Arrma INFRACTION 3s run on 4s? Some modifications, upgrades and my Opinion 

First impressions with the Arrma INFRACTION 3s run on 4s with stock motor 3900 kv, some modifications, installed 120 A ESC, Hoons tires (withe & silver), Centerbrace and Centerdrifeshaft, metal Spurgear, Frontsplitter & aeroplates, 40mm fans. Cut the Rearwing from the infraction down and lowered the chassis and set the shocks harder.
Change the ESC position. Test a 17 t Pinion, because the 20 t is too much on 4s. For Speedruns withe the infraction is 20 t ok (75 mph) but not good for bashing and drifting!
I use the 8400 mah 4s 120c lipo's from DXF.
AVC settings...
My opinion at the End of the Video!
Have lots of fun!
The Castlecombo Mamba x 1412 motor 3200 kv.
Test in the next Video!
All Mods:
spectrum 120 a ESC 4s
frontsplitter & aeroplates homemade
use a fuel hose to limited the suspension travel
metal spurgear with slipper eliminator
tower to tower brace from the kraton 4s shortened homemade
alu Center drifeshaft from RC AWD
installed 40mm fan's
cuted a hole in the body for more air
dboots HOONs belted tires white (medium nr. ara550095) and silver (hard nr. ara550096)
AVC set between 25 and 50% on throttel and 50% on steering