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How to determine the engine capacity on a motorcycle up to 125 cc, Chinese mopeds. I show external differences with a high probability of coincidence + made a table of popular volumes 50 cc, 70 cc, 80 cc, 100 cc, 110 cc, 120 cc, 125 cc, 127 cc. • The difference between the pistons of the Alpha 50-120cc moped - the difference between the pistons, an old video. • The difference between the heads of the Alpha 50-120cc moped - the difference between the heads, an old video. https://vk.com/photo575938063_457239406 - link to the table from the video