Why does this tie rod end require Sport Adaptive Steering on G2X and G42 models?

BMW uses two different tie rod stud diameters on the G2X and G42 platforms. Models with Sport Adaptive Steering (option code 2LV) use a larger 16mm tie rod stud; models without Sport Adaptive Steering use a 14mm stud. The SPL TRE G8X is built around the 16mm stud and will not fit the 14mm version. All M model cars; M2, M3, M4, M340i, M440i, M240i; come standard with Sport Adaptive Steering and are compatible with this part without any trim verification. Standard 3 Series and 4 Series trims require the 2LV option code to be confirmed before ordering.

How do I check if my G2X or G42 has the Sport Adaptive Steering option?

Option code 2LV identifies Sport Adaptive Steering on the G2X and G42 platforms. It can be found on the BMW vehicle specification document from the original sale, through the BMW ConnectedDrive vehicle options lookup by VIN, or from your BMW dealer who can check the build data using your VIN. If the option code is not present, the car uses the 14mm stud and the SPL TRE E9X is the correct tie rod end.

Is this the same tie rod end as the SPL TRE G29 used on the Toyota GR Supra A90 and BMW Z4 G29?

No. While the A90 Supra, G29 Z4, G2X, and G42 share a common platform heritage from BMW, the G8X M3/M4/M2 and G2X/G42 models use the 16mm tie rod stud with Sport Adaptive Steering, while the Supra A90 and Z4 G29 use a different configuration covered by the SPL TRE G29. Confirm the correct part for your specific car before ordering.

What does bumpsteer feel like on a lowered G8X M3 or M4?

Bumpsteer is experienced as a pull, twitch, or change in the steering that the driver didn't input; it happens because the toe angle is changing as the suspension moves through its travel. Over track curbing, the steering input required to stay on line changes as the front suspension loads and unloads. Under braking into a corner, an unexpected steering response can make the entry feel less stable than expected. Correcting bumpsteer with pivot relocation removes that unpredictability; the steering responds only to what the driver is asking for.

Are these tie rod ends compatible with the SPL FLCA G8X front lower control arms?

Yes. SPL designs the TRE G8X and FLCA G8X as complementary products. When the front lower control arm length or geometry is changed, the bumpsteer characteristics change as well. Installing both the FLCA and the bumpsteer-adjustable tie rod ends allows the alignment technician to address both the geometry adjustment and the bumpsteer correction simultaneously for a fully optimized front suspension setup.

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Description

SPL Parts Adjustable Bumpsteer Tie Rod Ends for G8x BMW M2 / M3 / M4

The SPL TRE G8X allows the tie rod end pivot to be relocated using the included 304 stainless steel 1/8-inch spacers to correct that mismatch. Moving the pivot brings the tie rod arc back into alignment with the actual suspension arc at the car’s ride height, resulting in less dynamic toe change through the suspension’s range of motion. Steering feel over rough roads and track curbing becomes more predictable, front tire shoulder wear from bumpsteer-induced toe cycling is reduced, and the car’s response to steering inputs stays consistent rather than varying with suspension position. The tie rod body is 6061-T6 aluminum with a 4140 Chromoly steel tapered stud; at 1.49lbs per side, it is 3% lighter than the OEM tie rod end. Ti-6Al-4V titanium hardware anodized in blue handles the clamp force without adding mass. PTFE-lined FK bearings are maintenance-free and self-cleaning. SPL specifically notes these tie rod ends are not a significant NVH contributor; they improve the driving experience by reducing bumpsteer rather than introducing noise or harshness.

Features

Allows front tie rod end pivot relocation via included 304 stainless steel 1/8-inch spacers; corrects bumpsteer from lowered ride height, modified caster, or front lower arm geometry changes
6061-T6 aluminum tie rod body with 4140 Chromoly steel tapered stud; 1.49lbs per side; 3% lighter than OEM
Maintenance-free PTFE-lined FK bearings made in the USA; self-cleaning; no grease required
Ti-6Al-4V titanium hardware anodized in blue; reduces mass without compromising clamp force
Not a significant NVH contributor; improves driving experience by reducing bumpsteer

Specifications

Body Material: Gun-drilled 2024-T351 aluminum
Shank: Heat-treated 4340 chromoly with electroless nickel plating
Heim Joint: PTFE-lined FK 3-piece rod end
Spacers: Multiple stainless steel thicknesses for pivot tuning
Origin: Made in the USA

Applications

BMW M2: G87 | 2023-present
BMW M3: G80, G81 | 2021-present
BMW M4: G82, G83 | 2021-present

Notes

Installation Instruction
Compatible with G2x and G42 only with Sport Adaptive Steering (2LV option code)
SPL components are made-to-order in the USA; build time will be confirmed at the time of order.

Frequently Asked Questions

Why does this tie rod end require Sport Adaptive Steering on G2x and G42 models? BMW uses two different tie rod stud diameters on the G2x and G42 platforms. Models with Sport Adaptive Steering (option code 2LV) use a larger 16mm tie rod stud; models without Sport Adaptive Steering use a 14mm stud. The SPL TRE G8X is built around the 16mm stud and will not fit the 14mm version. All M model cars; M2, M3, M4, M340i, M440i, M240i; come standard with Sport Adaptive Steering and are compatible with this part without any trim verification. Standard 3 Series and 4 Series trims require the 2LV option code to be confirmed before ordering.
How do I check if my G2x or G42 has the Sport Adaptive Steering option? Option code 2LV identifies Sport Adaptive Steering on the G2x and G42 platforms. It can be found on the BMW vehicle specification document from the original sale, through the BMW ConnectedDrive vehicle options lookup by VIN, or from your BMW dealer who can check the build data using your VIN. If the option code is not present, the car uses the 14mm stud and the SPL TRE E9X is the correct tie rod end.
Is this the same tie rod end as the SPL TRE G29 used on the Toyota GR Supra A90 and BMW Z4 G29? No. While the A90 Supra, G29 Z4, G2x, and G42 share a common platform heritage from BMW, the G8x M3 / M4 / M2 and G2x / G42 models use the 16mm tie rod stud with Sport Adaptive Steering, while the Supra A90 and Z4 G29 use a different configuration covered by the SPL TRE G29. Confirm the correct part for your specific car before ordering.
What does bumpsteer feel like on a lowered G8x M3 or M4? Bumpsteer is experienced as a pull, twitch, or change in the steering that the driver didn’t input; it happens because the toe angle is changing as the suspension moves through its travel. Over track curbing, the steering input required to stay on line changes as the front suspension loads and unloads. Under braking into a corner, an unexpected steering response can make the entry feel less stable than expected. Correcting bumpsteer with pivot relocation removes that unpredictability; the steering responds only to what the driver is asking for.
Are these tie rod ends compatible with the SPL FLCA G8X front lower control arms? Yes. SPL designs the TRE G8X and FLCA G8X as complementary products. When the front lower control arm length or geometry is changed, the bumpsteer characteristics change as well. Installing both the FLCA and the bumpsteer-adjustable tie rod ends allows the alignment technician to address both the geometry adjustment and the bumpsteer correction simultaneously for a fully optimized front suspension setup.

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 Tie Rod Ends for G8x BMW M2 / M3 / M4 [SPLTREG8X]

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SPL Parts Adjustable Bumpsteer Tie Rod Ends for G8x BMW M2 / M3 / M4

Features

Specifications

Applications

Notes

Frequently Asked Questions

About SPL Parts

Reviews