Brembo XB3.L5 / XB3.B5 series 4-Piston Front Big Brake Kit
Brembo Racing Division — Motorsport Grade
Upgrade your front braking system with the Brembo XB3.L5 / XB3.B5 series. This 4-piston billet monobloc caliper delivers exceptional stopping power with even pad pressure distribution across all pistons, paired with RH rotors and Endless MX72 / Winmax W615 for a complete bolt-on big brake kit solution.
Complete Kit Includes
| Calipers | Brembo XB3.L5 / XB3.B5 series — 4-Piston, Billet monobloc (pair) |
| Brake Discs | RH 2-piece floating rotors (278x18mm / 300x20mm) |
| Brake Pads | Endless MX72 / Winmax W615 |
| Brake Lines | Goodridge stainless steel braided brake lines |
| Mounting Hardware | AME CNC-machined 7075-T6 aluminium bells & vehicle-specific brackets |
Caliper Specifications
| Caliper Model | Brembo XB3.L5 / XB3.B5 series |
| Position | Front |
| Pistons | 4-Piston (Differential bore: 36/42mm (est.)) |
| Total Piston Area | ~48.1 cm² |
| Weight (per caliper, no pads) | ~2.0 kg |
| Construction | Billet monobloc |
| Material | Aluminum |
| Finish | Hard Anodized/Nickel |
| Mounting | Radial |
| Compatible Disc Range | 300mm-330mm |
| Pad Shape Code | B18-B26 |
Engineering & Technology
The XB3.L5 is a compact high-performance 4-piston caliper from Brembo's racing range, offering approximately 48 cm² piston area in an ultra-lightweight ~2.0 kg package.
Compatible Pad Compounds
Available pad options:
Brembo pad shape code: B18-B26 — use this code when ordering replacement pads.
RH Disc & Pad Options
Brake Discs:
- RH — 2-piece floating rotor with CNC-machined 7075-T6 aluminium bell
Brake Pads:
Custom Brake Solutions
At AME MOTORSPORT, we design and manufacture adapters for virtually every vehicle make and model. All our brake kits are engineered for direct bolt-on fitment across a wide range of vehicles.
- AME CNC-machined 7075-T6 aluminium disc bells & vehicle-specific mounting brackets
- Steel brackets available on request for heavy-duty applications
- Goodridge stainless steel braided brake lines
- All necessary mounting hardware included
Brake discs can be customised with square-slot pattern and full-floating conversion. Please contact us for consultation.
Need a different disc size, pad compound, or custom bracket solution? Contact us to discuss your specific requirements.
Warranty
| Brake Calipers | 1-year warranty against manufacturing defects |
| Brake Discs & Pads | Wear components — not covered under warranty |
| Defect Coverage | Includes cracking, material separation, or other failures without external force. Normal wear and damage from misuse are excluded. |
Lead Time: Approximately 5–14 business days.
