Worker Metal Flywheel Cage
If you're looking for maximum performance and consistency from a flywheel system then metal cages are the way to go. Rigid enough to cope with high torque, high crush setups without flexing, you'll notice more consistent performance from a metal cage as well as noticably less noise and vibration.
Worker cages aren't engineered to quite as high precision as Dr. Snikkas or Heston System's cages, but are the absolute best value for medium to high powered flywheel systems.
The Worker cage is available in 42.5mm and 43.5mm crush