This is a gear set for V2/V3 made by RETRO ARMS.
The shaft diameter is Φ3mm and the gear ratio is 13:1 (13.65:1).
This product has four pre-cut piston openings.
It is a short stroke specification with 12 teeth.
No sintered parts are used, and all parts are made from machined steel and heat treated (around HRC50).
Use grease or oil that provides good metal-to-metal lubrication.
This is designed and tested by the manufacturer using pinion gears from ASG motors and WARHEAD motors.
In our compatibility tests, it was found to be compatible with the pinion of the HTG Mugen brushless motor.