Upgrade the braking performance of your high-performance BMW with the Zimmermann Formula Z two-piece brake discs. Specially engineered for demanding street use and track days, these brake discs deliver maximum stopping power, exceptional fade resistance, and uncompromising quality.
The Formula Z lineup combines an aluminum hat (hub) with a high-carbon friction ring. This floating design minimizes thermal stress under extreme loads, effectively preventing disc warping. Thanks to the cross-drilled friction surface and optimized internal ventilation, heat is dissipated rapidly, resulting in a superior initial bite and consistent braking performance under harsh driving conditions.
Key Features and Benefits:
- Two-Piece Design (Aluminum Hub): Reduces unsprung weight and prevents thermal distortion.
- Cross-Drilled Surface: Ensures excellent water dispersion, maximum bite, and optimal cooling.
- Coat Z Corrosion Protection: Advanced coating prevents rust on non-friction areas, keeping the discs looking great behind open wheels.
- TÜV Approved (Eintragungsfrei): Comes with ABE certification, meaning no registration is required for street use in most of Europe.
- Complete Axle Set: Supplied as a pair for the front axle (left + right).
Technical Specifications:
| SKU / Part Number: | 150.3421.70 + 150.3422.70 |
| Fitting Position: | Front Axle (Left & Right) |
| Disc Type: | Vented / Drilled |
| Construction: | Two-piece (Aluminum hat, floating) |
| Outer Diameter: | 345 mm |
| Thickness / Min. Thickness: | 28 mm / 26.4 mm |
| Total Height: | 52.5 mm |
| Bolt Circle / Holes: | 120 mm / 10 holes (5 mounting holes) |
| Hub Bore Diameter: | 79 mm |
| Homologation: | Includes ABE (Street legal) |
Vehicle Compatibility:
- BMW 3 Coupe (E46) M3 (incl. CS and CSL) - 3.2L (265 kW / 360 hp) - Years: 06/1999 - 07/2006
- BMW Z4 M (Roadster & Coupe)
Note: Brake components are critical safety parts. We strongly recommend replacing brake discs in axle sets (both left and right simultaneously) along with fresh brake pads to ensure balanced braking performance.
