Even if the appearance suggests it, but in the voluminous bottom bracket area of the UNPLUGGED PRO hides no engine. Here Bold integrates the damper in the frame in a patented way. You still have to pedal the UNPLUGGED PRO yourself. If you ride super fast on tricky singletrails, you will love the calm handling of the Bold. The combination of high stack and short top tube makes the riding position pleasantly comfortable. The strongest case for this bike is however: The coherent geometry and grippy tires ensure full send mode on the trail. Check the size chart exactly before buying: the Bold UNPLUGGED PRO sizing runs small.