SPL Parts Adjustable Front Caster Rod Monoball Bushings - BMW M3/M4 (G80/G82/G83)

OVERVIEW

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 ensure maximum performance and durability.

Innovative CNC-machined offset bearing spacers provide ±2 degrees of caster adjustment, letting you fine-tune turn-in response without replacing the factory arms.

SPECS

• 6061-T6 aluminum bearing housing with outer knurl
• 6061-T6 aluminum offset spacers provide ±2 degrees of caster adjustment
• FK 1" spherical bearings with self-lubricating Teflon liners
• Eliminates bushing deflection and reduces friction under load
• Retains the factory caster rods — OEM arms not included
• Fits M3 and M4 only — does not fit the M2 (G87)
• Sold as a pair; made in the USA

PARTS INCLUDED

• 2x SPL front caster rod monoball bushings with FK 1" spherical bearings
• Offset bearing spacers for caster adjustment
• Mounting hardware (OEM arms not included)

TECH RESOURCES

• Fitment: G80 M3 and G82/G83 M4 only. These do not fit the G87 M2 — verify your chassis before ordering
• A professional wheel alignment is required after installation
• Prefer full replacement arms with a wider adjustment range? See our SPL Front Tension Rods (RWD only)
• Pairs with our Front Lower Control Arms and Bumpsteer Adjustable Tie Rod Ends
• Spherical bearings transmit more noise and vibration than rubber bushings — expected on a performance component
• Professional installation recommended — bushing replacement requires a press
• Installation instructions (PDF): SPL CRB G8X Install Guide

PART NUMBER

• SPL CRB G8X

VEHICLE APPLICATIONS