@joeman
yes it will work in your setups
and if you already have the batteries and charger your good to go
its probably just a typo
also are you planning on running 3s anyone
i run 3s in my slash with jaco foams and high gearing and im getting 65 and then it blows away lol
yes the castle sidewinder sct is lipo ready
and will work good with that motor
you might have a little more money to spend
higher kv = faster lower = tourque
so for the b4 i would run the one i showed up to a 5000
geared youll be going fast and also get up to that speed fast
i run that setup in a b44
4wd version
perfect