SPL Parts Rear Spherical Knuckle Bushing (SPL RKB FRS) for 2013-2026 Subaru BRZ/WRX, Toyota 86/GR86 & Scion FR-S

Fits 2013-2026 Scion FR-S, Subaru BRZ, WRX, STI, and Toyota 86/GR86.

SPL Parts Rear Knuckle Bushings (SPL RKB FRS) replace the compliant factory rubber bushings with low-friction, PTFE-lined spherical bearings. By eliminating OEM rubber deflection under heavy acceleration and braking loads, these bushings prevent unwanted geometry changes and stop suspension binding. This ensures the knuckle articulates smoothly through its travel, resulting in sharper throttle response, reduced wheel hop, and significantly improved driver feedback.

Engineered for maximum longevity and performance, these bushings utilize the largest possible FK bearings housed in 6061-T6 aluminum shells. Each housing is precision-cut to a +/- .001" tolerance to ensure a perfect press-fit and reliable operation in high-stress environments.

• Eliminates suspension deflection for consistent alignment geometry
• Precision-machined 6061-T6 aluminum bearing shells (+/- .001" tolerance)
• Maintenance-free, US-made, PTFE-lined FK spherical bearings
• Lightweight design: 0.674 lbs (306g) per set / 0.337 lbs (153g) per side
• Improves throttle and braking response while reducing wheel hop
• Proudly engineered, manufactured, and assembled in the USA
• Manufacturer Part Number: SPL RKB FRS