yeah they are solid so would that mean tey are factory
if they are not vented rotors and are solid, they were not the upgraded fj60 rotors
factory stock vehicles had solid rotors.... the hilux trucks with solid axles were never available from the factory with anything else....
the upgrade you have heard about is something that someone not associated with toyota figured out and decided to do
you need ifs v6 calipers and fj60 rotors for that upgrade
