Bought 2 sets of these shocktec kits from the states a year ago.
Kit consists of heavy metal cone, speed wheel, a new cone shaft, nice rip wheel, a longer anti jam spring.
With the kit having a speed wheel, and a heavier cone, i believe it put a lot more torque on the motor. It definately fed faster , as i did a drop test prior installing the kit, but not by much.
My experience with them , they seem to break fragile paint a lot more than a stock halo/reloader. Not sure wether it was the heavy metal cone, or the faster speed wheel