Yeah Racing Harden Steel Portal Output Gear Set for Traxxas TRX-4/TRX6 Crawler ESC It features selectable BEC output

It features selectable BEC output voltages

0V nominal voltage once they get below half capacity (ie: your servos will be a lot more sluggish if your typical NiMH battery pack is below half capacity)

9mm and 1 to 2 spur gears (depending on spur thickness)

35V high-voltage allows higher energy density and longer battery life

you’ve found your match

Yeah Racing Harden Steel Portal Output Gear Set for Traxxas TRX-4/TRX6 Crawler ESC It features selectable BEC outputYeah Racing Traxxas TRX 4 TRX 6 Harden Steel Portal Output Gear Set. These optional steel output gears are great for increasing the durability in your Traxxas TRX 4 or TRX 6. Package includes two gears, two shafts and two pins. Features: Perfect fit for the Traxxas TRX 4 or TRX 6 Made from hardened steel to increase durability