AP Racing 22.2 mm Master Cylinder CP4623-94NC - AP-CP4623-94NC - CP4623-94NC - 3661768078853

AP Racing Master Cylinder, Ø 22.2 mm, with non-retained piston rod

Reference: AP-CP4623-94NC

Supplier Ref.: CP4623-94NC

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Carbon footprint: 1.1 kg CO₂

The AP Racing master cylinder (Ø 22.2 mm) with a non-retained rod, part number CP4623-94NC, features a 60° out-of-round flange. This configuration facilitates access to the mounting hardware; the non-retained rod allows the master cylinder to be replaced without removing the pedal or linkage rod.

The compatible push rod must be ordered separately, with the thread and length appropriate for the mounting.

The forged aluminum body and the 60° out-of-round flange meet the demands of compact mountings. The range also includes versions with non-captive rods. Its RED clamp identifies the 22.2 mm diameter.

Technical Specifications

Brand: AP Racing.
Manufacturer Part Number: CP4623-94NC.
Range: CP4623.
Actuation: Push-type.
Mounting: 60° out-of-round flange.
Master cylinder diameter: 22.2 mm - 0.875 in - 7/8 in.
Identification clamp color: RED.
Total stroke: 25.4 mm.
Hydraulic inlet: M12 Ã— 1.0.
Hydraulic outlet: M10 Ã— 1.0.
Stroke before supply shutoff: 0.68 to 1.09 mm - short.
Center distance of mounting holes: 57.15 mm.
Mounting hole diameter: 8.69 to 8.81 mm.
Push rod: Non-captive, must be ordered separately.
Body material: Forged aluminum.

Color-Coded Diameter Identification

AP Racing master cylinders come with a small colored plastic clamp wrapped around the body to facilitate diameter identification. The part number and nominal diameter are also marked on the body.

The following table applies to push-type master cylinders. This part number has a RED clamp corresponding to 22.2 mm - 0.875 in - 7/8 in.

Color	Diameter in mm	Diameter in inches
BLACK / ORANGE	14 mm	0.551 in
BLACK / RED	15 mm	0.590 in
BLACK	15.9 mm	0.625 in - 5/8 in
BLACK / YELLOW	16.8 mm	0.661 in
BLUE	17.8 mm	0.70 in
GREEN	19.1 mm	0.75 in - 3/4 in
ORANGE	20.6 mm	0.812 in - 13/16 in
RED	22.2 mm	0.875 in - 7/8 in
WHITE	23.8 mm	0.937 in - 15/16 in
YELLOW	25.4 mm	1.00 in

Replacement Parts and Repair Kit

Repair kit part number: AP Racing CP2623-94RK, sold separately.

Mounting and Connections

Check the mounting, connections, and alignment of the control unit. The shaft thread is for the mechanical connection; it is separate from the hydraulic threads.

Master cylinders are individually adjusted during manufacturing: do not interchange rods, pistons, or internal components between different assemblies.

Photo and Master Cylinder Selection

The photo shows the AP Racing CP4623 range and is not binding with regard to the color of the identification clamp. To select the model suitable for your mounting, refer to the part number and technical specifications provided in this data sheet.

Before ordering, be sure to check the master cylinderâ€™s diameter, threads, and fastening type. If in doubt, our technicians can help you select the correct part number for your system. Feel free to contact them.

Key Features

Forged aluminum body.
60° out-of-round flange: facilitates access to the mountings.
Compact design.
Short stroke before the fluid supply shuts off.
Metric hydraulic inlet and outlet.
Non-captive rod: allows replacement of the master cylinder without removing the control rod.
Visual identification: RED clamp for the 22.2 mm diameter.

Products intended for vehicle modification for competition purposes may render their use prohibited on public roads, insofar as they significantly alter the vehicle's characteristics as specified in the type-approval certificate issued by the relevant authorities (noise level, pollutant emissions, maximum speed, tire dimensions, etc.).