# AP Racing Master Cylinder, Ø 20.6 mm - 5/16 in-24 UNF push rod, 135 mm

> AP Racing master cylinder, 20.6 mm diameter, for racing. Mounting to the bulkhead, with a 5/16 in-24 UNF rod measuring 135 mm and a stroke of 25.4 mm.

- URL: https://www.gt2i.ch/en/master-cylinder-without-reservoir/49115-ap-racing-master-cylinder-o-206-mm-5-16-in-24-unf-push-rod-135-mm-3661768275252.html
- Reference: AP-CP4400-93T135
- Price: CHF 301.00
- Brand: AP RACING
- Availability: out of stock

## Description

With its 20.6 mm bore, the AP Racing CP4400-93PRT135E master cylinder is designed for use in a hydraulic control system for braking or clutch applications in racing. It features a center-mounted bulkhead mounting and a 135 mm 5/16 inn-24 UNF threaded rod, measured from the mounting point.
The central bulkhead mounting meets the requirements of composite structures in race cars.
Its cast aluminum body features a central mounting on a bulkhead ranging from 10 to 22 mm thick. The inlet and outlet openings are located at the end of the master cylinder, away from the bulkhead, to provide clearance around the mounting area.
Technical Specifications
Brand: AP Racing.
Manufacturer Part Number: CP4400-93PRT135E.
Range: CP4400.
Actuation: Push-type.
Mounting: Center-mounted on bulkhead.
Master cylinder diameter: 20.6 mm - 0.812 in - 13/16 in.
Identification clamp color: ORANGE.
Total stroke: 25.4 mm.
Hydraulic inlet: 7/16 in-20 UNF.
Hydraulic outlet: 3/8 in-24 UNF.
Stroke before supply shutoff: 0.48 to 0.63 mm - extra short.
Partition wall thickness for mounting: 10 to 22 mm.
Shaft thread: 5/16 in-24 UNF.
Rod length from mounting point: 135 mm.
Body material: Cast aluminum.
Listed weight: 290 g.
Color-coded diameter identification
AP Racing master cylinders come with a small colored plastic clamp wrapped around the body to make it easier to identify their diameter. The part number and nominal diameter are also marked on the body.
The following table applies to push-type master cylinders. This part number features an ORANGE clamp corresponding to 20.6 mm - 0.812 in - 13/16 in.
ColorDiameter in mmDiameter in inchesBLACK / ORANGE14 mm0.551 inBLACK / RED15 mm0.590 inBLACK15.9 mm0.625 in - 5/8 inBLACK / YELLOW16.8 mm0.661 inBLUE17.8 mm0.70 inGREEN19.1 mm0.75 in - 3/4 inORANGE20.6 mm0.812 in - 13/16 inRED22.2 mm0.875 in - 7/8 inWHITE23.8 mm0.937 in - 15/16 inYELLOW25.4 mm1.00 inReplacement Parts and Repair Kit
Repair kit part number: AP Racing CP2623-930RK or CP2623-930PRK, depending on the piston version; sold separately.
Mounting and Connections
Check the mounting, connections, and alignment of the control. The 135 mm dimension refers to the length of the rod from the mounting point, not that of the body. 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 CP4400 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 provided in this data sheet.
Before ordering, be sure to check the master cylinder diameter, threads, rod length, and fastening type. If in doubt, our technicians can help you select the correct part number for your installation. Feel free to contact them.
Key Features
Compact design.
Central mounting on bulkhead: suitable for composite structures in race cars.
Extra-short stroke before the fluid supply shuts off: 0.48 to 0.63 mm.
Hydraulic openings at the end: clearance around the bulkhead.
Visual identification: ORANGE clamp for the 20.6 mm diameter.

## Features

- Product type: 
- Length in mm: 135,0
- First word type: Master cylinder