
These master cylinder repair kits from AP Racing are the ideal solution for reconditioning old or leaking master cylinders. A far cheaper alternative to replacing the whole cylinder the kits come complete with all seals and fittings required.
COMPATIBLE MASTER CYLINDERS:
- CP6461
- CP6465
- CP6468
CONTENTS OF REPAIR KIT:
- Primary Cup Seal
- Slydring Bearing
- Piston Washer
- D-section Piston Seal
- O-Ring cap seal
- Boot
INSTRUCTIONS:
In reference to the attached image,
-
Remove rubber boot (12) and circlip (9)
-
Carefully remove internal components
-
Replace the following (making sure all seals have been lubricated with brake Fluid);
-
Primary Seal (1)
-
Slydring Bearing (2)
-
Piston Washer (4)
-
D-section Piston Seal (5)
- O-ring End Cap Seal (8)
-
Check bore is free from debris
-
Lubricate bore with Brake Fluid
-
Reassemble internal components into body
-
Use original End Cap (9) to secure internal components.
Tighten to 24Nm (18lbsft) and use Loctite thread locker 242 or 243 - Fit new boot (12) to protect from debris

| Brand | AP Racing | |
|---|---|---|
| Option | SKU | Barcode |
| 14.90mm | (.587") | CP6465-149RK | |
| 16.20mm | (.638") | CP6465-162RK | |
| 17.30mm | (.681") | CP6465-173RK | |
| 18.80mm | (.740") | CP6465-188RK | |
| 20.20mm | (.795") | CP6465-202RK | |
| 21.20mm | (.834") | CP6465-212RK | |
| 21.80mm | (.858") | CP6465-218RK | |
| 22.40mm | (.882") | CP6465-224RK | |
| 23.70mm | (.933") | CP6465-237RK | |
| 25.40mm | (1.00") | CP6465-254RK | |