AP Racing front-wheel-drive master cylinder, effective diameter 22.4 mm, M8 x 1.25

Reference: AP-CP6467-224PRS

Supplier Ref.: CP6467-224PRME:S

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The AP Racing master cylinder with an effective hydraulic diameter of 22.4 mm, part number CP6467-224PRME:S, uses a central valve for competition applications with ABS and high-pressure circuits. Its trunnion mounting on needle bearings allows it to be integrated into a compatible pedal support.

The :S version features a sleeve in place of the anti-knockback device. The effective diameter of 22.4 mm is used for hydraulic sizing; it does not correspond to the physical bore of 25.4 mm.

The forged aluminum body and tension-loaded design limit lateral forces on the piston. The low-profile connections allow for a compact installation.

Technical Specifications

Brand: AP Racing.
Manufacturer Part Number: CP6467-224PRME:S.
Range: CP6467.
Tractioncontrol: Pull-type.
Mounting: Trunnion on needle bearings.
Effective hydraulic diameter: 22.4 mm - 0.882 in.
Identification clamp color: RED / WHITE.
Total stroke: 25.4 mm.
Hydraulic inlet: Special push-fit fitting.
Hydraulic outlet: M10 × 1.0.
Shaft thread: M8 × 1.25.
Body material: Forged aluminum.
Listed weight for the range: 240 to 280 g, depending on the version.
Actual bore: 25.4 mm.
Internal rod diameter: 12 mm.
Effective hydraulic area: 395.49 mm².
Version::S - sleeve, without anti-knockback device.

Color-coded diameter identification

AP Racing master cylinders are supplied 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 pull-type master cylinders. This part number has a RED/WHITE clamp corresponding to 22.4 mm - 0.882 in.

Color	Diameter in mm	Diameter in inches
BLACK / RED	14.9 mm	0.587 in
BLACK	16.2 mm	0.638 in
BLUE	17.3 mm	0.681 in
GREEN	18.8 mm	0.740 in
ORANGE	20.2 mm	0.795 in
ORANGE / RED	21.2 mm	0.834 in
RED	21.8 mm	0.858 in
RED / WHITE	22.4 mm	0.882 in
WHITE	23.7 mm	0.933 in
YELLOW	25.4 mm	1.00 in

Replacement Parts and Repair Kit

Repair kit part number: AP Racing CP6467-224RK, sold separately.

Mounting and Connections

Verify compatibility of the pedal support, master cylinder, and special inlet fittings. Use the effective hydraulic diameter for pressure and fluid displacement calculations. The :S version does not include the anti-knockback device found on the :K version.

Photo and Master Cylinder Selection

The photo shows the AP Racing CP6467 range and is not binding regarding the color of the identification clamp. To select the model suitable for your mounting, refer to the part number and technical specifications listed in this data sheet.

Before ordering, be sure to check the master cylinder diameter, thread sizes, and fastening type. If you have any questions, our technicians can help you select the correct part number for your system. Feel free to contact them.

Key Features

Tension-type design: minimizes lateral forces.
Central valve: suitable for applications with ABS and high pressures.
Forged aluminum body.
Pivot mounted on needle bearings.
Low-profile connections.
Visual identification: RED/WHITE clamp for the effective diameter of 22.4 mm.

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.).