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chain wont fit drive sprocket

  1. frostic

    Drive sprocket too large?

    Hello, I recently got an 80cc engine kit and put it on my cruiser bike. when i tryed to put the chain on i noticed that the drive sprocket DON'T fit the chain. it is a 415 chain and works on another motorized bike without issues. do i have to buy a new drive sprocket? why don't the chain fit? i...