SPL Parts FKS Series Rear Knuckle Bushings for 1992-2006 BMW 3 Series & Z3 (SPL RKB E36)

Fits select 1992-2006 BMW 318i/is/ti, 323i/Ci, 325i/Ci/xi, 328i/Ci, 330i/Ci/xi, M3, and Z3 models.

SPL Parts FKS Series Rear Knuckle Bushings (RKB) replace compliant factory rubber bushings with low-friction, articulating spherical bearings to eliminate bushing flex and reduce suspension bind. These monoball upgrades maintain optimum suspension geometry under heavy loads, removing the unwanted camber and toe changes that occur with OE rubber components during aggressive driving or track use.

Built for durability and precision, these bushings feature FK Racing Bearings with self-lubricating Teflon liners for maintenance-free performance and long service life. The bearing shells are CNC machined from T6061 aluminum to a tolerance of 1/1000th of an inch, ensuring an accurate press-fit and maximum chassis feedback. This kit provides a significant improvement in handling and predictability by providing a solid link between the suspension and the knuckle.

• Replaces soft factory rubber with high-load spherical bearings
• Maintains precise alignment and geometry under cornering loads
• CNC machined T6061 Aluminum shells with 1/1000-inch precision
• FK Racing Bearings with self-lubricating Teflon liners for reduced friction
• Sold as a complete kit for one vehicle
• Engineered and manufactured in the USA
• Manufacturer Part Number: SPL RKB E36