Originally Posted by dpvu
You'll need the full-teeth version. Half-teeth are only required for special helical gear sets.
Half-tooth pistons are only required for half-tooth gear sets, which are of extremely high torque varieties.
- Systema Ultra Torque Up
- Systema Infinite Torque Up
- Prometheus MAX Torque.
These gear sets also happen to have helical teeth, but that is not the reason why you need a half tooth piston. There are plenty of other helical tooth gear sets that run fine with full-tooth pistons.