Originally Posted by prodriver
Hi guys, d4 maxzilla 13.5. Changing the rotor to the works team one has anyone does this its a 12.5mm one. Also has anyone tried the 13mm rotor thanks?
I've tried 13mm rotors while running mod TC indoors - you'd see a significant torque increase over the 12.5 spec rotors, but re-gearing your car to take advantage of the extra low-end power is required. However, as previously mentioned, if you're running at a track that follows ROAR rules, the 13mm rotors aren't legal in spec classes.