T: (800) 992-7007

P: (530) 777-7759

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Keeping classic Minis on the road since 1974

(800) 992-7007 | (530) 886-0771

Brake master cylinders, parts, and accessories for the classic Mini, Mini Cooper, and variants.

Products 1-36 of 36
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Banjo Bolt, Hydraulic Systems
Price: $12.95
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In Stock
Item #: C5192 -

    All Verto clutch slaves use this hollow bolt to attach the flex hose to the cylinder. Also used on some brakes switches used with tandem master cylinders.

    Base Plate, Brake Master Cylinder, 1989-on
    Price: $19.95
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    6/30/2020 12:00:00 AM 24.9500
    In Stock
    Item #: CRC8664 -

      Master cylinder base plate for 1989-on classic Minis with servo built into the brake master cylinder.

      Master Cylinder Repair Kit, .75, ring seals
      Price: $10.95
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      In Stock
      Item #: GRK3004 -

        This repair kit will fit both the classic Mini .75'' bore clutch master cylinders and early .75'' brake master cylinders.

        Brake Line Kit to Servo, 1989-on, Braided
        Price: $54.95
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        Out of Stock
        Item #: SEN45 -

          Pair of flexible braided steel lines with fittings to replace the solid steel lines between the horizontal brake master cylinder and the junction.

          Brake Master Cylinder Rebuild Kit, .70" Cup Seal
          Price: $10.95
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          In Stock
          Item #: GRK1028 -

            Brake master cylinder rebuild kit for the single line brake master cylinder. The .70" master cylinders use either the cup type seal on early cylinders or the ring type on

            Brake Master Cylinder Rebuild Kit, .70 Ring Seal
            Price: $10.95
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            In Stock
            Item #: GRK1006 -

              Most original brake masters using the early cup seal have by now been replaced with the ring seal design as found in this kit.

              Brake Master Cylinder Rebuild Kit, 0.75" Cup
              Price: $10.95
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              In Stock
              Item #: GRK1026 -

                If you have a very early 0.75" bore brake master cylinder, it may use the early design cup primary seal at the top end of the piston.

                Brake Master Cylinder Rebuild Kit, 1989-on
                Price: $19.95
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                In Stock
                Item #: GRK1032 -

                  In 1989, a direct-acting servo with master cylinder was fitted to the Mini. This kit repairs the cylinder only, see GSM0120 for the servo repair kit.

                  Brake Master Cylinder Rebuild Kit, Tandem, 1979-May 1985
                  Price: $39.95
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                  In Stock
                  Item #: GRK1016 -

                    Brake master cylinder repair kit for five different master cylinders, as used from 1979 to May 1985

                    Brake Master Cylinder Rebuild Kit, Tandem, Diagonal Split 1975-80
                    Price: $59.95
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                    In Stock
                    Item #: GRK1002 -

                      Repair kit for the GMC167 brake master cylinder, as used from 1975 to 1980

                      Brake Master Cylinder Rebuild Kit, Tandem, Early Round Reservoir
                      Price: $27.95
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                      In Stock
                      Item #: GRK1019 -

                        Reproduction of the repair kit required by the earliest tandem master cylinders used on the classic Mini.

                        Brake Master Cylinder Rebuild Kit, Tandem, Early Round Reservoir, OE
                        Price: $34.95
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                        10/9/2019 12:00:00 AM 35.9500
                        In Stock
                        Item #: GRK1019-OE -

                          OE version of the repair kit required by the earliest tandem master cylinders used on the classic Mini.

                          Brake Master Cylinder Rebuild Kit, Tandem, Stepped bore
                          Price: $46.95
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                          In Stock
                          Item #: GRK1035 -

                            This repair kit fits the stepped-bore GMC0227 brake master cylinder that was original equipment on all classic Minis from May 1985-on, and commonly retrofitted to 1979-1985 Minis.

                            Brake Master Cylinder, 0.70 Bore, OE
                            Price: $89.95
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                            11/10/2017 12:00:00 AM 89.9500
                            In Stock
                            Item #: GMC0171 -

                              This is the most commonly-used master cylinder for single line (not tandem) systems, with .70'' bore size. OEM version

                              Brake Master Cylinder, 0.70 Metal Tank
                              Price: $129.95
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                              5/24/2019 12:00:00 AM 134.9500
                              Out of Stock
                              Item #: GMC171-OE -

                                This was the most commonly used master cylinder for single line brake systems; bore size .70''. Available still with the metal ''bean can'' reservoir but with a plastic cap.

                                Brake Master Cylinder, 1975-80, Diagonal System
                                Price: $209.95
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                                In Stock
                                Item #: GMC0167 -

                                  Correct GMC167 replacement master cylinder for classic Minis with diagonal split dual braking system, as used from the end of 1975 through 1980

                                  Brake Master Cylinder, 1989-on, Horizontal
                                  Price: $139.95
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                                  5/24/2019 12:00:00 AM 144.9500
                                  In Stock
                                  Item #: GMC0242 -

                                    This is the hydraulic cylinder only that mounts to the servo-assist unit fitted from 1989-on. OEM version.

                                    Brake Master Cylinder, Cooper S
                                    Price: $129.95
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                                    5/24/2019 12:00:00 AM 139.9500
                                    In Stock
                                    Item #: GMC172-OE -

                                      For the restoration purist, the original Cooper S master cylinder has been remade. Features a large metal tank, now in a plated finish, and original 0.70'' bore diameter.

                                      Brake Master Cylinder, Tandem, 1977-1989
                                      Price: $139.95
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                                      12/5/2018 12:00:00 AM 139.9500
                                      Out of Stock
                                      Item #: GMC0227 -

                                        This stepped bore (.70''/.75'') tandem master cylinder replaces all master cylinders used from Sept. 1978 (rectangular reservoir) until the combined servo-master was fitted in 1989.

                                        Brake Pipe Conversion Kit, GMC0227, Left Hand Drive
                                        Price: $33.95
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                                        In Stock
                                        Item #: BAU5655 -

                                          If you are fitting a GMC227 stepped brake master cylinder to a Mini built before April 1985, then this is kit is required for left-hand drive cars.

                                          Brake Pipe Conversion Kit, GMC0227, Right Hand Drive
                                          Price: $32.95
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                                          In Stock
                                          Item #: BAU5654 -

                                            If you are fitting a GMC227 stepped-bore tandem master to a Mini built before May 1985, this kit is required for right-hand drive cars.

                                            Brake Servo Repair Kit, 1989-on
                                            Price: $129.95
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                                            Out of Stock
                                            Item #: GSM0120 -

                                              Major repair kit includes the diaphragm and all rubber seals required to recondition the vacuum servo unit. See GRK1032 for repair kit for the master cylinder.

                                              Cap, Early Master Cylinder, Metal
                                              Price: $14.95
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                                              In Stock
                                              Item #: 17H3723 -

                                                Metal master cylinder cap, as originally fitted to 1959-1963 classic Minis on single-line brake and clutch master cylinder. Includes new rubber seal to reduce leaks at the cap.

                                                Cap, early tandem brake master cylinder
                                                Price: $16.95
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                                                In Stock
                                                Item #: AAU3815 -

                                                  Large diameter cap for early tandem brake master cylinders as fitted to Canadian Minis, Austin Americas, or Minis converted to dual-circuit systems. Approximately 3.375" diameter.

                                                  Cap, Master Cylinder, Single Line
                                                  Price: $5.95
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                                                  In Stock
                                                  Item #: 513123 -

                                                    Plastic cap fits all classic Mini clutch master cylinders and single-line brake master cylinder.

                                                    Clevis Pin, Master Cylinder to Brake or Clutch Pedal
                                                    Price: $2.00
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                                                    In Stock
                                                    Item #: CLZ0512 -

                                                      Clevis pin to connect the master cylinder pushrod to the pedal; works for brake or clutch

                                                      Filler Cap, Late Master Cylinder, with Fluid Switch
                                                      Price: $22.95
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                                                      In Stock
                                                      Item #: GRK6009 -

                                                        This cap with integrated fluid level switch replaces the earlier cap used on late brake master cylinders GMC227 and GMC242. Seals better and at lower cost. Same as Rover CDU3161EVA

                                                         Filler Cap, Tandem Master
                                                        Price: $14.95
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                                                        In Stock
                                                        Item #: AAU8240 -

                                                          Filler cap for dual brake master cylinder with rectangular tank, prior to addition of fluid level switch in the cap. Will also replace the cap with the fluid level warning switch.

                                                          Gasket, Master Cylinder Plate
                                                          Price: $6.95
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                                                          In Stock
                                                          Item #: NAM9197 -

                                                            This is the foam rubber gasket for use under the metal master cylinder/heater hose metal plate on top of the bulkhead. Was ALA6598.

                                                            Gasket, master cylinder seating
                                                            Price: $2.50
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                                                            In Stock
                                                            Item #: 31G0279 -

                                                              Paper gasket under flange of master cylinder on the firewall shelf.

                                                              Master Cylinder Extension, Single System
                                                              Price: $16.95
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                                                              In Stock
                                                              Item #: BHA4661 -

                                                                A useful increase of the fluid volume can be obtained by fitting this extension to the neck of both clutch and single system metal brake or clutch master cylinders.

                                                                O-ring, Master Cylinder Neck Extension
                                                                Price: $1.95
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                                                                In Stock
                                                                Item #: BCA4964 -

                                                                  O-ring used to seal BHA4661 plastic master cylinder extension neck.

                                                                  Seal, Master Cylinder to Servo, 1988-on
                                                                  Price: $3.25
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                                                                  In Stock
                                                                  Item #: NAM8570 -

                                                                    Seal between the brake servo and master cylinder; fits all Classic Minis with the power brake servo mounted directly to the master cylinder.

                                                                    Seating Gasket, Tandem Master
                                                                    Price: $2.95
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                                                                    In Stock
                                                                    Item #: 31G0840 -

                                                                      Thick paper gasket, sized to match the mounting flange of all dual-circuit master cylinders used on the classic Mini

                                                                      Upper Stabilizer Bracket, Bulkhead
                                                                      Price: $21.95
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                                                                      10/15/2019 12:00:00 AM 23.9500
                                                                      Out of Stock
                                                                      Item #: 14A6733 -

                                                                        Bracket on right-hand side of firewall shelf locates the upper engine stabilizer. The brake master cylinder hole is sized for a single-circuit master cylinder

                                                                        Upper Stabilizer Bracket, Bulkhead, 76-on
                                                                        Price: $21.95
                                                                        View
                                                                        10/15/2019 12:00:00 AM 24.9500
                                                                        In Stock
                                                                        Item #: ALA6505 -

                                                                          Upper bracket for engine stabilizer arm at the firewall. For classic Minis fitted with dual-line brake master cylinder.