![CP2623 - Flange Mounted [Imperial Hydraulic Threads] - Race and Rally](http://raceandrally.com/cdn/shop/files/CP2623-94_c3d4e001-66f3-4419-9242-baad4788b90a.png?v=1778508930&width=1445)
CP2623 - Flange Mounted Master Cylinder [Imperial Hydraulic Threads]
A compact forged bodied flanged master cylinder suitable for all brake and clutch applications especially where space is restricted.
Identical to CP5623 but with Imperial Hydraulic Threads.
Features:
- Forged Aluminium Alloy Body
- 50g weight saving over cast version
- Short travel to cut-off
- 10 Available bore sizes
- Non Captive Cylinders available
- Hydraulic threads are imperial.
Master Cylinder Identification:
All AP Racing master cylinders have their part number nominal bore size laser marked on the body together with batch codes enabling full manufacturing traceability. All master cylinders also have a coloured tie wrapped around the body for quick visual identification of bore size.
Technical Details:
| Weight | |
| -88 to -92 | 0.260 Kg (0.573 lbs) |
| -93 to -94 | 0.300 Kg (0.661 lbs) |
| -95 to -96 | 0.340 Kg (0.750 lbs) |
| Full Stroke | 25.4mm (1.00") |
| Travel to Cut-off | 0.68mm - 1.09mm (0.027" - 0.043") |
| Hydraulic Thread | |
| - Inlet | 7/16" x 20 UNF |
| - Outlet | 3/8" x 24 UNF |
| Push Rod Threads | |
| - PRM | M8 x 1.25 |
| - PRT | 5/16" UNF |
| Push Rod Length from Mounting Flange | |
| PRM065 | 65mm |
| PRM088 | 88mm |
| PRM/PRT115 | 115mm (4.53") |
| PRM/PRT160 | 160mm (6.30") |
CP2623 Part Numbering
Available Bore Sizes |
M8 Push Rod |
5/16" Push Rod |
Non-Captive Cylinders |
Repair Kit |
| 14.0mm |
CP2623-88PRM115 |
CP2623-88PRT115 CP2623-88PRT160 |
CP2623-88NC |
CP2623-88RK |
| 15.0mm | ||||
| 15.9mm | (0.625") | 5/8" | ||||
| 16.8mm | ||||
| 17.8mm | (0.700") | ||||
| 19.1mm | (0.750") | 3/4" | ||||
| 20.6mm | (0.812") | 13/16" | ||||
| 22.2mm | (0.875") | 7/8" | ||||
| 23.8mm | (0.937") | 15/16" | ||||
| 25.4mm | (1.00") |
Installation Drawing

Repair Kits
Each repair kit is in accordance to Bore Diameter of Master Cylinder:
- Ø14.00mm Bore - CP2623-88RK
- Ø15.00mm Bore - CP2623-89RK
- Ø15.90mm Bore - CP2623-90RK
- Ø16.80mm Bore - CP2623-905RK
- Ø17.80mm Bore - CP2623-91RK
- Ø19.10mm Bore - CP2623-92RK
- Ø20.60mm Bore - CP2623-93RK
- Ø22.20mm Bore - CP2623-94RK
- Ø23.80mm Bore - CP2623-95RK
- Ø25.40mm Bore - CP2623-96RK
| Brand | AP Racing | |
|---|---|---|
| Options | SKU | Barcode |
| 14.00mm / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-88PRT115 | |
| 14.00mm / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-88PRT160 | |
| 14.00mm / M8 x 1.25 / 115mm | 4.53" | CP2623-88PRM115 | |
| 14.00mm / M8 x 1.25 / 160mm | 6.30" | CP2623-88PRM160 | |
| 15.00mm / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-89PRT115 | |
| 15.00mm / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-89PRT160 | |
| 15.00mm / M8 x 1.25 / 115mm | 4.53" | CP2623-89PRM115 | |
| 15.00mm / M8 x 1.25 / 160mm | 6.30" | CP2623-89PRM160 | |
| 15.90mm | (.625") | 5/8" / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-90PRT115 | |
| 15.90mm | (.625") | 5/8" / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-90PRT160 | |
| 15.90mm | (.625") | 5/8" / M8 x 1.25 / 115mm | 4.53" | CP2623-90PRM115 | |
| 15.90mm | (.625") | 5/8" / M8 x 1.25 / 160mm | 6.30" | CP2623-90PRM160 | |
| 16.80mm / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-905PRT115 | |
| 16.80mm / M8 x 1.25 / 115mm | 4.53" | CP2623-905PRM115 | |
| 17.80mm | (0.70") / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-91PRT115 | |
| 17.80mm | (0.70") / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-91PRT160 | |
| 17.80mm | (0.70") / M8 x 1.25 / 115mm | 4.53" | CP2623-91PRM115 | |
| 17.80mm | (0.70") / M8 x 1.25 / 160mm | 6.30" | CP2623-91PRM160 | |
| 19.10mm | (0.75") | 3/4" / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-92PRT115 | |
| 19.10mm | (0.75") | 3/4" / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-92PRT160 | |
| 19.10mm | (0.75") | 3/4" / M8 x 1.25 / 115mm | 4.53" | CP2623-92PRM115 | |
| 19.10mm | (0.75") | 3/4" / M8 x 1.25 / 160mm | 6.30" | CP2623-92PRM160 | |
| 20.60mm | (.812") | 13/16" / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-93PRT115 | |
| 20.60mm | (.812") | 13/16" / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-93PRT160 | |
| 20.60mm | (.812") | 13/16" / M8 x 1.25 / 115mm | 4.53" | CP2623-93PRM115 | |
| 20.60mm | (.812") | 13/16" / M8 x 1.25 / 160mm | 6.30" | CP2623-93PRM160 | |
| 22.20mm | (.875") | 7/8" / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-94PRT115 | |
| 22.20mm | (.875") | 7/8" / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-94PRT160 | |
| 22.20mm | (.875") | 7/8" / M8 x 1.25 / 115mm | 4.53" | CP2623-94PRM115 | |
| 22.20mm | (.875") | 7/8" / M8 x 1.25 / 160mm | 6.30" | CP2623-94PRM160 | |
| 23.80mm | (.937") | 15/16" / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-95PRT115 | |
| 23.80mm | (.937") | 15/16" / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-95PRT160 | |
| 23.80mm | (.937") | 15/16" / M8 x 1.25 / 115mm | 4.53" | CP2623-95PRM115 | |
| 23.80mm | (.937") | 15/16" / M8 x 1.25 / 160mm | 6.30" | CP2623-95PRM160 | |
| 25.40mm | (1.00") / 5/16" x 24 UNF / 115mm | 4.53" | CP2623-96PRT115 | |
| 25.40mm | (1.00") / 5/16" x 24 UNF / 160mm | 6.30" | CP2623-96PRT160 | |
| 25.40mm | (1.00") / M8 x 1.25 / 115mm | 4.53" | CP2623-96PRM115 | |
| 25.40mm | (1.00") / M8 x 1.25 / 160mm | 6.30" | CP2623-96PRM160 | |