What is the main benefit of replacing the stock rubber bushings with spherical bearings?

Replacing the stock rubber bushings with spherical bearings eliminates deflection under heavy acceleration and braking. This leads to more stable suspension geometry, improved driver feedback, and a more responsive feel from the rear of the car.

Are these bushings maintenance-free?

Yes, the PTFE-lined FK spherical bearings used in this kit are maintenance-free. The PTFE liner helps reduce friction and wear, contributing to their longevity.

What materials are used in the construction of these bushings?

The bearing shells are made from durable 6061-T6 aluminum, and they house steel spherical bearings that are lined with PTFE. This combination is chosen for its strength, low friction, and precise fitment.

SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing

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Specifications

Brand: SPL Parts
Part #: SPL RKB FRS
UPC: SPLRKBFRS

SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing

Name: SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
Brand: SPL Parts
Price: 162.11 USD
Availability: InStock

$162.11

Only 2 left in stock

SPL Parts rear knuckle bushings for Subaru BRZ, WRX, and Toyota 86/GR86. Spherical bearings improve response and reduce deflection.

Key Features

Fits Scion FR-S, Subaru BRZ, Subaru WRX, Subaru WRX STI, Toyota 86, and Toyota GR86.
Replaces stock rubber knuckle bushings with low-friction PTFE-lined spherical bearings.
Eliminates deflection under acceleration and braking for improved geometry control.
Allows the knuckle to articulate smoothly, preventing binding.
Improves driver feedback and overall vehicle response.
Features US-made FK spherical bearings with a PTFE liner for longevity and reduced NVH.

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Will this fit your vehicle?

Product Details

When you're pushing your Subaru BRZ, WRX, or Toyota 86 hard, especially during spirited driving or track days, the stock rubber bushings in the rear knuckle can flex more than you'd like. This kit replaces those rubber bushings with low-friction, PTFE-lined spherical bearings from FK, housed in precision-machined 6061-T6 aluminum. This setup is designed to eliminate that unwanted deflection, which can lead to geometry changes under load, and prevent binding so the knuckle can move more freely.

By getting rid of the rubber's flex, you'll notice a more direct connection to the road. The car will feel more responsive when you get on the throttle or hit the brakes, and you might even see reduced wheel hop. These bearings are maintenance-free and built to last, with the aluminum housing cut to tight tolerances to ensure a solid fit. They're also surprisingly lightweight, with each side weighing in at just over a third of a pound.

This kit is a solid option for drivers looking for improved feedback and more consistent handling from their rear suspension. It's designed to fit a range of popular sports cars, including the Scion FR-S, Subaru WRX STI, and Toyota GR86, among others.