XERUN XR10 Justock G3 ESC, & Justock G2.1 Brushless Motor (10.5 Turn) – Combo. Designed for Stock Spec Racing, ICC, IOCC, USVTA, TOUR, Oval racing. Factory pre-installed Supercharged STOCK competition firmware. Blinky mode, Fixed timing brushless motor. JUSTOCK G3 ESC: 1pcs. JUSTOCK STOCK (G2.1) brushless motor: 1pcs. 5V cooling fan: 1pcs.