SPL Parts FKS Series Non-Adjustable Front Caster Rod Bushings (CRBN) replace the stock flexible rubber bushings with low friction, articulating Spherical Bearings eliminating bushing deflection and reducing friction. This maintains optimum suspension geometry under load to improve braking and handling feedback. Massive 1" sized FK Racing Bearings with self lubricating Teflon liners are used to ensure maximum performance and durability. Sold as a pair. Made in the USA. SPL Parts Caster Rod Bushings Features: 6061-T6 Aluminum bearing housing with outer knurl FK Teflon lined 1" spherical bearings Applications: 2020+ Toyota Supra A90 GR 2019+ BMW Z4 G29 Installation Instructions: SPL CRBN G29