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  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
  • SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
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SPL Parts Rear Spherical Knuckle Bushing (REAR): Subaru BRZ (13-20), Subaru WRX (15+) & Toyota 86 (17-20), Toyota GR86 (22+)

SPL Parts Rear Spherical Knuckle Bushing (REAR): Subaru BRZ (13-20), Subaru WRX (15+) & Toyota 86 (17-20), Toyota GR86 (22+)

The SPL Parts Rear Spherical Knuckle Bushing replaces the factory rubber bushing with a low-friction PTFE-lined spherical bearing, eliminating deflection for improved throttle and braking response. Designed for 2013-2020 Subaru BRZ, 2017-2020 Toyota 86, and 2022-2024 Toyota GR86, it enhances driver feedback and reduces wheel hop. Crafted from 6061-T6 aluminum with precision tolerances, this maintenance-free bushing ensures smooth articulation and long-lasting performance.
Part # SPL RKB FRS

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The SPL Parts Rear Spherical Knuckle Bushing replaces the factory rubber bushing with a low-friction PTFE-lined spherical bearing, eliminating deflection for improved throttle and braking response. Designed for 2013-2020 Subaru BRZ, 2017-2020 Toyota 86, and 2022-2024 Toyota GR86, it enhances driver feedback and reduces wheel hop. Crafted from 6061-T6 aluminum with precision tolerances, this maintenance-free bushing ensures smooth articulation and long-lasting performance.

SPL Parts Rear Spherical Knuckle Bushing

2013–2020 Subaru BRZ / 2017–2020 Toyota 86 / 2022–2024 Toyota GR86

SPL RKB FRS

Overview:

The SPL Parts Rear Spherical Knuckle Bushing is a precision-engineered upgrade designed to replace the factory rubber knuckle bushings on select Subaru and Toyota sports cars. Specifically crafted for the Subaru BRZ (2013–2020), Toyota 86 (2017–2020), and Toyota GR86 (2022–2024), this bushing enhances suspension performance by eliminating the deflection and compliance inherent in OEM rubber components.

By swapping out the soft rubber for a low-friction PTFE-lined spherical bearing, the SPL rear knuckle bushing significantly improves throttle and braking response. This upgrade is ideal for enthusiasts seeking sharper handling, reduced wheel hop, and more direct feedback from the road without sacrificing daily drivability.

Key Features:

Engineered for performance and durability, the SPL rear spherical knuckle bushing offers several key benefits:

  • Replaces OEM rubber bushing with a PTFE-lined spherical bearing to eliminate deflection under heavy acceleration and braking
  • Improves suspension geometry consistency for enhanced handling precision
  • Reduces wheel hop for smoother launches and improved traction
  • Provides better driver feedback and overall response from the tire
  • Constructed with the largest possible FK bearing for increased longevity and reduced noise, vibration, and harshness (NVH)
  • Lightweight design: 0.674 lbs (306g) total, or 0.337 lbs (153g) per side
  • Maintenance-free PTFE-lined spherical bearings for long-lasting performance
  • Precision-machined 6061-T6 aluminum housing with tight +/- 0.001" tolerances for perfect fitment
  • Proudly made, engineered, and assembled in the USA

Construction & Design:

The SPL rear knuckle bushing is built with high-quality materials to ensure durability and performance. The bearing shells are crafted from 6061-T6 aluminum, a lightweight yet strong alloy commonly used in aerospace and motorsports applications. This aluminum housing is precision cut to extremely tight tolerances, guaranteeing a secure and exact fit in the knuckle assembly.

Inside, the spherical bearing features steel construction lined with PTFE (polytetrafluoroethylene), a low-friction material that allows smooth articulation of the knuckle without binding. This design eliminates the compliance and deformation issues typical of rubber bushings, maintaining suspension geometry under load and improving overall vehicle dynamics.

Installation & Fitment:

The SPL rear spherical knuckle bushing is a direct replacement for the factory rear knuckle bushings on Subaru BRZ models from 2013 to 2020, Toyota 86 models from 2017 to 2020, and Toyota GR86 models from 2022 to 2024. Installation requires standard suspension disassembly tools and moderate mechanical skill. No modifications to the knuckle or suspension components are necessary, making it a straightforward upgrade for enthusiasts and professional installers alike.

Once installed, the bushing requires no maintenance, providing a long-lasting solution that enhances vehicle handling and driver confidence.

What's Included:

  • One pair of SPL rear spherical knuckle bushings (left and right sides)
  • PTFE-lined FK spherical bearings pre-installed in aluminum housings
  • Installation instructions

Ideal For:

This product is ideal for Subaru BRZ and Toyota 86/GR86 owners who want to improve their car’s throttle response, braking stability, and overall suspension precision. It is especially suited for drivers who participate in spirited driving, track days, or autocross events and demand sharper handling without compromising daily drivability. The maintenance-free design also appeals to enthusiasts seeking a durable, long-term upgrade to their suspension system.

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Part #: SPL RKB FRS
Brand: SPL Parts
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