if you have or plan to get a big bore kit you will likely have to change the rocker arms from 69mm to 64mm. Most 139qmb qmb chinese scooters come stock with 69.
it's pretty easy, chill out and watch me do it! Then go do it yourself.
#139qmb #bbk #bigbore #diy #qmb #scooter #100cc #gy6 #50cc #sa88 #scooterarmy #52mm #88cc #105cc
Негізгі бет 139qmb rocker arms swap, 69mm to 64mm
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