INJORA 22T/12T (OVERDRIVE 9%) Alloy Steel Helical Gears For 1/18 TRX4M Silicone Differential Oil The pack includes one 4-cell

The pack includes one 4-cell 6700mAh iD LiPo battery

The other end plugs directly into any Castle waterproof

(1) TQ transmitter

include detailed installation instructions

INJORA 22T/12T (OVERDRIVE 9%) Alloy Steel Helical Gears For 1/18 TRX4M Silicone Differential Oil The pack includes one 4-cellINJORA Overdrive Underdrive Alloy Steel Helical Gears for 1 18 TRX4M Suit For: 1 18 RC crawler TRX4M Note: Each axle requires 1 set of gears (a ring gear and a pinion gear). Overdrive the front(or underdrive the rear) will pull you faster in the front, it allows you to climb better and reduce rollover. Do not swap gears from different gear sets! They are different even if they have the same number of tooth. If you have some free play between gears,