[ClodMaxx]

a new rotor is only $35, and would be cheaper than the motor kit. when the 6.5 came out last summer, i had just purchased my 4400 system and called novak to see if they recommended the 6.5 motor, or just install the new rotor. they said the only things new were the rotor and the ribbed endbells to control heat, but that the endbells didn't really dissapate all that much. they recommended just installing the new rotor. it's pretty easy to install too, just make sure you grip it with pliers - hard - and slowly insert it. the magnetic pull is super strong, and could damage the sensor at the back of the can if it slips.

the sintered rotor does cut heat a lot, and the braking power is immense compared to the 4400. i didn't really notice much of speed boost though.