SPL Parts 2020+ Toyota GR Supra (A90) / 2019+ BMW Z4 (G29) Rear Toe Links w/Eccentric Lockouts

Race-Proven Rear Toe Adjustment for the Toyota GR Supra and BMW Z4 G29 Platform

The SPL RTAEL G29 Rear Toe Links with Eccentric Lockout Kit are purpose-built for the 2020+ Toyota GR Supra and 2019+ BMW Z4, as well as the BMW G20/G21/G22/G23/G24 3/4 Series and G42 2 Series that share the same rear subframe architecture. The factory eccentric washer and bolt method for toe adjustment lacks precision and slips under track loads. The SPL RTAEL G29 replaces that hardware with a length-adjustable 2024 aluminum link and CNC-machined 6061-T6 aluminum lockout washers secured by Grade 10.9 bolts, so your rear alignment stays locked regardless of cornering forces. The 360-degree rotating clamp system makes on-car adjustments quick and tool-accessible with only a 3/16" Allen key.

Features and Benefits

• Gun-drilled 2024 Aluminum links reduce unsprung mass for more responsive suspension feedback
• 6061-T6 Aluminum rotating clamp design allows fast, precise on-car toe adjustment
• Blue anodized Ti-6Al-4V Titanium socket head cap screws for lightweight, corrosion-resistant clamping
• 3-piece PTFE-lined FK Heim joints and rod ends, made in Connecticut, eliminate bushing deflection
• Teflon liner rated from -65 to 325 degrees Fahrenheit for both street and track reliability
• Included eccentric lockout washers (6061-T6 aluminum) permanently delete the slip-prone OEM eccentric system
• Grade 10.9 hex cap bolts and lock nuts ensure zero-slip alignment retention
• Arm can be unbolted and reinstalled while preserving toe setting
• Sold as a pair with all hardware
• Made in the USA

Fitment

Specifications

What's Included

• 2 x rear toe links (gun-drilled 2024 aluminum, anodized black)
• Eccentric lockout kit (6061-T6 aluminum lockout washers)
• Grade 10.9 hex cap bolts and lock nuts
• Blue anodized Ti-6Al-4V Titanium socket head cap screws
• Installation instructions

Frequently Asked Questions

What vehicles does the SPL RTAEL G29 fit beyond the GR Supra and Z4?
The SPL RTAEL G29 fits all BMW models sharing the G29 rear subframe architecture, including the 2019+ G20/G21 3 Series, G22/G23 4 Series, and 2021+ G42 2 Series. If your BMW uses the same rear subframe bolt pattern, these links are compatible.

Why replace the OEM eccentric toe adjustment system?
The OEM eccentric bolt provides a small amount of toe adjustment but is prone to slipping under sustained cornering load. The SPL RTAEL G29 lockout washers replace the eccentric hardware entirely, locking the toe arm in place with Grade 10.9 fasteners so your alignment cannot shift during aggressive driving.

Do the FK rod ends affect ride quality or NVH?
The PTFE-lined FK rod ends provide quiet operation comparable to OEM rubber bushings in everyday driving. The Teflon liner absorbs minor vibration and eliminates the metallic noise associated with plain steel spherical bearings.

What tools are needed for installation?
You will need a 3/16" Allen key, common metric sockets (17 mm, 18 mm, 19 mm), and a calibrated torque wrench. A lift or jack stands are required to safely access the rear subframe.

Can I install the SPL RTAEL G29 without a professional alignment?
The arms must be installed at approximately OEM length and a professional four-wheel alignment is required after installation. The rotating clamp system allows fine tuning at the alignment rack without removing the arm from the vehicle.

What is the operating temperature range of the FK rod end liners?
The PTFE liner is rated from -65 to 325 degrees Fahrenheit, making the SPL RTAEL G29 suitable for both extreme cold-weather street use and sustained track use where temperatures rise significantly.

Will installing the SPL RTAEL G29 void my factory warranty?
Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your warranty simply because you installed an aftermarket suspension component. The manufacturer must demonstrate that the aftermarket part directly caused any warranty claim. Consult your dealer for details specific to your vehicle.

Are these links suitable for both street and track use?
Yes. The SPL RTAEL G29 is designed for high-performance street cars and dedicated track builds. The materials and bearing specification are the same regardless of application, providing consistent performance across all driving environments.

Installation Instructions

1. Lift the vehicle safely and support on jack stands; remove the rear wheels.
2. Support the rear hub/knuckle assembly to prevent suspension droop.
3. Remove the OEM rear toe link by unbolting the subframe-side eccentric bolt and the knuckle-side fastener.
4. Remove the OEM eccentric bolt and washer from the subframe bracket and discard.
5. Install the SPL eccentric lockout washers in place of the OEM eccentrics, securing with the supplied Grade 10.9 bolt and lock nut. Confirm the washers cannot rotate in the subframe tabs.
6. Thread the SPL RTAEL G29 link into position with the rod end into the knuckle and the clamp end engaging the lockout hardware. Install all fasteners hand-tight.
7. Torque all fasteners to OEM specification (100 Nm / 74 ft-lbs at the subframe; verify knuckle-side torque in your service manual).
8. Set toe by loosening the 3/16" Allen clamp screws, rotating the center link, and re-tightening clamps.
9. Reinstall wheels, lower the vehicle, and schedule a four-wheel alignment.