Zimmermann 34-21-6-882-245 Formula F Rear Brake Disc 330x20mm

The Zimmermann 34-21-6-882-245 is a Formula F two-piece compound brake disc designed as a direct replacement for BMW OEM brake rotors. This rear brake disc measures 330mm in diameter by 20mm in thickness and features Zimmermann's advanced lightweight design with enhanced thermal performance.

Advanced Two-Piece Construction:

• Aluminum hub friction-lock riveted to a cast iron friction ring
• Weight reduction of up to 15 percent compared to conventional one-piece rotors
• Enhanced thermal conductivity from high-carbon casting quality
• Improved braking performance through reduced unsprung mass
• Better acceleration and handling characteristics

Premium Features:

• Internally vented design for superior heat dissipation
• Coat Z anti-corrosion coating with heat-resistant aluminum lacquer
• ECE R 90 approved for quality assurance
• Engineered and manufactured in Germany to DIN EN ISO 9001:2008 standards
• Direct 1:1 replacement for OEM specifications
• Minimum thickness: 18.4mm

The Formula F line represents Zimmermann's answer to BMW's requirement for riveted compound brake discs, combining lightweight aluminum hub construction with a high-performance cast iron friction ring. The result is enhanced thermal conductivity, reduced brake fade, and improved overall braking performance while maintaining OEM fitment and quality standards.