Download of MiniBikers 1.4 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The application belongs to Games. The actual developer of this software for Mac is Ivanovich Games.
From the developer:
MiniBikers is a 3D arcade racing game for Mac OS X. Enjoy three completely different game modes with Tournament Mode, in which the challenges make you prove yourself as a rider. The seasonal mode allows you to race the entire 2015 Minibikers championship and become the World Champion.
You may want to check out more software for Mac, such as OneLapChallange, DynaStunts or Galactic Driver, which might be similar to MiniBikers.