Part# 06-11000
MFR Model# MCMC-5
DescriptionPart Number


MATCO mfg's MCMC-5 master cylinder uses a INTERNAL reservoir. The MCMC-5 can be used in individual or dual brake applications. Buna-n orings are used in this assembly. Mil-H-5606 aircraft hydraulic fluid or compatible fluids are reccomended. DOT5 may be used but not DOT5.1 which contains glycol. DOT3 and DOT4 may not be used and will cause immediate damage to the seals.
The MC-5 has an adjustable clevis. The MC-5 can not be used in series with a second MC-5 or MC-5A.
Vertical Style - Cylinder for vertical mounting, with steel housing and reservoir.

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  • Measures 8.25 inches from end to end.
  • Measures 7.7 inches from mounting hole to mounting hole.
  • A 0.625 inch diameter piston is used.
  • Stroke is approximately 1.388 inches.
  • Displacement is 0.43 cubic inches.
  • The ports on all MATCO mfg master cylinders are 1/8 inch NPT (except the MC-4E).


Perfect product, Perfect seller!

Besnik L Verified Purchase


September 12, 2021

Fast delivery too Sweden even due to the fact that UPS is an old fashioned company from 1800 something. You need to sit at home the hole day to wait. They can not give an approx time. Will avoid them in the future.

Jan J
June 12, 2020

Shell embodiment on MC5 is not steel it is aluminum. The lower pivot is round and may not fit between a slab bracket. There is a PDF drawing with minimum extended length downloadable from Spruce.

September 26, 2019

I ordered an MC-5A. The wrapping was labelled MC-5A but the actual part inside was labelled MC-5 which is 1/2 longer than the A. Also, the inlet thread for the fluid was defective and had to be repaired. The bottom attachment point did not have a clean 0.187 dia hole to get bolt through. These had to be reamed to size.

Brad L
May 7, 2018


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the diameter of the resorvoir? This will help me with clearance design around my feet.

Please view the MC-5 Drawing found in the "Documents" tab of this web page for all dimensional information.

Q: Can these Matco MCMC-5 master cylinders be used on certified aircraft?

No, these are intended for use on experimental aircraft only.

Q: How is the reservoir filled when bleeding the system?

The system is bled from the caliper up. The reservoir is considered full when it is about 1/4" below the cap.

Q: Do you have a seal replacement kit for these reservoirs?

The reservoir on the MCMC-5 is vented to atmosphere and is not sealed. There is an o-ring under the cap but its function is to keep fluid from sloshing out. The reservoir has to be the highest point in the hydraulic system of fluid can run out of it.

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