SPL Parts SPL RKB FRS Rear Knuckle Bushings for 13-24 Scion FR-S, Toyota 86, BRZ

Vehicle Fitment

• 2013-2016 Scion FR-S (ZN6; RWD)
• 2013-2020 Toyota 86 (ZN6; RWD)
• 2022-2024 Toyota GR86 (ZN8; RWD)
• 2013-2024 Subaru BRZ (ZC6/ZD8; RWD)

Fitment Notes

• Replaces the factory rubber bushing located in the rear knuckle where the traction arm connects
• Designed for performance vehicles where reduced deflection improves suspension feedback
• Sold as a pair - one per left/right knuckle
• Alignment recommended after installation for optimal handling

Features

• Upgraded low-friction PTFE-lined FK spherical bearings for smoother articulation
• Reduces deflection under heavy acceleration and braking loads for improved geometry control
• Aluminum housing precision cut to ±0.001" tolerance for accurate fitment and durability
• Enhances throttle and braking response through more direct suspension feedback
• Suppresses unwanted suspension bind that can dull handling performance
• Lightweight design reduces unsprung weight compared to OEM rubber bushings
• Durable construction built to withstand high-load driving conditions on street or track
• Made in the USA with high-quality materials for long service life

Specifications

• Brand: SPL Parts
• Part Number: SPL RKB FRS
• Application: Rear knuckle bushings at traction arm connection point
• Material: FK PTFE-lined spherical bearings, 6061-T6 aluminum housing
• Position: Rear suspension knuckle (left & right)
• Fitment: Scion FR-S, Toyota 86/GR86, Subaru BRZ, Subaru WRX/STI
• Drivetrain: RWD / AWD where applicable

Included Components

• 2x Rear knuckle bushings with PTFE-lined spherical bearings

Product Description

The SPL Parts SPL RKB FRS Rear Knuckle Bushings are a performance-oriented suspension upgrade designed to replace the stock rubber bushing in the rear knuckle where the traction arm connects. By swapping out the compliant OEM bushing for a low-friction PTFE-lined spherical bearing, this upgrade reduces unwanted deflection during heavy acceleration and braking - helping maintain more consistent suspension geometry and improving tire feedback.

Precision engineered with a 6061-T6 aluminum housing and high-quality FK bearings, the SPL RKB FRS enhances throttle response, braking stability, and handling precision without binding during dynamic suspension movement. This kit is ideal for enthusiasts driving Scion FR-S, Toyota 86, Toyota GR86, Subaru BRZ, or Subaru WRX/STI models, whether on spirited street routes or competitive track days. Sold as a pair, the bushings install directly into the knuckle and, when paired with a proper alignment, contribute to sharper, more predictable handling traits.