1986 mk2 gti- which master cylinder is the original bore size?

Discussion in 'Chassis' started by Ken Shields, Jul 20, 2019.

  1. Ken Shields New Member

    Jul 18, 2019
    Likes Received:
    Hi All,

    2 are listed by suppliers with 20.64mm and 22.22mm bores. There are other different dimensions described such as overall length and pushrod length, as 2 different servos were used in the 1982-1992 model lifetime.

    Does anybody know the original part number for the earliest type m/c or its actual size?

    or does it matter as many people just bolt on the bigger m/c as an upgrade?

  2. GVK

    GVK Forum Addict

    Oct 23, 2003
    Likes Received:
    22mm fitted as an upgrade when fitting larger brakes on the front

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