifically engineered for the xDrive G8X front subframe geometry
Ride height sensor bracket included; maintains factory sensor location regardless of arm length; BMW chassis electronics remain fully functional
Three-piece Teflon-lined FK spherical rod ends and Heim joints; correct ball joint angle for full articulation; eliminates OEM rubber bushing deflection
SPL exclusive Double Adjuster machined from 4130 Chromoly; gun-drilled; electroless nickel-plated; 360-degree rotating clamp locks without jam nuts
Blue anodized titanium socket head cap screws
Slotted main arm body with pinch bolt clamping across full adjustment range
Multiple-size stainless steel roll center spacers for precise correction at any ride height
AWD xDrive fitment only; a separate SPL FLCA G8X is available for RWD G8X models; the two are not interchangeable

Specifications

Body Material: 2024-T351 aluminum (gun-drilled, black anodized)
Bushings: PTFE-lined F1-fit FK USA spherical bearings
Adjustment: Camber, caster, track width
Hardware: Heat-treated chromoly with high-misalignment studs
Origin: Made in the USA

Applications

BMW M3 xDrive: G80, G81 | 2021-present
BMW M4 xDrive: G82, G83 | 2021-present

Notes

Installation Instructions
Only compatible with AWD models
Replacement rod ends available from SPL Parts, please contact us
SPL components are made-to-order in the USA; build time will be confirmed at the time of order.

Frequently Asked Questions

What is the difference between the SPL FLCA G8X IX and the SPL FLCA G8X RWD version? These are two separate arms for two different drivetrain configurations. The FLCA G8X is for RWD G8x M3 and M4 models. The FLCA G8X IX is for xDrive AWD G8x M3 and M4 models. The xDrive front subframe houses a front differential and driveshaft that changes the packaging constraints and connection geometry at the front lower control arm position; SPL engineers a separate arm for each configuration to ensure correct fitment and full articulation at the ball joint. The two arms are not interchangeable; confirm your drivetrain before ordering.
Does the ride height sensor bracket on the FLCA G8X IX work the same way as on the RWD version? Yes. Both the RWD and xDrive G8X FLCAs include the same type of ride height sensor bracket that maintains the factory sensor position regardless of arm length setting. The G8X adaptive chassis electronics, DSC, and all systems that read from the front ride height sensor continue to function normally after installation on both drivetrain variants.
Why does the xDrive G8x M3 and M4 need a different front lower control arm from the RWD version? The xDrive AWD system uses a front differential mounted in the engine bay that connects to a front driveshaft and front CV joints inside the front subframe area. This hardware changes the available packaging space at the front lower control arm connection points and alters the geometry of the ball joint angle relative to the RWD subframe. SPL engineers the FLCA G8X IX specifically to work within the xDrive packaging constraints while still providing the full camber, roll center, and track width adjustment range and correct ball joint articulation angle.
What NVH impact should I expect after installing the SPL FLCA G8X IX on a street-driven xDrive M3 or M4? Replacing the factory rubber lower control arm bushing with FK spherical rod ends increases transmitted road noise and harshness on rough surfaces. On smooth roads the difference is minimal. If spherical caster rod bushings or a spherical tension rod are also installed, all compliant front bushings are eliminated and NVH increases more noticeably on rough roads; SPL describes this as road noise and harshness rather than a jarring force. Running a quality shock absorber and adjusting tire pressure or construction reduces the effect for daily-driven builds.
Can replacement rod ends be ordered separately? Yes. Replacement rod ends for the FLCA G8X IX are available from SPL Parts directly. Use the link on the SPL Parts product page or contact SPL Parts to confirm the correct replacement part.

About SPL Parts

SPL Parts is a USA-based manufacturer of high-performance suspension components engineered for both professional racing and demanding street applications. Built on the core principles of strength, lightweight construction, low friction, and precision, SPL Parts products deliver the adjustability and alignment performance required by top race teams and discerning enthusiasts alike. Every component is produced using USA-sourced, certified materials and machined by experienced local shops to exacting tolerances. Professional TIG welders ensure maximum weld integrity, while each part is hand-fitted and treated with anti-seize and 3M internal panel coating for lasting protection. SPL Parts conducts all research and development in-house, allowing the team to leverage firsthand product knowledge and deliver unmatched customer support. Their suspension components feature innovative adjuster designs for quicker, more precise alignments, and utilize spherical bearings with Teflon liners that are self-cleaning, self-lubricating, and built for long service life. From concept to assembly, SPL Parts is made with pride in the USA by skilled machinists and welders who are committed to quality, innovation, and performance.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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SPL Parts Adjustable Front Lower Control Arms for G8x BMW M3 / M4 (xDrive AWD) [SPLFLCAG8XIX]

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SPL Parts Adjustable Front Lower Control Arms for G8x BMW M3 / M4 (xDrive AWD)

Features

Specifications

Applications

Notes

Frequently Asked Questions

About SPL Parts

Reviews