Aluminium Idler - Do I need this

[GriMM]

It definitely is... the good thing about sensored brushless is low speed driveability, it has incredible torque - better then the integy lathe motors i was using before.

Then when you feel like hitting some jumps or ripping it up its got speed too... one of the problems i have though is without a sway bar system the whole rig twists up under heavy throttle and likes to roll