SPL Parts 2013+ Subaru BRZ/Toyota 86 / 2015+ Subaru WRX/STI Rear Toe Arms w/Eccentric Lockout

Precision Rear Toe Control for Subaru BRZ, Toyota 86, and WRX Platforms

The SPL RTAEL FRS Rear Toe Arms with Eccentric Lockout Kit deliver motorsport-grade alignment control to the Subaru BRZ, Scion FR-S, Toyota 86, GR86, Subaru WRX, and WRX STI. Factory rear toe eccentrics slip under hard cornering, causing alignment drift and inconsistent handling. The SPL RTAEL FRS replaces the OEM eccentric bolt system with precision CNC-machined aluminum lockout plates and a length-adjustable arm, giving you a locked, repeatable rear toe setting for street use, autocross, or dedicated track days. At 2.63 lbs (1.19 kg) per arm, the SPL RTAEL FRS is 18% lighter than the OEM arm while offering a far greater adjustment range.

Features and Benefits

• Gun-drilled 2024 Aluminum main links reduce unsprung weight for improved suspension response
• Hollow 6061-T6 Aluminum arms finished in anodized black for corrosion resistance and clean appearance
• 360-degree rotating clamp design allows toe adjustment without disturbing bearing orientation
• Ti-6Al-4V Titanium 1/4-20 socket head cap screws (anodized blue) secure clamps with precise torque
• 3-piece PTFE-lined FK Bearings, made in Connecticut, eliminate bushing deflection under load
• Teflon liner rated from -65 to 325 degrees Fahrenheit for reliable street and track operation
• Included eccentric lockout kit replaces slip-prone OEM eccentrics with 6061-T6 aluminum plates and Grade 10.9 fasteners
• Arm can be removed and reinstalled without losing alignment settings
• Sold as a pair with all installation hardware included
• Made in the USA

Fitment

Specifications

What's Included

• 2 x rear toe arms (anodized black)
• Eccentric lockout kit (6061-T6 aluminum lockout plates)
• Grade 10.9 steel bolts and lock nuts for lockout plates
• Ti-6Al-4V Titanium 1/4-20 socket head cap screws (anodized blue)
• Installation instructions

Frequently Asked Questions

Why do I need the SPL RTAEL FRS instead of just adjustable toe arms?
The SPL RTAEL FRS bundles the adjustable toe arm with the eccentric lockout kit. The OEM eccentric bolt is known to slip under hard cornering loads, moving your toe setting even after a fresh alignment. The lockout kit eliminates that variable entirely so your alignment stays exactly where you set it.

Will these arms work on a stock-height vehicle?
Yes. While the SPL RTAEL FRS is especially useful on lowered cars that need extended adjustment range to bring toe back into spec, the eccentric lockout function benefits any driver who wants a stable, repeatable rear alignment at any ride height.

Do the PTFE-lined FK bearings add noise to the cabin?
FK bearings with Teflon liners are engineered for quiet operation. The self-lubricating liner minimizes friction and eliminates the creaking associated with dry metal rod ends. Most users report no noticeable NVH increase over OEM bushings.

What tools are needed to install the SPL RTAEL FRS?
You will need a 3/16" Allen key for the clamp screws, a 17 mm socket for the hub-side fastener, a 19 mm and 22 mm socket/wrench set for the subframe hardware, and a torque wrench. A jack stand to support the hub during installation is also recommended.

What are the torque specs for installation?
Torque the subframe-side bolt and nut to 74 ft-lbs. Torque the hub-side nut to 44 ft-lbs. Tighten the 1/4"-20 clamp screws to a maximum of 150 in-lbs. Do not exceed this value.

How do I adjust toe after installation?
Loosen the 1/4"-20 titanium clamp screws, rotate the center arm clockwise to increase toe-in or counterclockwise to increase toe-out, then re-tighten the clamps in sequence working from the outside inward. A professional alignment is recommended after any adjustment.

Will installing these arms void my vehicle warranty?
Under the Magnuson-Moss Warranty Act, a vehicle manufacturer or dealer cannot void your factory warranty simply because you installed an aftermarket part unless they can demonstrate that the part caused the failure in question. Consult your dealer for specifics on your individual warranty coverage.

Are the SPL RTAEL FRS arms compatible with coilovers and aftermarket springs?
Yes. The extended adjustment range of the SPL RTAEL FRS makes it particularly well suited for use with coilovers and lowering springs, which often push the rear toe outside the OEM eccentric adjustment limit.

Installation Instructions

1. Safely raise and support the vehicle on jack stands; remove the rear wheels.
2. Support the rear hub assembly with a floor jack or jack stand to prevent suspension droop.
3. Remove the OEM rear toe arm by loosening the 19 mm eccentric adjustment bolt at the subframe and the 17 mm nut at the hub-side ball joint.
4. Tap the hub-side ball joint stud free using a rubber mallet if needed.
5. Install the eccentric lockout plates on the outside of the subframe tabs in place of the OEM eccentric hardware, using the supplied Grade 10.9 bolt and lock nut. Verify the plates seat against the OEM subframe indentation and cannot rotate.
6. Slide the new arm into position, threading the hub-side stud through the knuckle and the subframe end through the lockout hardware.
7. Install all fasteners finger-tight before torquing. Torque the subframe bolt/nut to 74 ft-lbs and the hub-side nut to 44 ft-lbs.
8. Set the desired toe by loosening the 1/4"-20 titanium clamp screws, rotating the arm, then tightening the clamp screws to 150 in-lbs maximum working from the outside in.
9. Reinstall the wheel, lower the vehicle, and have a four-wheel alignment performed by a qualified alignment technician.