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AP Racing

AP CP4400 Master Cylinder

AP CP4400 Master Cylinder

Regular price £239.99 GBP
Regular price Sale price £239.99 GBP
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Bore Size
Pushrod Length
Quantity

The CP4400 Compact Master Cylinder is designed with a centre-lock bulkhead fixing (10–22mm), making it ideal for installations in composite structure race cars where space and mounting flexibility are critical.

With inlet and outlet ports positioned at the end of the cylinder, it provides improved clearance for components such as steering racks, making it well suited to tight cockpit and pedal box layouts.

Manufactured from lightweight aluminium alloy and featuring extra short travel to cut-off, it delivers precise and consistent hydraulic performance for race and rally applications.



Part Number Bore (mm) Pushrod Thread Pushrod Length Weight (kg) Pushrod Length
CP4400-91PRT135E 17.8 5/16" UNF (PRT) 135mm 0.29 Standard
CP4400-93PRM135E 20.6 M8 x 1.25 (PRM) 135mm 0.29 Standard
CP4400-93PRT180E 20.6 5/16" UNF (PRT) 180mm 0.29 Longer 

Key Features

  • Centre-lock bulkhead fixing (10–22mm range)
  • End-mounted inlet/outlet ports for improved clearance
  • Lightweight aluminium alloy construction
  • Extra short travel to cut-off for improved response
  • Designed for compact pedal box and bulkhead installations

General Specifications

  • Weight: 0.29kg (0.64lbs)
  • Full Stroke: 25.4mm (1.00")
  • Travel to Cut-Off: 0.48–0.63mm (extra short)
  • Inlet Thread: 7/16" x 20UNF
  • Outlet Thread: 3/8" x 24UNF
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