Suspension Secrets Front Offset Caster Bushes - BMW F80 M3/ F82 M4

Fine tune the front end of your F80 M3 or F82 M4 with Suspension Secrets Front Offset Caster Bushes. These solid bushes replace soft factory rubber, remove unwanted flex, and add adjustable positive caster to sharpen steering, reduce understeer, and improve braking stability for road or track.

Key features and benefits

• Material: high durometer polyurethane with pressed steel sleeve for strength and durability
  
  

• Design: solid offset caster geometry for added positive caster and controlled camber gain
  
  

• Fit: direct fit for BMW F80 M3 and F82 M4, works with stock lower control arms and many adjustable top mounts
  
  

• Installation: bolt-on replacement, basic tools required, 1–2 hours per side, alignment recommended after fitment
  
  

• Durability: resistant to oil and road contaminants, long service life
  
  

Vehicle compatibility / fitment

• BMW F80 M3 (2014–2018)
  
  

• BMW F82 M4 Coupe (2014–2020)
  
  

Technical specifications

• Material: high durometer polyurethane and steel sleeves
  
  

• Offset options: standard and +X mm caster offset (select model)
  
  

• Finish: black polyurethane with zinc plated metal parts
  
  

• Weight: negligible change vs OEM
  
  

Installation information

• Tools required: socket set, torque wrench, press or bush removal tools recommended for clean install
  
  

• Estimated install time: 1–3 hours per side depending on tools
  
  

• Professional installation and wheel alignment recommended
  
  

Performance gains / why it is needed

Solid bushes stop front lower arm deflection under load, delivering crisper turn-in, increased dynamic camber gain from extra positive caster, better front-end bite and steadier braking.

What’s included

• 2 x front offset caster bushes (left and right)
  
  

• 2 x steel sleeves and nuts/bolts where applicable
  
  

• Fitting notes
  
  

Warranty & guarantee

• Manufacturer warranty against defects (terms apply)
  
  

• Returns accepted for unused items in original packaging per store policy
  

Related search terms: BMW caster bush upgrade, M3 M4 suspension bush, front offset bushes, steering feel upgrade, camber gain parts. See our Suspension collection for complementary products.

FAQs

Q: Do these require modified top mounts?
A: No, they work with stock and most adjustable top mounts.
Q: Will I need an alignment?
A: Yes, always perform a full alignment after installation.
Q: Are they track safe?
A: Yes. Solid construction is aimed at performance and track use.