Suspension and Components› Shocks, Struts, Coil-Overs and Components
SPL PARTS INC.
SPL Parts Subaru BRZ / 15+ WRX / Toyota 86/GR86 Rear Spherical Knuckle Bushing
SKU: S015 SPL RKB FRS
Moderate — 2–4 hours
Description
Part #: SPL RKB FRS
The SPL rear knuckle bushings replace the rubber factory knuckle bushing with a low friction PTFE-lined spherical bearing. Replacing the OEM rubber bushing eliminates deflection under heavy acceleration and braking loads that leads to unwanted geometry changes, and prevents binding by allowing the knuckle to smoothly articulate. The reduced deflection also translates to improved driver feedback from the tire and better overall response. We use the largest possible FK bearing, to increase longevity and reduce NVH, mounted in a 6061-T6 aluminum housing precision cut with +/- .001" tolerance to insure proper fitment.BenefitsLightweight: 0.674 lbs (306g) / 0.337 lbs (153g) per SideImproves Throttle and Braking ResponseReduced Wheel HopMaintenance-Free, US Made, PTFE-Lined FK BearingsMaterials6061-T6 Aluminum Bearing ShellsSteel PTFE-lined FK Spherical Bearings
Features:
- Proudly made, engineered, and assembled in the USA.
SPL FR-S / BRZ / GT86 / GR86 / VA WRX/STI Rear Knuckle Spherical Bushing
Fitment
Fitment Guaranteed
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Available on iOS & Android
Specifications
| Brand | SPL PARTS INC. |
| Part Number | S015 SPL RKB FRS |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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