This is the Flux Scream 1/8 scale Brushless Motor from HPI.

FEATURES
Designed to be used with the HPI Flux Rage ESC
Machined aluminum case

INCLUDES
Flux Scream Brushless Motor with 12 AWG Leads and 6mm Male Bullet
Connectors

SPECIFICATIONS
Diameter: (42mm)
Length: (68mm) without shaft
Shaft Diameter: (5mm)
Shaft Length: (18.5mm)
Weight: 12.1oz (345g)
kV Rating: 1965kV