tuning cam

Mini Dirt Bikes & Pit Bikes Forum

Help Support Mini Dirt Bikes & Pit Bikes Forum:

  1. A

    107cc chinese cam upgrade impressions

    Just did cam upgrade on our family's kids 107cc bike. I had previously modded cam sprocket bolt holes to oval shape to get advance/retard adjustability. I had tweaked stock cam back and forth for good bottom end grunt (it's easier to learn to ride a bike that is reluctant to bog and shut down...
Top