
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
Re-Buildable
- 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




