Hello!!
A cheap and beginner-friendly RC car
Upgraded Arrma Big Rock V3 from 3S to 4S.
Of course, 3S is enough, but I upgraded it to run more fun.
A more powerful driving is expected with the 4S change.
ESC, motor, shock and tire upgrades.
I tested it for a short time, speed and power are no joke.
I will upload an exciting driving video soon.

Arrma Big rock crew cab V3

-Part upgrade-
ESC : Hobbywing EZRUN MAX10 SCT 120A
Motor : Hobbywing EZRUN 3660SL G2 Brushless motor 3200KV
Tire : Pro-Line Racing AP10127-10 Badlands MX38 3.8" All Terrain Tires Mounted, AP6336 6x30 to 17mm Hex Adapters
Battery : DXF 8400mah 120c 4s
Gear : 32DP Motor Pinions Gear for 5mm shaft - 15T
Shock :  GPM Aluminum rear heavy-duty adjustable damper (front 102MM, rear 115MM)
Whee Nuts : Aluminum Wheel hubs 17mm Hex Nuts