Electrifier Dual Shaft BO Motor 300 RPM 3V-12V with Wheels, Set of 4 | 0.35 kg cm rated torque, push-fit tyres, encoder disc support, ideal for line follower, obstacle avoider and STEM builds

Every classroom robot, line follower and DIY smart car starts with the same question: how do you make it move? This Electrifier combo answers it in one box, pairing four 300 RPM dual shaft BO motors with four matching tread tyres, so a complete 4WD platform, or two separate 2WD builds, can be assembled in a single sitting. Each motor operates across a wide 3V to 12V DC window, which means the same drive set works whether the build is powered by a four-cell AA pack, a 7.4V lithium battery or a bench supply, and it interfaces directly with common motor driver boards such as the L298N and L293D, ESP32 or Raspberry Pi Pico control. The geared reduction brings output speed to a rated 300 RPM while developing 0.35 kg cm of rated torque, with a no-load current draw of only 40 to 180 mA, light enough for battery-driven projects to run through a full demonstration without a recharge. The dual shaft layout is the practical differentiator here: the front 5.5 mm double D output push-fits straight into the wheel hub with no coupler needed, while the rear extension accepts a slotted encoder disc for speed measurement and closed-loop experiments as skills progress. At roughly 30 g and 7 x 2 x 2.5 cm per motor body, the set keeps the finished chassis light, which directly improves acceleration and battery runtime on small platforms. This combo suits school and college robotics assignments, ATL and tinkering lab inventories, hobby automation experiments and weekend maker builds where a spare drive set always earns its place. Every Electrifier component is sourced through ISO certified manufacturing and covered by a one-year warranty, so replacements and repeat orders arrive with consistent, predictable quality.