Originally Posted by Flying Monkey

How are you guys gearing cyclone tc's? My son has a 109t spur and according to the fdr sheet I need a 66t pinion lol to get a 4.0 fdr. All the HB spurs are really high...think lowest I found was 104t. With it having a 2.4 internal im having a hard time finding a combo to get me at a 4.0 on his car.

Im also curious if I can use a spur from my tc5 in his cyclone.