Engine Break In

Guys need help here.. btw newbie here.. i'm still 600km but i'm having difficulties on acceleration, i'm going over rev if i exceed on the following:



1st gear - 15kph

2nd gear - 25 kph

3rd gear - 40 kph

4th gear - 50 kph

5th gear - 60 kph



Is this normal for engine break in? Thank you.



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