This is an R1 Wurks 020109, drag racing tuned 4.5T sensored brushless motor.

Advantage:

• 13mm x 5 mm high torque rotor installed
• Higher RPM and lower resistance winding compared to standard 4.5T
• Proprietary R1 stator
• Laminate material
• R1 V16 stators are designed using computer simulation technology
• Epoxy bonded end wind
• Ultra low resistance collector ring
• Improved punch & top end
• Low power load, high power output