SPL Parts FKS Series Adjustable Front Caster Rod Monoball Bushings for 2019-2026 BMW Z4 & Toyota GR Supra (+/- 4° Caster Adjustment)

Fits 2019-2026 BMW Z4 (G29) and 2020-2026 Toyota GR Supra (A90/A91).

SPL Parts FKS Series Adjustable Front Caster Rod Bushings (CRB) replace soft, flexible factory rubber bushings with high-precision, low-friction articulating spherical bearings. By eliminating bushing deflection, these components maintain optimum suspension geometry under heavy braking and cornering loads, significantly sharpening steering response and providing more consistent handling feedback.

Each assembly utilizes massive 1-inch FK Racing Bearings with self-lubricating Teflon liners to ensure maximum durability and smooth articulation in demanding environments. The innovative CNC-machined offset bearing spacers allow for +/- 4 degrees of caster adjustment, enabling aggressive alignment settings for track or street performance. These bushings are designed to be pressed into your factory arms for a professional-grade monoball conversion.

• 6061-T6 aluminum bearing housings with outer knurling for a secure press-fit
• Heavy-duty 1" FK Teflon-lined spherical bearings for high load capacity
• Innovative offset spacers provide +/- 4 degrees of caster adjustment
• Eliminates compliance to maintain precise suspension geometry
• Sold as a pair (OEM arms not included)
• Manufacturer Part Number: SPL CRB G29
• Proudly engineered, manufactured, and assembled in the USA