Zimmermann 100.3370.70 Formula Z Perforated Floating Brake Disc

The Zimmermann 100.3370.70 Formula Z brake disc is a high-performance, two-piece floating brake rotor engineered for drivers who demand superior stopping power under extreme conditions. Part of Zimmermann's renowned Formula Z lineup, this disc is purpose-built for performance driving and track applications where standard rotors fall short.

Featuring a floating disc design, the rotor allows radial expansion under heavy thermal and mechanical loads, preventing deformation and significantly increasing resistance to heat cracks and brake fade. The two-piece construction pairs a lightweight aluminum hub with a high-carbon alloy iron friction ring, reducing unsprung weight by approximately 15% compared to solid cast alternatives — translating to improved ride quality and sharper brake response.

The braking surface is fully perforated for efficient gas evacuation and improved heat dissipation, while the entire assembly is finished with Zimmermann's proprietary Coat Z anti-corrosion coating, providing both rust protection and a premium appearance straight out of the box.

Key Features:

• Formula Z two-piece floating brake disc design
• Perforated rotor face for optimal gas drainage and reduced brake fade
• Lightweight aluminum hub reduces unsprung weight by ~15%
• High-carbon alloy iron construction for enhanced thermal stability
• Coat Z anti-corrosion protective coating
• Internally vented for maximum heat dissipation
• ECE R90 certified — meets European safety and performance standards
• Sold individually — note that left and right sides may differ in design

Zimmermann has been manufacturing premium brake components for the automotive industry for over 50 years, combining high-quality materials with precision, high-tech manufacturing processes. The Formula Z line is designed to meet the elevated demands of tuned engines and performance chassis setups, making it an ideal upgrade over OE rotors for enthusiasts and track drivers alike.