How is the SPL RTA F3X different from the factory toe arm on the F2X and F3X?

The factory toe arm uses an eccentric bolt and washer that rotates through a limited arc to provide a small amount of toe adjustment. That range was designed for aligning the car at factory ride height within manufacturer tolerance; not for performance alignments or lowered builds where the required toe target often falls outside what the eccentric can reach. The RTA F3X replaces the arm with one that has a much wider adjustment range, precise locking through SPL's rotating clamp system, and FK spherical bearings that eliminate the rubber deflection the factory bushing introduces under load.

Should I pair these toe arms with the SPL eccentric lockout kit?

For track use, yes. The eccentric lockout kit eliminates the factory eccentric bolt entirely and replaces it with hardware that mechanically prevents rotation under cornering load. Without the lockout, the factory eccentric remains in the subframe and can still slip under high lateral loads even after the toe arm is upgraded. SPL Parts offers the lockout kit separately or as a pre-bundled package with the RTA F3X; the bundle is the complete rear toe solution for track-prepared F2X and F3X builds.

Do these toe arms pair with the SPL RUA F3X rear upper arms?

Yes, and this is the recommended combination. The RTA F3X provides rear toe adjustment; the SPL RUA F3X provides rear camber adjustment. On a lowered F2X or F3X, both toe and camber move outside the factory eccentric ranges simultaneously. Installing both arms gives the alignment technician independent control over both geometry settings, which is the complete rear alignment solution for these platforms.

How long does delivery take for the SPL RTA F3X?

Many SPL Parts are made to order. Allow 3 to 6 weeks for production and delivery. Plan build timelines and track schedules accordingly before placing the order.

Are replacement rod ends available if one wears out?

Yes. SPL Parts offers replacement rod ends for the RTA F3X in both left and right hand thread. Contact SPL Parts directly or use the links provided on the SPL Parts product page to source the correct replacement.

Description

Additional Info

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BP PRICING DIFFERENCE

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Description

SPL Parts Adjustable Bumpsteer Rear Toe Links for F2x / F3x BMW 1, 2, 3, and 4 Series

The SPL Parts RTA F3X solves the range problem and the precision problem simultaneously. Gun-drilled 2024 aluminum main links provide the extended adjustment range the factory eccentric cannot offer, while the 360-degree rotating clamp locks the setting without jam nuts; one 3/16-inch allen key, one step, done. Blue anodized titanium socket head cap screws handle the clamp hardware, reducing unsprung weight without compromising clamping strength. The result is a toe arm that can reach any realistic alignment target for the F2x or F3x, at any ride height, and hold it precisely. The FK spherical rod ends manufactured in Connecticut add the geometry consistency piece. The factory toe arm uses a rubber bushing that deflects under lateral and longitudinal loads, allowing rear toe to change dynamically mid-corner and under braking. The Teflon-lined FK bearings are self-lubricating, self-cleaning, and chemically bonded to the inner race; they articulate freely without deflecting, holding rear toe at its aligned value under all load conditions from -65°F to 325°F. No grease required, no maintenance, and no toe movement when the suspension is working hard.

Features

Extended rear toe adjustment range beyond the factory eccentric bolt; necessary for lowered F2x and F3x builds and performance alignment targets
Gun-drilled 2024 aluminum main links; black anodized for corrosion resistance; gun-drilling reduces unsprung weight without sacrificing structural integrity
SPL exclusive 360-degree rotating clamp with 6061-T6 aluminum clamp body and blue anodized titanium socket head cap screws; locks toe setting precisely without jam nuts
FK spherical rod ends manufactured in Connecticut; Teflon liner chemically bonded to inner race; self-lubricating, self-cleaning, zero bushing deflection under load
Teflon liner operating temperature range: -65°F to 325°F; reliable for sustained street and track use without maintenance
Eliminates dynamic toe change from rubber bushing deflection under cornering, braking, and acceleration loads
Optional eccentric lockout kit available separately or as a pre-bundled package with these toe arms for mechanical prevention of eccentric bolt slip
Pairs naturally with the SPL RUA F3X rear upper arms for a complete rear alignment adjustment solution

Specifications

Body Material: 2024-T351 aluminum (gun-drilled, black anodized)
Heim Joints: PTFE-lined FK USA spherical bearings
Toe Adjustment: Wide range, past OEM eccentric limits
Bumpsteer Adjustment: Yes — fine spacers included
Origin: Made in the USA

Applications

BMW 116d: F20, F21 | 2012-2019
BMW 118d: F20, F21 | 2012-2019
BMW 120d: F20, F21 | 2012-2019
BMW 125d: F20, F21 | 2012-2019
BMW 114i: F20, F21 | 2012-2019
BMW 116i: F20, F21 | 2012-2019
BMW 118i: F20, F21 | 2012-2019
BMW 120i: F20, F21 | 2012-2019
BMW 125i: F20, F21 | 2012-2019
BMW 128ti: F20, F21 | 2019-2019
BMW 135i: F20, F21 | 2012-2016
BMW 220d: F22, F23 | 2014-2021
BMW 225d: F22, F23 | 2014-2021
BMW 220i: F22, F23 | 2014-2021
BMW 228i: F22, F23 | 2014-2016
BMW 230i: F22, F23 | 2016-2021
BMW 240i: F22, F23 | 2016-2021
BMW 316d: F30, F31 | 2012-2019
BMW 318d: F30, F31 | 2012-2019
BMW 320d: F30, F31 | 2012-2019
BMW 325d: F30, F31 | 2012-2019
BMW 330d: F30, F31 | 2012-2019
BMW 335d: F30, F31 | 2012-2019
BMW 330e: F30, F31 | 2015-2019
BMW 316i: F30, F31 | 2012-2019
BMW 318i: F30, F31 | 2012-2019
BMW 320i: F30, F31 | 2012-2019
BMW 328i: F30, F31 | 2012-2016
BMW 330i: F30, F31 | 2016-2019
BMW 335i: F30, F31 | 2012-2015
BMW 340i: F30, F31 | 2015-2019
BMW 420d: F32, F33, F36 | 2014-2020
BMW 425d: F32, F33, F36 | 2014-2020
BMW 430d: F32, F33, F36 | 2014-2020
BMW 435d: F32, F33, F36 | 2014-2020
BMW 420i: F32, F33, F36 | 2014-2020
BMW 428i: F32, F33, F36 | 2014-2016
BMW 430i: F32, F33, F36 | 2016-2020
BMW 435i: F32, F33, F36 | 2014-2016
BMW 440i: F32, F33, F36 | 2016-2020
BMW M135i: F20, F21 | 2012-2016
BMW M140i: F20, F21 | 2016-2019
BMW M235i: F22, F23 | 2014-2016
BMW M240i: F22, F23 | 2016-2021
BMW M340i: F30, F31 | 2019-2019

Notes

Installation Instructions
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

How is the SPL RTA F3X different from the factory toe arm on the F2x and F3x? The factory toe arm uses an eccentric bolt and washer that rotates through a limited arc to provide a small amount of toe adjustment. That range was designed for aligning the car at factory ride height within manufacturer tolerance; not for performance alignments or lowered builds where the required toe target often falls outside what the eccentric can reach. The RTA F3X replaces the arm with one that has a much wider adjustment range, precise locking through SPL’s rotating clamp system, and FK spherical bearings that eliminate the rubber deflection the factory bushing introduces under load.
Should I pair these toe arms with the SPL eccentric lockout kit? For track use, yes. The eccentric lockout kit eliminates the factory eccentric bolt entirely and replaces it with hardware that mechanically prevents rotation under cornering load. Without the lockout, the factory eccentric remains in the subframe and can still slip under high lateral loads even after the toe arm is upgraded. SPL Parts offers the lockout kit separately or as a pre-bundled package with the RTA F3X; the bundle is the complete rear toe solution for track-prepared F2x and F3x builds.
Do these toe arms pair with the SPL RUA F3X rear upper arms? Yes, and this is the recommended combination. The RTA F3X provides rear toe adjustment; the SPL RUA F3X provides rear camber adjustment. On a lowered F2xor F3x, both toe and camber move outside the factory eccentric ranges simultaneously. Installing both arms gives the alignment technician independent control over both geometry settings, which is the complete rear alignment solution for these platforms.
How long does delivery take for the SPL RTA F3X? Many SPL Parts are made to order. Allow 3 to 6 weeks for production and delivery. Plan build timelines and track schedules accordingly before placing the order.
Are replacement rod ends available if one wears out? Yes. SPL Parts offers replacement rod ends for the RTA F3X in both left and right hand thread. Please contact bulletproof sales team.

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 Bumpsteer Rear Toe Links for F2x / F3x BMW 1, 2, 3, and 4 Series [SPLRTAF3X]

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SPL Parts Adjustable Bumpsteer Rear Toe Links for F2x / F3x BMW 1, 2, 3, and 4 Series

Features

Specifications

Applications

Notes

Frequently Asked Questions

About SPL Parts

Reviews