As with all Mad Skills games all bikes and upgrades can be unlocked by playing for free! The more you play the more gold and silver coins you'll earn. Here are some tips to help you get the most coins and gold in the quickest time possible!
Watch ads for free gold
In the store you can watch an ad to get 5 free gold
You can do this multiple times a day (if an ad is available)
Invite your friends
Tap the invite friend button at the top of the main menu
Once a friend accepts your invite and downloads the game you will be rewarded with gold coins!
There is no limit to how many friends you can invite and rewards increase as you invite more friends