Description
AP Racing CP5317 2-Piston Rear Big Brake Kit
AP Racing Road Upgrade — Cast 2-piece
Upgrade your rear braking system with the AP Racing CP5317. This 2-piston cast 2-piece caliper delivers exceptional stopping power with even pad pressure distribution across all pistons, paired with SCHAFFEN rotors and Schaffen SN street compound for a complete bolt-on big brake kit solution.
Complete Kit Includes
| Calipers | AP Racing CP5317 — 2-Piston, Cast 2-piece (pair) |
| Brake Discs | SCHAFFEN 2-piece floating rotors (330x25mm) |
| Brake Pads | Schaffen SN street compound |
| Brake Lines | Goodridge stainless steel braided brake lines |
| Mounting Hardware | AME CNC-machined 7075-T6 aluminium bells & vehicle-specific brackets |
Caliper Specifications
| Caliper Model | AP Racing CP5317 |
| Position | Rear |
| Pistons | 2-Piston |
| Total Piston Area | 26.8 cm² |
| Weight (per caliper, no pads) | 1.5 kg |
| Construction | Cast 2-piece |
| Material | Aluminum |
| Finish | – |
| Mounting | Radial |
| Mounting Centers | 130mm |
| Compatible Disc Range | 300-332mm |
Engineering & Technology
The CP5317 is a lightweight 2-piston caliper with Ø41.3mm pistons at just 1.5 kg. With 130mm mounting centres and advanced matt or gloss paint finish, it’s the ideal entry-level rear brake upgrade for road and light track use.
Performance Upgrade
- Fixed Caliper Design: Eliminates flex and provides consistent pad-to-disc contact across all pistons, unlike factory sliding calipers
- Differential Bore Pistons: Progressively sized pistons distribute clamping force evenly, eliminating tapered pad wear
- Increased Disc Diameter: Larger swept area dramatically improves heat dissipation and braking torque
- Reduced Unsprung Weight: Lightweight aluminum construction improves suspension response and handling
Compatible Pad Compounds
| Use Case | Recommended Compounds |
|---|---|
| Daily Driving | Schaffen SN |
| Spirited Street + Track Days | Schaffen ST |
| Dedicated Track | Schaffen ZZ |
SCHAFFEN Disc & Pad Options
Brake Discs:
- SCHAFFEN GG — 2-piece floating rotor with CNC-machined 7075-T6 aluminium bell (standard)
- SCHAFFEN HC — High-carbon rotor for improved thermal stability and crack resistance (upgrade)
Brake Pads:
- Schaffen SN — Street/Daily compound
- Schaffen ST — Street/Track compound
- Schaffen ZZ — Track/Race compound
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. |
Related Products & Guides
- SCHAFFEN Brake Pads for AP Racing CP5317
- SCHAFFEN Brake Rotors
- All Brake Pads
- All Brake Rotors
- AP Racing Big Brake Kit Collection
Lead Time: Approximately 5–14 business days.
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