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JEGS Universal Master Cylinder 1-1/8" Bore

JEGS 631406

555-631406

JEGS Universal Master Cylinder 1-1/8" Bore $77.99
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Aerospace Components Aluminum Master Cylinder 1 1/8 Bore Size
Aerospace Components 026-AC-MC-01
$109.00
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Universal Master Cylinder
  • 1-1/8" Bore
  • Aluminum body
  • Composite Dual Reservoir
  • Holes Provided for Fabricating Side Mount
  • 1/2"-20 Ports
    Includes:
  • (2) 1/2"-20 IFM to 3/8"-24 IFF Fittings
  • (1) Boot
  • (1) 3/8"-24 Rod

  • JEGS 631406 Details

    Master Cylinder with Adapter Fittings Only

      Dimensions:
    • Mounting holes are 5/16" and are on 3-3/16" (3.188) centers.
    • Overall Length: 8.25"
    • Overall Width: 3.5"
    • Height from base to top of reservoir: 4.5"
    • Spacing between inlet fittings 3.0"
    • Length of plastic reservoir 6.5"
    • Spacing from front to centerline of first inlet fitting: 1"


    3/8"-24 Threads

    Specifications:

    Reservoir Included
    Yes
    Master Cylinder Cap Included
    Yes
    Master Cylinder Material
    Aluminum
    Brake Booster Included
    No
    Pushrod Included
    No
    Mounting Hole Quantity
    2 holes
    Quantity
    Sold individually
    Reservoir Material
    Aluminum
    Master Cylinder Bore Size (in.)
    1.125
    Master Cylinder Finish
    Natural
    Bowl Design
    Dual
    Hardware Included
    Yes
    Mounting Brackets Included
    Yes
    Remote Reservoir
    No
    Front Brake Type
    Various - Application Specific
    Master Cylinder Stroke (in.)
    1.35
    Mounting Flange Center to Center Distance (in.)
    N/A
    Shipping Weight:
    4.80
    Package Height:
    5.600
    Package Width:
    5.500
    Package Depth:
    10.700
    Manufacturer's Part Number:
    260-8555-BK-MBM

    JEGS Universal Master Cylinder and Master Cylinder Kits are available with two piston sizes for virtually any combination of drag racing, late model stock car, off-road or street rod braking system. Master cylinders feature aluminum body/composite dual reservoir with boot and 3/8"-24 rod in either a 1.031" piston (for drum/drum up to 2-piston front and 4-piston rear disc) or a 1.125" piston (for 2-piston front and 4-piston rear disc up to 4-piston front and 4-piston rear disc) systems. Each master cylinder also features extra, through body holes, for side mounting. Available either as a master cylinder with 1/2"-20 male x -3AN inverted flare female brake line adapter fittings only or in kit form with a universal billet mounting bracket/spacer, master cylinder, brake line adapter fittings and mounting hardware.

    631406 is rated 4.7 out of 5 by 3.
    Rated 5 out of 5 by from Light weight and clean Great kit. Very light and cleans up engine bay nicely
    Date published: 2015-11-21
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    • clientName_jegs

    Thanks for the advice. I ordered your rear disc conversion and it arrived a few days ago. Will my old linelock system work without interfering with the master cylinder, or would you advise to get a more modern one, or not to use one at all.

    Asked by: Phil H
    The standard line lock kit will sell is made for the front brakes and will not be affected by the rear disc kit.
    Answered by: Rusty B
    Date published: 2018-06-15

    Have a 1967 Mustang I'm converting to disc brakes. Maybe 4 wheel-not sure. B4 once the drums got a little glazed at126 mph thru the traps meant funny car turnaround. Will this work for 2/4wheel conversion and make a better stop w/out Gorilla leg?

    Asked by: Phil H
    This will provide more braking power than your original brakes and should be used in a disc/disc setup.
    Answered by: Rusty B
    Date published: 2018-06-11

    Does rod pivot where it engages the master cylinder, or is it screwed in solid to the master cylinder? I need a rod that pivots for a 63 Lemans. And, can I get the rod in a longer length (say 6")? I can extend the rod, but I need the pivot.

    Asked by: Thud
    This rod will pivot in the master cylinder. We do not have this with a long pushrod.
    Answered by: Rusty B
    Date published: 2018-06-05

    Does master cylinder 555-631406 require a booster and what type of racing pedal will fit it?

    Asked by: stephen15
    These do not require a booster, they are designed for manul race car brake system. Most pedals can be connected to this master cylinder.
    Answered by: Rusty B
    Date published: 2018-03-17

    I have a 83 Monte ss that needs just master cylinder and rod that this universal kit comes with can i use this kit for it? It's is a drag car I'm not using a brake booster just master and push rod is all I need can use this universal kit?

    Asked by: Monte83ss
    It is universal, so as long as it fits your application than it should work for your application.
    Answered by: Rusty B
    Date published: 2017-11-02
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