An essential upgrade to any chassis will be the installation of bearings. Most bearings come with a steel covering preventing dirt and such getting to the ball bearings inside however this increases the resistance of the bearing and hinders the ability for one to clean their bearings.
Teflon bearings come with a teflon shield that can be easily removed for ease of maintenance. Thus allowing for your bearings to not only be cleaner but to run with less resistance as the teflon shield is very adaptable.
An initial cleaning of these bearings is required as they arrive standard with a grease paste installed and this will cause resistance. Thus the yeah racing team suggested to clean them out. Conveniently a high speed bearing oil is supplied and makes the process easier.
A great product that will be taking seconds off your average lap times.