Suspension Secrets Solid Front Control Arm Bushes - BMW F20 M135i/M140i

Transform the way your BMW F20 M135i or M140i feels on the road and track. The Suspension Secrets Solid Front Control Arm Bushes replace the weak factory rubber with a precision-engineered solution that delivers sharper steering, stronger braking stability, and more grip when it matters most.

Key Features & Benefits

• Material: CNC machined billet aluminium casing with BMW OEM solid bush
  
  

• Improved braking stability: Eliminates the side-to-side wobble under heavy braking
  
  

• Sharper steering: Direct and accurate response, even in high-speed cornering
  
  

• Better grip: Reduces understeer by limiting unwanted suspension deflection
  
  

• Durable design: Resistant to wear, flex, and harsh driving conditions
  
  

• Track-ready: Perfect upgrade for both spirited road driving and motorsport use
  
  

• No extra NVH: Maintains comfort while improving dynamics
  
  

Vehicle Compatibility / Fitment

• BMW F20 M135i (2012–2016)
  
  

• BMW F20 M140i (2016–2019)
  Note: Fits OEM F20 control arms. Does not fit M4 LCAs.
  
  

Technical Specifications

• Material: Billet aluminium outer casing with solid BMW OEM bush
  
  

• Finish: Hard anodised aluminium for corrosion resistance
  
  

• Construction: Oil-free solid bush design for rigidity
  
  

• Weight: Lightweight but extremely strong
  
  

• Design focus: Stability, grip, and steering precision
  
  

Installation Information

• Tools required: Standard automotive tools and press (recommended)
  
  

• Install time: Approximately 2–3 hours
  
  

• Professional installation strongly recommended for best results
  
  

• Alignment check required after fitting
  
  

Performance Gains / Why It’s Needed

The factory BMW bushes are oil-filled rubber, designed for comfort but prone to excessive flex. This causes vague steering and instability under braking. Suspension Secrets Solid Front Control Arm Bushes solve these issues by removing unwanted movement, resulting in a more connected feel, reduced understeer, and precise control at the limit. Whether you’re driving on the road or pushing on track, the difference in confidence is clear.

What’s Included in the Kit

• 2x Solid front control arm bushes (pre-installed in billet aluminium housings)
  
  

• Ready-to-fit design for OEM BMW F20 arms
  
  

Warranty & Guarantee

• Covered by Suspension Secrets manufacturer warranty
  
  

• Returns accepted on unused parts in original packaging
  

Ideal BMW F20 suspension upgrade for enthusiasts seeking tighter handling and greater performance. These solid suspension bushes complement other upgrades such as camber shims and wheel spacers. Check our Suspension Secrets collection for more BMW handling improvements.

FAQs

Q1: Do these bushes increase noise or vibration?
No. They are designed to improve stability without adding noticeable NVH.

Q2: Do they fit M4 lower control arms?
No. These bushes fit only OEM F20 arms. For M4 LCAs, see our dedicated kit.

Q3: Do I need professional installation?
Yes. Press tools and alignment are required, so we recommend professional fitting.

Q4: What’s the biggest benefit?
Sharper steering, stronger braking stability, and reduced understeer.

Q5: Are they suitable for track use?
Yes. They are engineered for both road and motorsport performance.