Electrifier Dual Shaft BO Motor 300 RPM 3V-12V with Wheels, Set of 2 | 0.35 kg cm rated torque, push-fit tyres, encoder disc support, complete drive pair for 2WD line follower and smart car builds

Most beginner and classroom robots run on exactly two driven wheels — a differential drive layout where one motor powers each side and a castor balances the chassis. This Electrifier combo supplies that complete drivetrain in one pack: two 300 RPM dual shaft BO motors with two matching tread tyres, ready to mount on any standard 2WD robot car chassis. Each motor operates across a wide 3V to 12V DC window, so the same pair works whether the build runs on 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 a battery-driven line follower to complete a full demonstration run without recharging. The dual shaft layout is the practical differentiator: 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 pair keeps the finished chassis light, which directly improves acceleration and battery runtime on small platforms. This pack suits school and college robotics assignments, ATL and tinkering lab inventories, single-project builds where a full four-motor kit is unnecessary, and as a matched replacement pair for an existing robot. 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.