All New Vector K4 Brushless Motors!

The Vector K4 is the ideal brushless motor for every R/C driver. Whether offroad or onroad – the K4 is suitable for nearly all applications. It is available in five different windings, from 6.5T to 17.5T, and is fully re-buildable. The K4 includes many features of the successful Vector X-12 Stock-Spec competition motor, including the sensor positioning, oversized ball bearings, and HDS technology. The rotor is equipped with a 5mm sized shaft, which makes the K4 motor extremely robust. For weight reduction, the front part of the two-piece housing is made of heat-dissipating metal in a gun-metal look; while the rear part consists of high-quality synthetic material. LRP’s K4 brushless motors come with pre-soldered silicone flex wires with gold coated connectors.


High-Power sintered magnet

High-strength 12.45mm sintered magnet for maximum performance

HDS technology

High Density Stack for highest power output

Standard 540 specs

Standard 540 size and weight


Fully re-buildable for cleaning and tuning

PreciSensor System

Revolutionary precise sensor positioning for maximum power, great throttle response and high efficiency

Oversized ball bearings

Oversized ball bearings for highest performance and durability

Easy solder design

Heavy copper, multilayer PCB for lowest resistance



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