Quote:

The internal vanes determine rotor direction not the outside machined grooves. If the grooves on the outside are facing the same direction as the internal vanes, then that is your left or driver side rotor.




ignore the holes and slots that are machined into the rotor. the vanes inside can be in the same direction, they may not be. they may be straight vanes.

if the vanes in the middle are straight, then the rotors can go on either side.


http://zeckhausen.com/how_to_properly_install_rotors.htm


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