For 2009 NS Bikes have created three different Sub-Catagories for their bikes, frames and components.
Trailmaster:
These are high-end light weight parts for Dirt Jumpers/trail riders. The general set-up consists of 26" wheels with a low travel fork. They are designed to be as light as possible, yet still strong enough for pro-level Dirt Jump.
Pro-street:
This groupset was designed to cater for the high-end, super-light-weight needs of destructive street riders. Generally 24" set-ups that need to be agile and light enough to throw around the most tech sections you can ride.
Fundamental:
This series indicates parts that offer great value for money. They are also designed for the bigger/heavier riders that tend to trash other brands far too easily. It also represents components for riders that are not dedicated to one branch of this sport.