Suspension Secrets Front Offset Caster Bushes - BMW F20 M135i/M140i

Replace soft, flexing OEM bushes with solid offset caster bushes to sharpen steering feel and reduce understeer. Designed specifically for the BMW F20 M135i and M140i, these bushes improve braking stability and allow precise caster control.

Key features & benefits

• Material: high-durometer polyurethane with steel reinforced inner sleeve for strength and longevity
  
  

• Offset rose joint: adds positive caster and dynamic camber gain for increased cornering grip
  
  

• Solid design: eliminates rubber flex for sharper steering feedback and improved braking stability
  
  

• Fitment: direct replacement for BMW F20 M135i and M140i lower control arm bushes
  
  

• Practical: lets you run maximum top mount caster without inner arch rub when used to recenter the wheel
  
  

Vehicle compatibility / Fitment

Fits BMW F20 platform M135i and M140i models. Confirm fitment if you have non-standard control arms or heavily modified suspension.

Technical specifications

Material: reinforced polyurethane and steel sleeve. Finish: corrosion-resistant coating. Joint type: offset rose joint for caster change. Designed for road and track use.

Installation information

Tools: basic workshop tools and torque wrench. Estimated install time: 1.5 to 3 hours per side depending on tools. Professional installation and full alignment recommended after fitment. See store for installation PDF or video if available.

Performance gains / Why it is needed

OEM rubber bushes allow deflection that dulls steering and creates understeer and instability under braking. These offset caster bushes lock the geometry, increase positive caster, and generate beneficial camber gain during turn-in, improving turn-in, midcorner grip, and brake feel.

What is included in the kit

Pair of front offset caster bushes with hardware where applicable. Installation instructions included.

Warranty & guarantee

Backed by Suspension Secrets warranty against manufacturing defects. Returns accepted for unused items in original packaging per shop policy.

Related: caster bushings, suspension upgrade BMW F20, camber gain parts, steering feel upgrade. Pair with camber shims and wheel spacers for full suspension tuning.

FAQs

Q: Will these increase steering effort?
A: Slightly at low speed due to firmer bush material, but feedback and precision improve.
Q: Do I need an alignment?
A: Yes. A full alignment is required after installation.
Q: Can I use these with aftermarket arms?
A: Check dimensions with your supplier; they are designed for OEM control arms.
Q: Are they road legal?
A: They are a suspension upgrade part intended for road and track use. Confirm local regulations if needed.