![CP2623 - Flange Mounted Master Cylinder [Imperial Hydraulic Threads]](http://raceandrally.com/cdn/shop/files/CP2623-96NC.png?v=1782212885&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 | 25.40mm (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 (2.56") |
| - PRM088 | 88mm (3.46") |
| - PRM/PRT115 | 115mm (4.53") |
| - PRM/PRT160 | 160mm (6.30") |
CP2623 Part Numbering
Available Bore Sizes |
Cable Tie Colour |
M8 Push Rod |
5/16" Push Rod |
Non-Captive Cylinders |
Repair Kit |
| 14.0mm | BLACK & ORANGE |
CP2623-88PRM115 CP2623-88PRM160 |
CP2623-88PRT115 CP2623-88PRT160 |
CP2623-88NC |
CP2623-88RK |
| 15.0mm | BLACK & RED |
CP2623-89PRM115 CP2623-89PRM160 |
CP2623-89PRT115 CP2623-89PRT160 |
CP2623-89NC | CP2623-89RK |
| 15.9mm | (0.625") | 5/8" | BLACK |
CP2623-90PRM115 CP2623-90PRM160 |
CP2623-90PRT115 CP2623-90PRT160 |
CP2623-90NC | CP2623-90RK |
| 16.8mm | BLACK & YELLOW |
CP2623-905PRM115 |
CP2623-905PRT088 CP2623-905PRT115 |
CP2623-905RK | |
| 17.8mm | (0.700") | BLUE |
CP2623-91PRM088 CP2623-91PRM115 CP2623-91PRM160 |
CP2623-91PRT115 CP2623-91PRT160 |
CP2623-91NC | CP2623-91RK |
| 19.1mm | (0.750") | 3/4" | GREEN |
CP2623-92PRM115 CP2623-92PRM160 |
CP2623-92PRT115 CP2623-92PRT160 |
CP2623-92NC | CP2623-92RK |
| 20.6mm | (0.812") | 13/16" | ORANGE |
CP2623-93PRM088 CP2623-93PRM115 CP2623-93PRM160 |
CP2623-93PRT115 CP2623-93PRT160 |
CP2623-93NC |
CP2623-930RK CP2623-930PRK |
| 22.2mm | (0.875") | 7/8" | RED |
CP2623-94PRM088 CP2623-94PRM115 CP2623-94PRM160 |
CP2623-94PRT115 CP2623-94PRT160 |
CP2623-94NC | CP2623-94RK |
| 23.8mm | (0.937") | 15/16" | WHITE |
CP2623-95PRM115 CP2623-95PRM160 |
CP2623-95PRT115 CP2623-95PRT160 |
CP2623-95NC | CP2623-95RK |
| 25.4mm | (1.00") | YELLOW |
CP2623-96PRM088 CP2623-96PRM115 CP2623-96PRM160 |
CP2623-96PRT115 CP2623-96PRT160 |
CP2623-96NC | CP2623-96RK |
Installation Drawing

Replacement Parts
Description |
Part Number |
Image |
| Female Inlet Adaptor (7/16" UNF) | CP2293-134 | |
| Copper Gasket for Above | KL44539 | |
| 7/16" UNF Inlet Push-on Adaptor kit for Ø5/16" Hose | CP2623-30 | |
| 7/16" UNF Inlet Push-on Banjo Adaptor kit for Ø5/16" Hose | CP2623-41 | |
| 3/8" UNF Outlet Push-on Adaptor for Ø5/16" Hose | CP2623-250 |
|
| 3/8" O-Ring for above | CP6116-109 |
|
| Captive Push Rod | ||
| 5/16" x 24 UNF - 107mm Long | CP2142-1 | |
| 5/16" x 24 UNF - 152mm Long | CP2142-13 | |
| M8 x 1.25 - 115mm Long | CP2142-19 |
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| M8 x 1.25 - 152mm Long | CP2142-22 | |
| Non-Captive Push Rod | ||
| 5/16" x 24 UNF - 112mm Long | CP2142-45 | |
| 5/16" x 24 UNF - 157mm Long | CP2142-47 | |
| M8 x 1.25 - 157mm Long | CP2142-48 | |
| M8 x 1.25 Locknut | ME21101 | |
| 5/16" x 24 UNF Locknut | K24102 |
| Brand | AP Racing | |
|---|---|---|
| Option | 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 | |
| 14.00mm / Non-Captive / Not Required | CP2623-88NC | |
| 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 | |
| 15.00mm / Non-Captive / Not Required | CP2623-89NC | |
| 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 / 65mm | 2.55" | CP2623-90PRM065 | |
| 15.90mm | (.625") | 5/8" / M8 x 1.25 / 88mm | 3.46" | CP2623-90PRM088 | |
| 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 | |
| 15.90mm | (.625") | 5/8" / Non-Captive / Not Required | CP2623-90NC | |
| 16.80mm / 5/16" x 24 UNF / 88mm | 3.46" | CP2623-905PRT088 | |
| 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 / 88mm | 3.46" | CP2623-91PRM088 | |
| 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 | |
| 17.80mm | (0.70") / Non-Captive / Not Required | CP2623-91NC | |
| 19.10mm | (0.75") | 3/4" / 5/16" x 24 UNF / 88mm | 3.46" | CP2623-92PRT088 | |
| 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 / 88mm | 3.46" | CP2623-92PRM088 | |
| 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 | |
| 19.10mm | (0.75") | 3/4" / Non-Captive / Not Required | CP2623-92NC | |
| 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 / 88mm | 3.46" | CP2623-93PRM088 | |
| 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 | |
| 20.60mm | (.812") | 13/16" / Non-Captive / Not Required | CP2623-93NC | |
| 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 / 88mm | 3.46" | CP2623-94PRM088 | |
| 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 | |
| 22.20mm | (.875") | 7/8" / Non-Captive / Not Required | CP2623-94NC | |
| 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 | |
| 23.80mm | (.937") | 15/16" / Non-Captive / Not Required | CP2623-95NC | |
| 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 / 88mm | 3.46" | CP2623-96PRM088 | |
| 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 | |
| 25.40mm | (1.00") / Non-Captive / Not Required | CP2623-96NC | |












