When evaluating 110cc pocket bikes, focus on the engine type (typically 4-stroke for better torque and reliability) and the cooling system (air-cooled is standard, but ensure heat dissipation fins are high-quality). Pay close attention to the frame construction, prioritizing high-tensile steel tubes with robotic welding to ensure structural integrity. Additionally, verify the braking system, where front and rear hydraulic disc brakes are preferred over mechanical ones for superior stopping power and safety.