tmf2004

iTrader: (15)

Are RCA required to run LS400 BBK setup and all BBK like Rotora, brembo etc.. .. I thought that RCA were only for really lowered cars.. THanks

GSteg

iTrader: (15)

It's not required for the LS400 brakes. Alternatively, you can shave off a bit of the tie rods' threads. RCAs just happens to work if you dont' want to do any shaving. I don't ever recall anyone needed RCAs to fit other brakes setup though, just the LS400. In any case, i'm running 0.5" RCAs and the caliper barely clears.

tmf2004

iTrader: (15)

Thanks Henry.... So your 0.5'' lower.. I'm not sure why this is needed for the brakes

GSteg

iTrader: (15)

Because without it, the LS400 calipers will hit the tie rod bolt. When you add in RCAs, you're essentially adding more clearance.

PHML

iTrader: (33)

well...the RCA is also suppose to correct "suspension geometry" for lowered vehicles....which may be the reason for early lower ball joint problems.

GSteg

iTrader: (15)

Yup! The added clearance is just an added bonus for those who want LS400 calipers