Suspension Secrets

Suspension Secrets Full Kinematics Kit - BMW F20 M135i/M140i

£2,949.00

Including Taxes

In Stock

Lifetime Warranty Included

Lifetime Warranty Included

Free Worldwide Shipping

Free Worldwide Shipping

Technical Support Available

Technical Support Available

Unlock maximum grip out on track for your BMW with the Suspension Secrets Full Kinematics Kit for the BMW F20 M135i / M140i.

This kit includes all the necessary chassis upgrades to transform your M135i / M140i into a full track car with fully-adjustable suspension arms and bushes designed to give you the ultimate on-track performance.

We have developed this kit extensively out on track to provide the optimum adjustment range in your suspension system and remove some key rubber suspension bushes from the system to generate much more grip ion the corners and massively improve stability under heavy braking and turn in. The kinematics kit is designed to be installed alongside a set of coilovers to complete the components required to turn your F20 into a full track car. This kit contains:

  • Suspension Secrets Adjustable Rear Toe Arms (including rear toe lockout kit) (1 Pair)
  • Suspension Secrets Adjustable Rear Camber Arms (1 Pair)
  • Suspension Secrets Adjustable Rear Traction Arms (Trailing Arm) (1 Pair)
  • Suspension Secrets Solid Rear Control Arm Bushes (1 Pair)
  • Suspension Secrets Solid Front Offset Caster Bushes (1 Pair)

  • Suspension Secrets Adjustable Rear Upper Third Links (1 Pair)

Suspension Secrets Parts are made exclusively from 6082 T6 aluminium, 303 stainless steel and EN19T Steel for improved performance and reliability. All Suspension Secrets Products are designed, developed and manufactured fully in-house by our team of engineers. 

All Suspension Secrets products have a lifetime warranty including the bearings. 

Geometry Explained

Geometry
Suspension geometry is the positioning and angular movement of the suspension arms and the effect that they have upon the movement of the wheel and tyre. It is caused by the different components of the suspension system all moving in their designed paths, which together generate changes in direction and multiple forces on the wheel and tyre, making the steering and suspension operate in particular ways.

Product Development

All Suspension Secrets upgrades are designed, developed and manufactured in-house. This process includes prototyping new products using CAD and 3D printing technology, and extensive rear-world testing with professional racing drivers. Sophisticated motorsport data capturing equipment allows us to measure the handling performance gains achieved by our parts.

Delivery and returns

All parts purchased on our website are shipped internationally free of charge. We accept return requests made within 14 days of receipt of the item.

Need help with something?
Email: sales@suspensionsecrets.co.uk

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What our customers say.

Real feedback from customers who have transformed the handling of their cars with Suspension Secrets upgrades.

G87 M2 Handling transformation

Supplied and fitted by the team at Suspension Secrets along side their solid front control arm bushes and Eibach Pro springs. I cant recommend this enough, stability and grip are ...
Supplied and fitted by the team at Suspension Secrets along side their solid front control arm bushes and Eibach Pro springs. I cant recommend this enough, stability and grip are on another level. A* service provided by the team from start to finish. Highly recommended!

- A.J.S

Effortless & Accurate

The results have exceeded my expectations, I'm really pleased with the car. The ride is similar to stock but it's taken the jitteryness away over small ripples in the road. ...
The results have exceeded my expectations, I'm really pleased with the car. The ride is similar to stock but it's taken the jitteryness away over small ripples in the road. I was slightly apprehensive that the stock dampers might be exposed but I needn't have worried, the car rides exactly as I'd expect & want from a roadgoing M-car. The real revelation is the steering, I could feel the difference as soon as I turned out of your premises. Gone is the sluggish, heavy response - it's now quick, effortless & accurate, almost as if the power steering had been switched off beforehand. The car feels like it's 200kg lighter but at the same time, more solid & composed. For me, it's a perfectly-judged road setup - thanks again

- Glenn C.

Transformational

Recently bought a 2025 M3 LCI which seemed ok out of the box. In the wet there was quite bad understeer and slightly unpredictable transition into oversteer. The CS+ handling ...
Recently bought a 2025 M3 LCI which seemed ok out of the box. In the wet there was quite bad understeer and slightly unpredictable transition into oversteer. The CS+ handling package transformed the car. The grip is ridiculous, feel is improved, can really lean on the car. Driving in the wet traction is like it’s dry, extremely stable. Car is predictable, any transition to understeer or oversteer is communicated and feels like slow motion with plenty of time to correct. Feel like all the handling of a CS car with all the comfort or a regular M car. Absolutely love the car now.

- Yaqub A.