Originally Posted by
Team Kamikaze
Spool is a tuning option and it's just a suggestion and yes it is smart to order extra parts like Front upper and lower arms, rear lower arms, Front knuckles, rear upright or just get the 804175 which I call it a crash pack, (it comes with all the mentioned arms knuckles and uprights) bumper and 804164 front body plate.
I would also get the front upper and lower bumper plates and wide foam bumper they work great and will save your arms