SPL Parts Adjustable Caster Rod Bushings - BMW M3 M4 G8X

SPL Parts adjustable front caster rod bushings for the 2021+ BMW M3 and M4 (G8X). Replaces the soft factory rubber bushing with a 1in PTFE-lined FK spherical bearing in a CNC-machined 6061-T6 aluminum housing, eliminating deflection and bind to hold geometry and sharpen response. Offset spacers provide +/-2 degrees of caster adjustment. Sold as a pair, made in the USA; OEM arms not included.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy