Does the SPL FLCA F3X fit xDrive F2X and F3X models?

No. This listing is for RWD F2X and F3X models only. SPL Parts produces a separate FLCA specifically for xDrive AWD F2X and F3X models; the two arms are not interchangeable due to differences in the knuckle and subframe geometry between RWD and xDrive variants. Confirm your drivetrain before ordering.

What is the Double Adjuster, and why does it matter compared to jam nut-style adjustable arms?

The SPL Double Adjuster is machined from 4130 Chromoly, gun-drilled to reduce weight, then electroless nickel-plated for corrosion resistance. It uses SPL's 360-degree rotating clamp to lock down camber and track width settings in one step, without jam nuts. On a conventional adjustable arm, setting alignment requires holding the bearing in the correct orientation while tightening jam nuts simultaneously; a two-person job that is difficult to do precisely. The rotating clamp locks in a single action, making in-field adjustments faster and more repeatable.

What does increasing front track width actually do for handling on the F2X and F3X?

The F3X factory front track width of 60.5 inches and the F2X's 59.9 inches are significantly narrower than the BMW M3's 62.2 inches. SPL's own analysis shows that matching M3 track width on an M340i reduces outer front tire loading by approximately 20 lbs and redistributes it to the inner front tire, resulting in roughly 0.04G of additional peak front grip and a measurable improvement in lap times. The wider track reduces lateral load transfer per unit of cornering force, allowing more available tire grip to be used.

Will installing the FLCAs affect BMW chassis electronics like DSC or iDrive?

No, because these arms include a ride height sensor bracket that maintains the factory sensor location regardless of arm length. Without this bracket, adjusting arm length would shift the sensor position and cause the vehicle's ride height reference to read incorrectly, which can trigger errors or alter the behavior of DSC and adaptive suspension systems. The included bracket prevents that entirely.

What is the NVH impact of these control arms on a daily-driven F3X?

The FLCAs are rated by SPL as a moderate NVH contributor. On smooth roads there is no significant change. On rough roads, road noise and harshness transmitted through the front suspension increases measurably because the large OEM rubber bushing is replaced by a spherical bearing. If spherical caster rod bushings or a spherical tension rod are already installed, all compliant front bushings are eliminated and NVH increases more substantially; as a pronounced noise and felt harshness on impacts rather than a jarring force. Running a high-quality shock absorber and slightly more compliant tire pressure reduces the effect.

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Description

SPL Parts Adjustable Front Lower Control Arms for F2X 2 Series and F3X 3 / 4 Series

The SPL F3X control arms provide roll center, camber, and track width adjustment for the rear-wheel-drive F2X 2 Series and F3X 3 and 4 Series BMW while eliminating bushing deflection for sharpened steering response and driving precision. Running more negative camber greatly improves peak lateral grip by keeping an optimal tire contact patch as the body rolls under cornering load, and it prevents the excessive outer-shoulder wear and heat that comes from a lack of camber. Increasing front track width from the factory 60.5in on the F3X or 59.9in on the F2X toward the M3’s 62.2in further improves handling by shifting tire loading, and lowering the car pushes the roll center down where these arms let you correct it across a wide range of ride heights. Each arm includes a ride height sensor bracket to keep the factory sensor located and the chassis electronics happy. Sold as a pair. For rear-wheel-drive models only.

Features

SPL F3X control arms providing roll center, camber, and track width adjustment while eliminating bushing deflection
Lightweight 6061-T6 billet aluminum construction with blue-anodized titanium hardware to reduce unsprung weight
Electroless-nickel-plated 4130 chromoly Double Adjuster, gun-drilled for weight, with a Rotating Clamp design that locks camber and track width without jam nuts
Low-friction 3-piece Teflon-lined FK sphericals and rod ends with correct ball joint angle for full articulation
Multiple stainless steel roll center spacers included for precise adjustment on lowered cars
Increases front track width from the factory 60.5in on the F3X or 59.9in on the F2X toward the M3’s 62.2in
Includes a ride height sensor bracket to maintain the factory sensor location regardless of arm length

Applications

BMW 2 Series: F22 / F23 | 2014-2021
BMW 3 Series: F30 / F31 / F34 | 2012-2018
BMW 4 Series: F32 / F33 / F36 | 2014-2020

Notes

Front lower control arms are a moderate contributor to NVH; replacing the large OEM rubber bushing brings a small to moderate increase in transmitted road noise and harshness
SPL components are made to order in the USA; build time is confirmed at the time of order

Frequently Asked Questions

What vehicles do the SPL F3X control arms fit? The SPL F3X control arms (FLCA F3X) fit the rear-wheel-drive F22 and F23 2 Series (2014-2021), F30, F31, and F34 3 Series (2012-2018), and F32, F33, and F36 4 Series (2014-2020). They are for RWD cars, so confirm your chassis and drivetrain before ordering.
Do these fit xDrive/AWD cars? No. The SPL F3X control arms are the rear-wheel-drive version. xDrive/AWD models use the separate SPL FLCA F3IX kit, so verify your car is RWD before ordering this one.
What do these control arms adjust? The SPL F3X control arms provide adjustable camber, roll center, and track width. That lets you add negative camber for cornering grip and even tire wear, widen front track toward M3 spec, and correct the roll center drop that comes with lowering the car.
How much can they widen the front track? The SPL F3X control arms can increase front track width from the factory 60.5in on the F3X or 59.9in on the F2X toward the M3’s 62.2in. Widening the track shifts tire loading for improved handling balance.
Do they keep the ride height sensor working? Yes. Each of the SPL F3X control arms includes a ride height sensor bracket that maintains the factory sensor location regardless of arm length, so the BMW chassis electronics continue to read correctly after installation.
Will these add noise or vibration? Somewhat. The front lower control arms are a moderate contributor to NVH, so replacing the large OEM rubber bushing brings a small to moderate increase in road noise and harshness. Most owners accept the trade-off for the sharper response the SPL F3X control arms provide.

About SPL Parts

SPL Parts designs and manufactures performance suspension components built around the principles of strength, light weight, low friction, and precision. From full racing to high-performance street applications, SPL suspension products provide the adjustability and added performance that custom alignment work demands. High-quality construction and innovative design are why SPL components are chosen by top race teams as well as by drivers who want serious alignment capability on their high-performance street cars. Bulletproof Automotive carries the SPL Parts catalog for street, track, and competition builds.

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 F2X BMW 2 Series and F3X 3 / 4 Series (RWD) [SPL FLCA F3X]

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SPL Parts Adjustable Front Lower Control Arms for F2X 2 Series and F3X 3 / 4 Series

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Frequently Asked Questions

About SPL Parts

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