Genuine AP RACING 

AP Racing caliper    - UK made calipers  

2 X  AP Racing PERFORMANCE 4 Piston Brake Caliper 
CP9540 Radi-CAL 2.   -BLACK 

CP9540 family - 49.56cm² Piston Area
Applications:
- Performance Road Front or Rear.

The AP Racing CP9540 caliper is designed for high-performance road use and occasional track days, and it can be installed on both the front or rear axles of applicable vehicles. It is a popular component in aftermarket big brake kits for upgrading the braking performance of various performance cars and SUVs. 
Intended Applications
Performance Road Upgrades: The primary application for the CP9540 is as an upgrade for performance street cars, offering enhanced braking precision and durability over stock systems.
Track Day Use: While designed for the road, it incorporates motorsport-derived technology and is engineered to deliver reliable performance during demanding track sessions, providing stronger bite and better heat control.
Various Vehicles: As a universal performance part, the CP9540 is integrated into vehicle-specific big brake kits for a wide range of models, including the Mercedes-Benz A200, Honda Civic, Skoda Octavia vRS, and others.
Front or Rear Fitment: The caliper family is versatile and can be configured for front or rear axle applications depending on the specific vehicle's requirements and the overall braking system balance. 
Key Features for Use
Forged Two-Piece Body: The use of a forged aluminum alloy body provides high rigidity and strength, essential for consistent performance under pressure.
Road-Friendly Design: Unlike pure race calipers, it includes boot-type dirt seals to protect the pistons from contamination and anti-rattle clips to reduce noise, making it practical for daily driving.
Radi-CAL™ Technology: It benefits from AP Racing's patented asymmetric design concept, which optimizes stiffness and cooling efficiency.
Disc Compatibility: It is designed to work with ventilated discs ranging from 356mm to 380mm in diameter and 28mm to 32mm in thickness, which are common sizes for high-performance upgrades

Working Pressures: For full technical data sheet content view P14.353.pdf in download tab.

- Front Axle application - Gross Vehicle Front Engine = 2210Kg / Rear Engine = 2580Kg

- Rear Axle application - Gross Vehicle Front Engine = 3870Kg / Rear Engine = 3090Kg

Features:
- Benefits from our latest radical asymmetric design concept.
- Radial Mount, 195mm centres.
- Suits Ø380mm Max or 356mm Min x 32mm max or 28mm Min thick discs.
- Forged two piece Aluminium alloy body.
- Aluminium alloy pistons.
- Boot type dirt seals fitted.
- Advanced Red, Black or Silver anti-corrosion paint finish.
- Pad anti-rattle clip fitted.

Black Caliper Part Numbers to suit discs Ø380 x 32mm thickness:
- RHT = CP9540-2S0BG / LHT = CP9540-3S0BG  - RHL = CP9540-4S0BG / LHL = CP9540-5S0BG  

Black Caliper Part Numbers to suit discs Ø380 x 28mm thickness:
- RHT = CP9540-6S0BG / LHT = CP9540-7S0BG - RHL = CP9540-8S0BG / LHL = CP9540-9S0BG

Red Caliper Part Numbers:
For Red calipers add 'R28' to end of Part Number e.g.
CP9540-2S0R28  

Silver Caliper Part Numbers:
For Silver calipers add 'S10' to end of Part Number e.g.
CP9540-2S010

Typical Brake Discs to Suit:

- Ø356x28mm - CP6565-182CG12 / -183CG12

- Ø356x32mm - CP7177-110G8 / -111G8

- Ø360x28mm - CP6565-198GA / -199GA

- Ø362x32mm - CP4542-112CG12 / -113CG12

- Ø380x28mm - CP5914-484CG12 / -495CG12

- Ø380x32mm - CP5914-188GA / -189GA

- Ø390x32mm - CP7177-130CG12 / -131CG12

Brake Pad Information
(To view an image of the pad
click on Pad Part No)    
      CP6600D55

- Pad Area = 64.6cm²
- Pad Depth = 55.0mm
- Thickness = 16.75mm

CALIPER TECHNICAL SPECIFICATIONS    
Piston Sizes - mm    - Ø38.1 x 2
- Ø41.3 x 2
Piston Area - cm²    49.56
Disc Diameter - mm    Ø380.0
Disc Thicknesses - mm    - CP9540-2/3/4/5 = 32.0
- CP9540-6/7/8/9 = 28.0
Weight (No Pads) - Kg    3.25
Hydraulic Threads    M10x1.0
Mounting Type    Radial
Mounting Centres - mm    195.0
Mounting Offset - mm    - CP9540-2/3/4/5 = 36.0
- CP9540-6/7/8/9 = 34.0
Mounting Hole Ø - mm    12.1
PL Dimension - mm    55.0
Bleed Screw Tightening Torque - Nm    17
CALIPER SPARES    
Pistons    Ø38.1mm = CP8335-110 x 2
Ø41.3mm = CP8335-111
Seal Repair Kit    CP4527-JK
Tube Pad Retainer and Bolt    
CP9540-2/3/4/5 Caliper - CP9560-106 x 4 & CP3596-112ST x 2
CP9540-6/7/8/9 Caliper - CP9560-106 x 4 & CP3796-121ST

Pad Retaining Pins    CP9540-6/7/8/9 = CP8335-116 x 2
CP9540-2/3/4/5 = CP7555-182
Bleed Screw Kit    CP3880-1
Pad Anti-Rattle clip    CP9540-2/3/4/5 Caliper - CP9540-107
CP9540-6/7/8/9 Caliper - CP9540-108

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