The NP205 is known as one of the toughest transfer cases ever made. Its cast iron construction and fully gear driven design make it nearly indestructible. There are no design flaws or weak points to worry about and the bearings and gears are built for real heavy duty work. The aftermarket support is incredible with twin stick kits adapters rebuild parts and upgrades available everywhere. It is simple strong and built to last a lifetime making it the gold standard for four wheel drive trucks and