The infamous QS138 to this day has little to no competition in the electric power sports market. With its v-shaped embedded magnets and finned body that provide excellent heat dissipation, Its is hard to beat. The QS138 70H is well known around the world for its ability to produce power in a small form factor. A tried and true motor that packs a hefty punch for its size and weight. This is the sleekest version of the qs138 and is always an excellent choice. Electro & Company has paired this motor with an outstanding performer.  The all new EM-260 Controller that brings the power up to a astonishing 28kW Peak! This Combo is ideal for larger wheel motorcycles that need big bike power but in a form factor that will fit into the space constraints of your project. THE ELECTRO & COMPANY DIFFERENCE Our kits come pre-wired and pre-tuned for powersports applications with our specialty being competition motocross. You will save years on your life not stressing about the details of wiring and tuning your setup that will not come with proper instructions or documentation from overseas. Just plug in an E&C kit, apply power and go! We build you a custom braided harness complete with Waterproof connectors, Switches, Throttle & Controller that is pre-tuned with our proven EMX setup. Key Features  Convenient Mounting locations Light weight and small dimension compared to other motors of similar power outputs V configured rotor design allows for higher RPM with flux weakening High Torque suitable for high performance high load situations such as climbing and racing. No setup required with Electro & Companies tried and true plug and play service Display Options  Volt Meter (Included) - Handlebar mounted voltage meter that allows the rider to get an exact voltage reading at a glance. DKD Display (Optional) - Heads up display unit that shows the rider battery life, speed, amperage draw, mode selection & more. Motor Specifications Weight: 28lbs Diameter: 150mm (mounts not included) Length: 234mm Rated RPM: 4000 RPM with Flux: 6500+ Rated Power: 3kW continuous E&C Findings: 28kW bursts Controller Specifications EM-260s Length: 214mm Width: 134mm Height: 80mm Voltage: 40-90v Peak Amps: 350A Max Output: 28,000w (28kW) Kits purchased with battery come with 5a charger and matching controller leads. Standard motor rotation direction is counterclockwise, as for motorcycles with the chain on the left hand side. If you need a clockwise rotation direction please request when ordering.