SPL Adjustable Front Caster Rod Monoball Bushings for Toyota GR Supra A90 and BMW Z4 G29
Unlock sharper steering, more stable braking and laser-precise front end feel with the SPL Parts FKS Series Adjustable Front Caster Rod Bushings. Designed for the Toyota GR Supra A90 and BMW Z4 G29, these performance suspension bushings replace the stock rubber with low-friction spherical bearings to eliminate deflection, reduce binding and maintain optimum suspension geometry under load.
Featuring massive 1 inch FK Racing spherical bearings with self lubricating Teflon liners and CNC machined offset bearing spacers, this proven motorsport solution delivers approximately +/- 4 degrees of caster adjustment so you can fine tune turn in, straight-line stability and tyre contact patch. If you want the crisp steering response and repeatable alignment control serious drivers demand, this is the upgrade.
Why choose these SPL caster rod monoball bushings
- Replace soft OEM rubber bushings with articulating spherical bearings for zero squirm and zero slop
- Massive 1 inch FK Teflon lined bearings reduce friction and increase durability
- Adjustable caster via CNC machined offset spacers for dialled-in handling on road and track
- Maintains true alignment under heavy braking, cornering and kerb strikes
- Sharper turn in, improved feedback and confidence at high speed
- Ideal for fast road, track day and motorsport builds
Key features
- 6061-T6 aluminium bearing housings with outer knurl
- FK 1 inch Teflon lined spherical bearings
- Innovative offset bearing spacers for approximately +/- 4 degrees caster adjustment
- Sold as a pair
- OEM arms not included
- Made in the USA
Compatibility
- Toyota GR Supra A90 2020+
- BMW Z4 G29 2019+
Part number
SPL CRB G29
Fitting and setup
Professional installation is recommended and a full four-wheel alignment should be carried out after adjusting caster.
Want it fitted by experts We can install and set up your alignment at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
What our customers say
We have fitted these SPL front caster monoball bushings on multiple Supra A90 and Z4 G29 builds. Customers consistently report noticeably crisper steering response, better braking stability and more consistent tyre wear after alignment.
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