SPL Parts FKS Series Non-Adjustable Front Caster Rod Bushings for BMW F2X and F3X are the ultimate front tension strut bushing upgrade for drivers who want sharper turn-in, improved braking stability and precise steering feel. These front caster bushings replace the soft OEM rubber with low-friction, articulating FK Racing 1 inch spherical bearings that eliminate bushing deflection and maintain optimum suspension geometry under load. Expect crisper response, more confidence on the brakes and consistent handling on fast road and track.
Engineered for performance, the SPL caster rod bushings feature 6061-T6 aluminium bearing housings with outer knurl and self-lubricating Teflon-lined spherical bearings for maximum durability and ultra-smooth articulation. The non-adjustable design keeps OEM geometry while removing compliance and friction where it matters most.
- Replaces OEM rubber with FK 1 inch Teflon-lined spherical bearings to eliminate deflection
- Sharper steering, better front-end bite and more stable braking
- Maintains correct suspension geometry under load for consistent grip and feedback
- Robust 6061-T6 aluminium housings with knurled outer surface
- Built for performance driving and track days
- Sold as a pair
- Made in the USA
Compatibility
- BMW F2X 2 Series models (2010+) including F22 and F23
- BMW F3X 3 Series and 4 Series models (2011+) including F30, F31, F32, F33 and F36
Important: Not compatible with xDrive or AWD vehicles.
Part Number: SPL CRBN F3X
Why choose these SPL caster rod bushings?
- Massive motorsport-grade FK bearings for strength and longevity
- Reduced brake shimmy and improved straight-line stability
- Smoother articulation than polyurethane for predictable handling
- Direct-fit, non-adjustable solution focused purely on performance
Our take
We run these SPL caster bushings on customer cars and the feedback is consistently positive: noticeably improved steering precision, more confidence under hard braking and a front end that feels planted. If you are upgrading front lower control arm or thrust arm bushes on a BMW F30 or F32 platform car, this is the go-to spherical bushing upgrade.
Installation and alignment
Professional installation recommended. Pressing tools are required to remove the factory bushings and install the SPL housings. A four-wheel alignment is strongly advised after fitting to maximise tyre contact and performance. For fitting, Nforcd can take care of everything at our Warwickshire location. Request a quote: Sales@nforcd.com.
What is included
- 1 x pair of SPL FKS Series non-adjustable front caster rod bushings
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