I just installed a set of slotted rotors on my FC (Pics below, both of drivers side). I just naturally assumed that the sweep of the slot should be facing away from the front of the car. But now, looking over alot of other's posts about their brake kits and rotors, seems alot of people put them the other direction? Which way is correct??

 

The correct direction depends on the internal fins of the rotor. When the car is running you want those fins to pump air from the center of the rotor to the outer edge. The means for the driver side the fins should be twisted clockwise from inner to outer and on the passenger side they should be twisted counterclockwise.

 

Alright, Ill have to take a look. Thanks!

 

Damon is right, but I think the only time the slot direction will make a difference is when the vanes inside the rotors are curved/slanted. If they are curved/slanted, then the slots/ holes usually run the opposite direction.

 

In other words, it almost certainly doesn't matter for your rotors because I am pretty sure they have straight vanes.

-Max

 

Don't rotors usually have L and R stamped on them? My Powerslots did.