Suspension Secrets BMW F20/21 M135i/M140i Solid Front Control Arm Bushes
Improve the braking stability, turn-in responsiveness and front end grip of your BMW with our Suspension Secrets Solid Front Control Arm Bushes for the BMW F20 M135i/M140i.
The OEM front control arm bushes for the F20 M135i/M140i are made from soft rubber which is then filled with oil. This construction causes these bushes to flex excessively when driving fast which leads to vague, inaccurate steering and instability when braking hard.
Fitting solid bushes solves both of these issues, leaving you with a front-end that is responsive and confidence-inspiring even at the limit.
Our Suspension Secrets Solid Front Control Arm Bushes for the BMW F20 M135i/M140i feature machined billet aluminium casings fitted with a BMW OEM solid bush for maximum performance and reliability.
The key features of our Suspension Secrets Solid Front Control Arm Bushes for the BMW F20 M135i/M140i are:
- Improved braking stability including removing the nervous side-to-side wobble that can occur
- More accurate steering even during high speed cornering
- Reduced understeer due to reduced front toe-angle change/deflection
- Improved dynamics on road and track
- No increase in NVH
PLEASE NOTE: These bushes are designed to fit the F20/21 OEM control arms only
SUSPENSION EXPERTS
A wealth of experience derived from years working within race environments.
AIRCRAFT-GRADE MATERIALS
Lightweight and strong, the cornerstone for all materials used in our performance parts.
TRACK READY SETUPS
Everything you need to dominate on-track. From suspension and geometry to braking solutions.
// DESIGNED & MANUFACTUERED IN THE UK
It's time to give your suspension some attention. We are delighted to be working alongside supercar alignment specialists Suspension Secrets to enhance the performance of all vehicles using the standard adjustment provided with the car. We tweak the settings to reduce understeer and “switch on” the handling capabilities of the car.
Also specialising in Porsche, Mclaren and BMW suspension systems, working extensively to develop all our setups that we apply to cars with many road and track miles testing the setups that we design.



