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Factory exhaust diameter

sakis Feb 14, 2018

  1. sakis

    sakis Registered User

    Hello all,

    I recently bought a milltek downpipe for my mk2 tt-s, however I am fitting it onto the standard cat-back and need to buy a reducer but I am not certain of the factory cat-back diameter. Some say 63.5 while others say 60mm, anyone who can confirm?


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