Front Caster Rod Bushings (CRB) 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. Innovative CNC machined offset bearing spacers provide +/- 2 degrees of caster adjustment. OEM arms not included. Sold as a pair. Made in the USA. Caster Rod Bushings Features: 6061-T6 Aluminum bearing housing with outer knurl 6061-T6 Aluminum offset spacers provide +/-2 degrees of caster adjustment FK 1" spherical bearings Applications: 2022+ BMW G8X (M3 and M4) Installation Instructions: SPL Front Caster Rod Bushings