Zimmermann Formula Z Brake Disc

The Zimmermann Formula Z brake disc (also called a compound, two-piece or floating brake rotor) is a performance disc rotor built for spirited driving and heavy vehicles. It is made for drivers who need strong, consistent braking under high mechanical and thermal load.

Key Features:

• Multi-piece construction: A specially alloyed gray cast iron friction ring is paired with a weight-reducing aluminum hub (pot).
• Floating connection: Floating pins join the friction ring to the hub. The ring can expand independently of the hub as it heats up, which helps limit cracking and warping.
• Reduced unsprung weight: The aluminum pot lowers unsprung mass compared with conventional one-piece cast discs.
• Thermal stability: The disc keeps its shape under severe stress, which supports braking performance and long service life.
• Coat-Z protection: Many Zimmermann discs carry a protective coating that resists rust and corrosion in storage and in use. It also keeps the disc looking good.
• Simple installation: Designed to bolt in without conversion work for brake tuning.

Zimmermann brake discs are made from quality cast iron with flake graphite, comparable to the material used in original-equipment parts. Otto Zimmermann is an established German brake specialist. The Formula Z line gives high-performance and sport applications a lighter, more heat-resistant alternative to standard discs.

Replace brake discs in axle pairs. Avoid hard or shock braking during the break-in period after installation so the disc warms up gradually.