Adjustable Camber/Caster Spherical Top Mounts Suspension Secrets – BMW M3 F80 / M4 F82

At Optimiz Access, official Suspension Secrets distributor, we understand that the BMW M3 F80 and M4 F82 are precision machines. However, the stock suspension does not allow for sufficient camber adjustment for intense track use. These spherical top mounts are the technical solution to remove this factory handicap.

Manufactured with British excellence, these top mounts are machined from 6082 T6 Aerospace Grade Aluminium and feature motorsport-specification Fluro/RODOBAL spherical bearings. They guarantee a play-free connection and zero deflection between the chassis and the damper, which is crucial for performance and reliability.

The Drawbacks of Fixed Geometry: What Your M3/M4 Loses

Keeping the OEM strut mounts on your BMW F80 M3 / F82 M4 exposes you to clear limitations in terms of dynamics and maintenance costs:

• Troublesome Understeer: In fast corners, the lack of negative camber severely limits front axle grip under load, causing frustrating understeer and restricting cornering speed.
• Accelerated Tyre Wear: The excessive load on the outer edge of the front tyres during cornering (road or track) leads to premature and very costly tyre wear.
• Loss of Steering Feel: The original rubber bushings absorb feedback, reducing steering precision and the essential road feedback required for performance driving.
• High-Speed Instability: A non-optimal Caster setting can negatively affect directional stability at high speeds, even on the highway.

Suspension Secrets Technical Advantage: Camber and Caster Precision

These top mounts give you total control over the Camber and Caster angles of your M3/M4. They allow for increased negative Camber adjustment to optimize cornering grip. The Caster adjustment allows you to fine-tune steering feel, improve stability, and achieve better self-aligning torque.

ATTENTION: For damper fastening, we must supply the specific nuts. It is essential that you specify your type of suspension (OEM, M Performance, or type of coilover kit) when ordering to guarantee a perfect fitment.

Maintenance and Expert Installation: Your Questions

Are they compatible with my KW V3 coilovers?

Yes. These top mounts replace the OEM upper supports and are compatible with OEM dampers as well as the vast majority of coilover kits on the market (KW, Bilstein, Öhlins, etc.) as long as the damper shaft is compatible with the OEM housing. Please specify the exact model for the nuts.

Can I install these spherical top mounts myself?

Replacement is technical. Furthermore, the installation of these top mounts drastically changes the geometry angles. A complete custom alignment is mandatory after fitting. Our workshops in the Hauts-de-France region (near Lille, Cambrai, Valenciennes, Arras) are equipped to perform precise installation and geometry adjustment.

Why are these parts better than eccentric bushings alone?

These top mounts offer a much greater adjustment range than simple OEM eccentric bushings and eliminate rubber deflection, providing unparalleled steering feel and driving precision for your M3 F80/M4 F82.

To get the most out of your new front axle, discover our complementary products for the chassis and rear axle of your BMW M3/M4 at the bottom of this product page.